基于C#实现的定时数据库备份工具

DatabaseBackupTool/
├── Program.cs                 # 程序入口
├── MainForm.cs                # 主窗体
├── BackupService.cs           # 备份服务核心
├── BackupScheduler.cs         # 定时调度器
├── DatabaseBackup.cs          # 数据库备份基类
├── SqlServerBackup.cs         # SQL Server备份
├── MySqlBackup.cs            # MySQL备份
├── PostgreSqlBackup.cs       # PostgreSQL备份
├── OracleBackup.cs           # Oracle备份
├── EmailNotifier.cs          # 邮件通知
├── LogManager.cs             # 日志管理
├── ConfigManager.cs          # 配置管理
└── DatabaseBackupTool.csproj

<Project Sdk="Microsoft.NET.Sdk">
  <PropertyGroup>
    <OutputType>WinExe</OutputType>
    <TargetFramework>net6.0-windows</TargetFramework>
    <Nullable>enable</Nullable>
    <UseWindowsForms>true</UseWindowsForms>
  </PropertyGroup>
  <ItemGroup>
    <!-- 数据库驱动 -->
    <PackageReference Include="Microsoft.Data.SqlClient" Version="5.1.1" />
    <PackageReference Include="MySql.Data" Version="8.2.0" />
    <PackageReference Include="Npgsql" Version="7.0.4" />
    <PackageReference Include="Oracle.ManagedDataAccess.Core" Version="3.21.110" />
    <!-- Quartz.NET 定时任务 -->
    <PackageReference Include="Quartz" Version="3.7.0" />
    <PackageReference Include="Quartz.Extensions.Hosting" Version="3.7.0" />
    <!-- 其他工具 -->
    <PackageReference Include="MailKit" Version="4.3.0" />
    <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
  </ItemGroup>
</Project>

using System;
using System.Windows.Forms;

namespace DatabaseBackupTool
{
    internal static class Program
    {
        [STAThread]
        static void Main()
        {
            Application.EnableVisualStyles();
            Application.SetCompatibleTextRenderingDefault(false);
            
            // 初始化日志
            LogManager.Initialize();
            LogManager.Info("数据库备份工具启动");
            
            Application.Run(new MainForm());
        }
    }
}

using System;
using System.Collections.Generic;
using System.Drawing;
using System.IO;
using System.Windows.Forms;

namespace DatabaseBackupTool
{
    public partial class MainForm : Form
    {
        private BackupService backupService = new BackupService();
        private BackupScheduler scheduler = new BackupScheduler();
        private List<BackupTask> backupTasks = new List<BackupTask>();

        public MainForm()
        {
            InitializeComponent();
            LoadBackupTasks();
            UpdateTaskList();
        }

        private void LoadBackupTasks()
        {
            backupTasks = ConfigManager.LoadBackupTasks();
        }

        private void UpdateTaskList()
        {
            dgvTasks.Rows.Clear();
            foreach (var task in backupTasks)
            {
                dgvTasks.Rows.Add(
                    task.Name,
                    task.DatabaseType,
                    task.Server,
                    task.DatabaseName,
                    task.ScheduleType,
                    task.LastBackupTime.ToString("yyyy-MM-dd HH:mm"),
                    task.NextBackupTime.ToString("yyyy-MM-dd HH:mm"),
                    task.IsEnabled ? "启用" : "禁用"
                );
            }
        }

        private void btnAddTask_Click(object sender, EventArgs e)
        {
            BackupTaskForm taskForm = new BackupTaskForm();
            if (taskForm.ShowDialog() == DialogResult.OK)
            {
                var newTask = taskForm.BackupTask;
                backupTasks.Add(newTask);
                ConfigManager.SaveBackupTasks(backupTasks);
                UpdateTaskList();
                
                if (newTask.IsEnabled)
                {
                    scheduler.ScheduleTask(newTask);
                }
                
                LogManager.Info($"添加备份任务: {newTask.Name}");
            }
        }

        private void btnEditTask_Click(object sender, EventArgs e)
        {
            if (dgvTasks.SelectedRows.Count == 0)
            {
                MessageBox.Show("请选择要编辑的任务！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Warning);
                return;
            }

            int index = dgvTasks.SelectedRows[0].Index;
            var task = backupTasks[index];
            
            BackupTaskForm taskForm = new BackupTaskForm(task);
            if (taskForm.ShowDialog() == DialogResult.OK)
            {
                backupTasks[index] = taskForm.BackupTask;
                ConfigManager.SaveBackupTasks(backupTasks);
                UpdateTaskList();
                
                // 重新调度任务
                scheduler.RescheduleTask(backupTasks[index]);
                LogManager.Info($"更新备份任务: {task.Name}");
            }
        }

        private void btnDeleteTask_Click(object sender, EventArgs e)
        {
            if (dgvTasks.SelectedRows.Count == 0)
            {
                MessageBox.Show("请选择要删除的任务！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Warning);
                return;
            }

            int index = dgvTasks.SelectedRows[0].Index;
            var task = backupTasks[index];
            
            if (MessageBox.Show($"确定要删除任务 '{task.Name}' 吗？", "确认", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes)
            {
                backupTasks.RemoveAt(index);
                ConfigManager.SaveBackupTasks(backupTasks);
                UpdateTaskList();
                
                scheduler.UnscheduleTask(task.Id);
                LogManager.Info($"删除备份任务: {task.Name}");
            }
        }

        private void btnManualBackup_Click(object sender, EventArgs e)
        {
            if (dgvTasks.SelectedRows.Count == 0)
            {
                MessageBox.Show("请选择要执行的任务！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Warning);
                return;
            }

            int index = dgvTasks.SelectedRows[0].Index;
            var task = backupTasks[index];
            
            btnManualBackup.Enabled = false;
            lblStatus.Text = $"正在执行备份: {task.Name}";
            
            backupService.ExecuteBackup(task, (success, message) =>
            {
                btnManualBackup.Enabled = true;
                lblStatus.Text = message;
                
                if (success)
                {
                    LogManager.Info($"手动备份成功: {task.Name}");
                    MessageBox.Show("备份执行成功！", "完成", MessageBoxButtons.OK, MessageBoxIcon.Information);
                }
                else
                {
                    LogManager.Error($"手动备份失败: {task.Name} - {message}");
                    MessageBox.Show($"备份执行失败: {message}", "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
                }
                
                UpdateTaskList();
            });
        }

        private void btnTestConnection_Click(object sender, EventArgs e)
        {
            if (dgvTasks.SelectedRows.Count == 0)
            {
                MessageBox.Show("请选择要测试的任务！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Warning);
                return;
            }

            int index = dgvTasks.SelectedRows[0].Index;
            var task = backupTasks[index];
            
            lblStatus.Text = $"正在测试连接: {task.Name}";
            
            try
            {
                bool success = backupService.TestConnection(task);
                if (success)
                {
                    lblStatus.Text = "连接测试成功";
                    MessageBox.Show("数据库连接测试成功！", "成功", MessageBoxButtons.OK, MessageBoxIcon.Information);
                }
                else
                {
                    lblStatus.Text = "连接测试失败";
                    MessageBox.Show("数据库连接测试失败！", "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
                }
            }
            catch (Exception ex)
            {
                lblStatus.Text = $"连接测试异常: {ex.Message}";
                MessageBox.Show($"连接测试异常: {ex.Message}", "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }

        private void btnViewLogs_Click(object sender, EventArgs e)
        {
            LogViewerForm logForm = new LogViewerForm();
            logForm.ShowDialog();
        }

        private void btnCleanup_Click(object sender, EventArgs e)
        {
            CleanupForm cleanupForm = new CleanupForm(backupTasks);
            cleanupForm.ShowDialog();
        }

        private void timerStatus_Tick(object sender, EventArgs e)
        {
            // 更新任务状态
            foreach (var task in backupTasks)
            {
                task.NextBackupTime = scheduler.GetNextFireTime(task);
            }
            UpdateTaskList();
        }

        #region Windows Form Designer generated code

        private System.ComponentModel.IContainer components = null;
        private MenuStrip menuStrip1;
        private ToolStripMenuItem 文件ToolStripMenuItem;
        private ToolStripMenuItem 退出ToolStripMenuItem;
        private ToolStripMenuItem 工具ToolStripMenuItem;
        private ToolStripMenuItem 清理旧备份ToolStripMenuItem;
        private ToolStripMenuItem 查看日志ToolStripMenuItem;
        private ToolStripMenuItem 帮助ToolStripMenuItem;
        private ToolStripMenuItem 关于ToolStripMenuItem;
        private GroupBox groupBox1;
        private Button btnAddTask;
        private Button btnEditTask;
        private Button btnDeleteTask;
        private Button btnManualBackup;
        private Button btnTestConnection;
        private DataGridView dgvTasks;
        private GroupBox groupBox2;
        private Button btnViewLogs;
        private Button btnCleanup;
        private Label lblStatus;
        private Timer timerStatus;

        private void InitializeComponent()
        {
            this.components = new System.ComponentModel.Container();
            this.menuStrip1 = new System.Windows.Forms.MenuStrip();
            this.文件ToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();
            this.退出ToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();
            this.工具ToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();
            this.清理旧备份ToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();
            this.查看日志ToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();
            this.帮助ToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();
            this.关于ToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();
            this.groupBox1 = new System.Windows.Forms.GroupBox();
            this.btnTestConnection = new System.Windows.Forms.Button();
            this.btnManualBackup = new System.Windows.Forms.Button();
            this.btnDeleteTask = new System.Windows.Forms.Button();
            this.btnEditTask = new System.Windows.Forms.Button();
            this.btnAddTask = new System.Windows.Forms.Button();
            this.dgvTasks = new System.Windows.Forms.DataGridView();
            this.groupBox2 = new System.Windows.Forms.GroupBox();
            this.btnCleanup = new System.Windows.Forms.Button();
            this.btnViewLogs = new System.Windows.Forms.Button();
            this.lblStatus = new System.Windows.Forms.Label();
            this.timerStatus = new System.Windows.Forms.Timer(this.components);
            this.menuStrip1.SuspendLayout();
            this.groupBox1.SuspendLayout();
            ((System.ComponentModel.ISupportInitialize)(this.dgvTasks)).BeginInit();
            this.groupBox2.SuspendLayout();
            this.SuspendLayout();
            
            // menuStrip1
            this.menuStrip1.Items.AddRange(new System.Windows.Forms.ToolStripItem[] {
                this.文件ToolStripMenuItem,
                this.工具ToolStripMenuItem,
                this.帮助ToolStripMenuItem});
            this.menuStrip1.Location = new System.Drawing.Point(0, 0);
            this.menuStrip1.Name = "menuStrip1";
            this.menuStrip1.Size = new System.Drawing.Size(800, 25);
            this.menuStrip1.TabIndex = 0;
            this.menuStrip1.Text = "menuStrip1";
            
            // 文件ToolStripMenuItem
            this.文件ToolStripMenuItem.DropDownItems.AddRange(new System.Windows.Forms.ToolStripItem[] {
                this.退出ToolStripMenuItem});
            this.文件ToolStripMenuItem.Name = "文件ToolStripMenuItem";
            this.文件ToolStripMenuItem.Size = new System.Drawing.Size(44, 21);
            this.文件ToolStripMenuItem.Text = "文件";
            
            // 退出ToolStripMenuItem
            this.退出ToolStripMenuItem.Name = "退出ToolStripMenuItem";
            this.退出ToolStripMenuItem.Size = new System.Drawing.Size(93, 22);
            this.退出ToolStripMenuItem.Text = "退出";
            this.退出ToolStripMenuItem.Click += new System.EventHandler(this.退出ToolStripMenuItem_Click);
            
            // 工具ToolStripMenuItem
            this.工具ToolStripMenuItem.DropDownItems.AddRange(new System.Windows.Forms.ToolStripItem[] {
                this.清理旧备份ToolStripMenuItem,
                this.查看日志ToolStripMenuItem});
            this.工具ToolStripMenuItem.Name = "工具ToolStripMenuItem";
            this.工具ToolStripMenuItem.Size = new System.Drawing.Size(44, 21);
            this.工具ToolStripMenuItem.Text = "工具";
            
            // 清理旧备份ToolStripMenuItem
            this.清理旧备份ToolStripMenuItem.Name = "清理旧备份ToolStripMenuItem";
            this.清理旧备份ToolStripMenuItem.Size = new System.Drawing.Size(152, 22);
            this.清理旧备份ToolStripMenuItem.Text = "清理旧备份";
            this.清理旧备份ToolStripMenuItem.Click += new System.EventHandler(this.btnCleanup_Click);
            
            // 查看日志ToolStripMenuItem
            this.查看日志ToolStripMenuItem.Name = "查看日志ToolStripMenuItem";
            this.查看日志ToolStripMenuItem.Size = new System.Drawing.Size(152, 22);
            this.查看日志ToolStripMenuItem.Text = "查看日志";
            this.查看日志ToolStripMenuItem.Click += new System.EventHandler(this.btnViewLogs_Click);
            
            // 帮助ToolStripMenuItem
            this.帮助ToolStripMenuItem.DropDownItems.AddRange(new System.Windows.Forms.ToolStripItem[] {
                this.关于ToolStripMenuItem});
            this.帮助ToolStripMenuItem.Name = "帮助ToolStripMenuItem";
            this.帮助ToolStripMenuItem.Size = new System.Drawing.Size(44, 21);
            this.帮助ToolStripMenuItem.Text = "帮助";
            
            // 关于ToolStripMenuItem
            this.关于ToolStripMenuItem.Name = "关于ToolStripMenuItem";
            this.关于ToolStripMenuItem.Size = new System.Drawing.Size(107, 22);
            this.关于ToolStripMenuItem.Text = "关于";
            this.关于ToolStripMenuItem.Click += new System.EventHandler(this.关于ToolStripMenuItem_Click);
            
            // groupBox1
            this.groupBox1.Controls.Add(this.btnTestConnection);
            this.groupBox1.Controls.Add(this.btnManualBackup);
            this.groupBox1.Controls.Add(this.btnDeleteTask);
            this.groupBox1.Controls.Add(this.btnEditTask);
            this.groupBox1.Controls.Add(this.btnAddTask);
            this.groupBox1.Location = new System.Drawing.Point(12, 30);
            this.groupBox1.Name = "groupBox1";
            this.groupBox1.Size = new System.Drawing.Size(200, 150);
            this.groupBox1.TabIndex = 1;
            this.groupBox1.TabStop = false;
            this.groupBox1.Text = "任务管理";
            
            // btnTestConnection
            this.btnTestConnection.Location = new System.Drawing.Point(20, 115);
            this.btnTestConnection.Name = "btnTestConnection";
            this.btnTestConnection.Size = new System.Drawing.Size(160, 25);
            this.btnTestConnection.TabIndex = 4;
            this.btnTestConnection.Text = "测试连接";
            this.btnTestConnection.UseVisualStyleBackColor = true;
            this.btnTestConnection.Click += new System.EventHandler(this.btnTestConnection_Click);
            
            // btnManualBackup
            this.btnManualBackup.Location = new System.Drawing.Point(20, 85);
            this.btnManualBackup.Name = "btnManualBackup";
            this.btnManualBackup.Size = new System.Drawing.Size(160, 25);
            this.btnManualBackup.TabIndex = 3;
            this.btnManualBackup.Text = "立即备份";
            this.btnManualBackup.UseVisualStyleBackColor = true;
            this.btnManualBackup.Click += new System.EventHandler(this.btnManualBackup_Click);
            
            // btnDeleteTask
            this.btnDeleteTask.Location = new System.Drawing.Point(20, 55);
            this.btnDeleteTask.Name = "btnDeleteTask";
            this.btnDeleteTask.Size = new System.Drawing.Size(160, 25);
            this.btnDeleteTask.TabIndex = 2;
            this.btnDeleteTask.Text = "删除任务";
            this.btnDeleteTask.UseVisualStyleBackColor = true;
            this.btnDeleteTask.Click += new System.EventHandler(this.btnDeleteTask_Click);
            
            // btnEditTask
            this.btnEditTask.Location = new System.Drawing.Point(20, 30);
            this.btnEditTask.Name = "btnEditTask";
            this.btnEditTask.Size = new System.Drawing.Size(160, 25);
            this.btnEditTask.TabIndex = 1;
            this.btnEditTask.Text = "编辑任务";
            this.btnEditTask.UseVisualStyleBackColor = true;
            this.btnEditTask.Click += new System.EventHandler(this.btnEditTask_Click);
            
            // btnAddTask
            this.btnAddTask.Location = new System.Drawing.Point(20, 5);
            this.btnAddTask.Name = "btnAddTask";
            this.btnAddTask.Size = new System.Drawing.Size(160, 25);
            this.btnAddTask.TabIndex = 0;
            this.btnAddTask.Text = "添加任务";
            this.btnAddTask.UseVisualStyleBackColor = true;
            this.btnAddTask.Click += new System.EventHandler(this.btnAddTask_Click);
            
            // dgvTasks
            this.dgvTasks.AllowUserToAddRows = false;
            this.dgvTasks.AllowUserToDeleteRows = false;
            this.dgvTasks.ColumnHeadersHeightSizeMode = System.Windows.Forms.DataGridViewColumnHeadersHeightSizeMode.AutoSize;
            this.dgvTasks.Location = new System.Drawing.Point(220, 30);
            this.dgvTasks.Name = "dgvTasks";
            this.dgvTasks.ReadOnly = true;
            this.dgvTasks.RowHeadersWidth = 51;
            this.dgvTasks.RowTemplate.Height = 23;
            this.dgvTasks.Size = new System.Drawing.Size(568, 300);
            this.dgvTasks.TabIndex = 2;
            this.dgvTasks.Columns.AddRange(new System.Windows.Forms.DataGridViewColumn[]
            {
                new DataGridViewTextBoxColumn { HeaderText = "任务名称", Name = "Name", Width = 120 },
                new DataGridViewTextBoxColumn { HeaderText = "数据库类型", Name = "DatabaseType", Width = 80 },
                new DataGridViewTextBoxColumn { HeaderText = "服务器", Name = "Server", Width = 100 },
                new DataGridViewTextBoxColumn { HeaderText = "数据库", Name = "DatabaseName", Width = 100 },
                new DataGridViewTextBoxColumn { HeaderText = "计划", Name = "ScheduleType", Width = 80 },
                new DataGridViewTextBoxColumn { HeaderText = "上次备份", Name = "LastBackupTime", Width = 120 },
                new DataGridViewTextBoxColumn { HeaderText = "下次备份", Name = "NextBackupTime", Width = 120 },
                new DataGridViewTextBoxColumn { HeaderText = "状态", Name = "Status", Width = 60 }
            });
            
            // groupBox2
            this.groupBox2.Controls.Add(this.btnCleanup);
            this.groupBox2.Controls.Add(this.btnViewLogs);
            this.groupBox2.Location = new System.Drawing.Point(12, 190);
            this.groupBox2.Name = "groupBox2";
            this.groupBox2.Size = new System.Drawing.Size(200, 140);
            this.groupBox2.TabIndex = 3;
            this.groupBox2.TabStop = false;
            this.groupBox2.Text = "系统工具";
            
            // btnCleanup
            this.btnCleanup.Location = new System.Drawing.Point(20, 55);
            this.btnCleanup.Name = "btnCleanup";
            this.btnCleanup.Size = new System.Drawing.Size(160, 25);
            this.btnCleanup.TabIndex = 1;
            this.btnCleanup.Text = "清理旧备份";
            this.btnCleanup.UseVisualStyleBackColor = true;
            this.btnCleanup.Click += new System.EventHandler(this.btnCleanup_Click);
            
            // btnViewLogs
            this.btnViewLogs.Location = new System.Drawing.Point(20, 25);
            this.btnViewLogs.Name = "btnViewLogs";
            this.btnViewLogs.Size = new System.Drawing.Size(160, 25);
            this.btnViewLogs.TabIndex = 0;
            this.btnViewLogs.Text = "查看日志";
            this.btnViewLogs.UseVisualStyleBackColor = true;
            this.btnViewLogs.Click += new System.EventHandler(this.btnViewLogs_Click);
            
            // lblStatus
            this.lblStatus.AutoSize = true;
            this.lblStatus.Location = new System.Drawing.Point(220, 335);
            this.lblStatus.Name = "lblStatus";
            this.lblStatus.Size = new System.Drawing.Size(44, 13);
            this.lblStatus.TabIndex = 4;
            this.lblStatus.Text = "就绪...";
            
            // timerStatus
            this.timerStatus.Enabled = true;
            this.timerStatus.Interval = 60000; // 每分钟更新一次
            this.timerStatus.Tick += new System.EventHandler(this.timerStatus_Tick);
            
            // MainForm
            this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
            this.ClientSize = new System.Drawing.Size(800, 360);
            this.Controls.Add(this.lblStatus);
            this.Controls.Add(this.groupBox2);
            this.Controls.Add(this.dgvTasks);
            this.Controls.Add(this.groupBox1);
            this.Controls.Add(this.menuStrip1);
            this.MainMenuStrip = this.menuStrip1;
            this.Name = "MainForm";
            this.Text = "数据库定时备份工具";
            this.menuStrip1.ResumeLayout(false);
            this.menuStrip1.PerformLayout();
            this.groupBox1.ResumeLayout(false);
            ((System.ComponentModel.ISupportInitialize)(this.dgvTasks)).EndInit();
            this.groupBox2.ResumeLayout(false);
            this.ResumeLayout(false);
            this.PerformLayout();
        }

        private void 退出ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            Application.Exit();
        }

        private void 关于ToolStripMenuItem_Click(object sender, EventArgs e)
        {
            MessageBox.Show("数据库定时备份工具 v1.0\n\n支持SQL Server、MySQL、PostgreSQL、Oracle等数据库\n© 2024 版权所有", "关于", MessageBoxButtons.OK, MessageBoxIcon.Information);
        }

        #endregion
    }
}

using System;
using System.Windows.Forms;

namespace DatabaseBackupTool
{
    public partial class BackupTaskForm : Form
    {
        public BackupTask BackupTask { get; private set; }

        public BackupTaskForm(BackupTask existingTask = null)
        {
            InitializeComponent();
            
            if (existingTask != null)
            {
                BackupTask = existingTask;
                LoadTaskData();
            }
            else
            {
                BackupTask = new BackupTask();
                BackupTask.IsEnabled = true;
                BackupTask.ScheduleType = ScheduleType.Daily;
                BackupTask.BackupTime = new TimeSpan(2, 0, 0); // 默认凌晨2点
                BackupTask.RetentionDays = 30; // 默认保留30天
            }
        }

        private void LoadTaskData()
        {
            txtName.Text = BackupTask.Name;
            cmbDatabaseType.SelectedItem = BackupTask.DatabaseType;
            txtServer.Text = BackupTask.Server;
            txtPort.Text = BackupTask.Port.ToString();
            txtDatabase.Text = BackupTask.DatabaseName;
            txtUsername.Text = BackupTask.Username;
            txtPassword.Text = BackupTask.Password;
            txtBackupPath.Text = BackupTask.BackupPath;
            
            cmbScheduleType.SelectedItem = BackupTask.ScheduleType.ToString();
            dtpBackupTime.Value = DateTime.Today.Add(BackupTask.BackupTime);
            numRetentionDays.Value = BackupTask.RetentionDays;
            chkEnabled.Checked = BackupTask.IsEnabled;
            
            txtEmailRecipient.Text = BackupTask.EmailRecipient;
            chkSendEmail.Checked = BackupTask.SendEmailNotification;
        }

        private void btnOK_Click(object sender, EventArgs e)
        {
            if (ValidateInputs())
            {
                SaveTaskData();
                this.DialogResult = DialogResult.OK;
                this.Close();
            }
        }

        private bool ValidateInputs()
        {
            if (string.IsNullOrWhiteSpace(txtName.Text))
            {
                MessageBox.Show("请输入任务名称！", "验证", MessageBoxButtons.OK, MessageBoxIcon.Warning);
                txtName.Focus();
                return false;
            }

            if (string.IsNullOrWhiteSpace(txtServer.Text))
            {
                MessageBox.Show("请输入数据库服务器地址！", "验证", MessageBoxButtons.OK, MessageBoxIcon.Warning);
                txtServer.Focus();
                return false;
            }

            if (string.IsNullOrWhiteSpace(txtDatabase.Text))
            {
                MessageBox.Show("请输入数据库名称！", "验证", MessageBoxButtons.OK, MessageBoxIcon.Warning);
                txtDatabase.Focus();
                return false;
            }

            if (string.IsNullOrWhiteSpace(txtBackupPath.Text))
            {
                MessageBox.Show("请输入备份路径！", "验证", MessageBoxButtons.OK, MessageBoxIcon.Warning);
                txtBackupPath.Focus();
                return false;
            }

            return true;
        }

        private void SaveTaskData()
        {
            BackupTask.Name = txtName.Text;
            BackupTask.DatabaseType = cmbDatabaseType.SelectedItem.ToString();
            BackupTask.Server = txtServer.Text;
            BackupTask.Port = int.Parse(txtPort.Text);
            BackupTask.DatabaseName = txtDatabase.Text;
            BackupTask.Username = txtUsername.Text;
            BackupTask.Password = txtPassword.Text;
            BackupTask.BackupPath = txtBackupPath.Text;
            
            BackupTask.ScheduleType = (ScheduleType)Enum.Parse(typeof(ScheduleType), cmbScheduleType.SelectedItem.ToString());
            BackupTask.BackupTime = dtpBackupTime.Value.TimeOfDay;
            BackupTask.RetentionDays = (int)numRetentionDays.Value;
            BackupTask.IsEnabled = chkEnabled.Checked;
            
            BackupTask.EmailRecipient = txtEmailRecipient.Text;
            BackupTask.SendEmailNotification = chkSendEmail.Checked;
        }

        #region Windows Form Designer generated code

        private System.ComponentModel.IContainer components = null;
        private TextBox txtName;
        private Label label1;
        private ComboBox cmbDatabaseType;
        private Label label2;
        private TextBox txtServer;
        private Label label3;
        private TextBox txtPort;
        private Label label4;
        private TextBox txtDatabase;
        private Label label5;
        private TextBox txtUsername;
        private Label label6;
        private TextBox txtPassword;
        private Label label7;
        private TextBox txtBackupPath;
        private Button btnBrowsePath;
        private Label label8;
        private ComboBox cmbScheduleType;
        private Label label9;
        private DateTimePicker dtpBackupTime;
        private Label label10;
        private NumericUpDown numRetentionDays;
        private CheckBox chkEnabled;
        private GroupBox groupBox1;
        private TextBox txtEmailRecipient;
        private Label label11;
        private CheckBox chkSendEmail;
        private Button btnOK;
        private Button btnCancel;

        private void InitializeComponent()
        {
            this.components = new System.ComponentModel.Container();
            this.txtName = new System.Windows.Forms.TextBox();
            this.label1 = new System.Windows.Forms.Label();
            this.cmbDatabaseType = new System.Windows.Forms.ComboBox();
            this.label2 = new System.Windows.Forms.Label();
            this.txtServer = new System.Windows.Forms.TextBox();
            this.label3 = new System.Windows.Forms.Label();
            this.txtPort = new System.Windows.Forms.TextBox();
            this.label4 = new System.Windows.Forms.Label();
            this.txtDatabase = new System.Windows.Forms.TextBox();
            this.label5 = new System.Windows.Forms.Label();
            this.txtUsername = new System.Windows.Forms.TextBox();
            this.label6 = new System.Windows.Forms.Label();
            this.txtPassword = new System.Windows.Forms.TextBox();
            this.label7 = new System.Windows.Forms.Label();
            this.txtBackupPath = new System.Windows.Forms.TextBox();
            this.btnBrowsePath = new System.Windows.Forms.Button();
            this.label8 = new System.Windows.Forms.Label();
            this.cmbScheduleType = new System.Windows.Forms.ComboBox();
            this.label9 = new System.Windows.Forms.Label();
            this.dtpBackupTime = new System.Windows.Forms.DateTimePicker();
            this.label10 = new System.Windows.Forms.Label();
            this.numRetentionDays = new System.Windows.Forms.NumericUpDown();
            this.chkEnabled = new System.Windows.Forms.CheckBox();
            this.groupBox1 = new System.Windows.Forms.GroupBox();
            this.chkSendEmail = new System.Windows.Forms.CheckBox();
            this.txtEmailRecipient = new System.Windows.Forms.TextBox();
            this.label11 = new System.Windows.Forms.Label();
            this.btnOK = new System.Windows.Forms.Button();
            this.btnCancel = new System.Windows.Forms.Button();
            ((System.ComponentModel.ISupportInitialize)(this.numRetentionDays)).BeginInit();
            this.groupBox1.SuspendLayout();
            this.SuspendLayout();
            
            // txtName
            this.txtName.Location = new System.Drawing.Point(100, 20);
            this.txtName.Name = "txtName";
            this.txtName.Size = new System.Drawing.Size(250, 23);
            this.txtName.TabIndex = 0;
            
            // label1
            this.label1.AutoSize = true;
            this.label1.Location = new System.Drawing.Point(20, 23);
            this.label1.Name = "label1";
            this.label1.Size = new System.Drawing.Size(56, 13);
            this.label1.TabIndex = 1;
            this.label1.Text = "任务名称:";
            
            // cmbDatabaseType
            this.cmbDatabaseType.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
            this.cmbDatabaseType.FormattingEnabled = true;
            this.cmbDatabaseType.Items.AddRange(new object[] { "SQL Server", "MySQL", "PostgreSQL", "Oracle" });
            this.cmbDatabaseType.Location = new System.Drawing.Point(100, 50);
            this.cmbDatabaseType.Name = "cmbDatabaseType";
            this.cmbDatabaseType.Size = new System.Drawing.Size(250, 23);
            this.cmbDatabaseType.TabIndex = 2;
            this.cmbDatabaseType.SelectedIndex = 0;
            
            // label2
            this.label2.AutoSize = true;
            this.label2.Location = new System.Drawing.Point(20, 53);
            this.label2.Name = "label2";
            this.label2.Size = new System.Drawing.Size(56, 13);
            this.label2.TabIndex = 3;
            this.label2.Text = "数据库类型:";
            
            // txtServer
            this.txtServer.Location = new System.Drawing.Point(100, 80);
            this.txtServer.Name = "txtServer";
            this.txtServer.Size = new System.Drawing.Size(180, 23);
            this.txtServer.TabIndex = 3;
            this.txtServer.Text = "localhost";
            
            // label3
            this.label3.AutoSize = true;
            this.label3.Location = new System.Drawing.Point(20, 83);
            this.label3.Name = "label3";
            this.label3.Size = new System.Drawing.Size(56, 13);
            this.label3.TabIndex = 4;
            this.label3.Text = "服务器地址:";
            
            // txtPort
            this.txtPort.Location = new System.Drawing.Point(290, 80);
            this.txtPort.Name = "txtPort";
            this.txtPort.Size = new System.Drawing.Size(60, 23);
            this.txtPort.TabIndex = 4;
            this.txtPort.Text = "1433";
            
            // label4
            this.label4.AutoSize = true;
            this.label4.Location = new System.Drawing.Point(290, 63);
            this.label4.Name = "label4";
            this.label4.Size = new System.Drawing.Size(32, 13);
            this.label4.TabIndex = 5;
            this.label4.Text = "端口:";
            
            // txtDatabase
            this.txtDatabase.Location = new System.Drawing.Point(100, 110);
            this.txtDatabase.Name = "txtDatabase";
            this.txtDatabase.Size = new System.Drawing.Size(250, 23);
            this.txtDatabase.TabIndex = 5;
            
            // label5
            this.label5.AutoSize = true;
            this.label5.Location = new System.Drawing.Point(20, 113);
            this.label5.Name = "label5";
            this.label5.Size = new System.Drawing.Size(56, 13);
            this.label5.TabIndex = 6;
            this.label5.Text = "数据库名称:";
            
            // txtUsername
            this.txtUsername.Location = new System.Drawing.Point(100, 140);
            this.txtUsername.Name = "txtUsername";
            this.txtUsername.Size = new System.Drawing.Size(250, 23);
            this.txtUsername.TabIndex = 6;
            
            // label6
            this.label6.AutoSize = true;
            this.label6.Location = new System.Drawing.Point(20, 143);
            this.label6.Name = "label6";
            this.label6.Size = new System.Drawing.Size(56, 13);
            this.label6.TabIndex = 7;
            this.label6.Text = "用户名:";
            
            // txtPassword
            this.txtPassword.Location = new System.Drawing.Point(100, 170);
            this.txtPassword.Name = "txtPassword";
            this.txtPassword.PasswordChar = '*';
            this.txtPassword.Size = new System.Drawing.Size(250, 23);
            this.txtPassword.TabIndex = 7;
            
            // label7
            this.label7.AutoSize = true;
            this.label7.Location = new System.Drawing.Point(20, 173);
            this.label7.Name = "label7";
            this.label7.Size = new System.Drawing.Size(56, 13);
            this.label7.TabIndex = 8;
            this.label7.Text = "密码:";
            
            // txtBackupPath
            this.txtBackupPath.Location = new System.Drawing.Point(100, 200);
            this.txtBackupPath.Name = "txtBackupPath";
            this.txtBackupPath.Size = new System.Drawing.Size(250, 23);
            this.txtBackupPath.TabIndex = 8;
            
            // btnBrowsePath
            this.btnBrowsePath.Location = new System.Drawing.Point(355, 198);
            this.btnBrowsePath.Name = "btnBrowsePath";
            this.btnBrowsePath.Size = new System.Drawing.Size(25, 23);
            this.btnBrowsePath.TabIndex = 9;
            this.btnBrowsePath.Text = "...";
            this.btnBrowsePath.UseVisualStyleBackColor = true;
            this.btnBrowsePath.Click += new System.EventHandler(this.btnBrowsePath_Click);
            
            // label8
            this.label8.AutoSize = true;
            this.label8.Location = new System.Drawing.Point(20, 203);
            this.label8.Name = "label8";
            this.label8.Size = new System.Drawing.Size(56, 13);
            this.label8.TabIndex = 9;
            this.label8.Text = "备份路径:";
            
            // cmbScheduleType
            this.cmbScheduleType.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
            this.cmbScheduleType.FormattingEnabled = true;
            this.cmbScheduleType.Items.AddRange(new object[] { "Daily", "Weekly", "Monthly" });
            this.cmbScheduleType.Location = new System.Drawing.Point(100, 230);
            this.cmbScheduleType.Name = "cmbScheduleType";
            this.cmbScheduleType.Size = new System.Drawing.Size(120, 23);
            this.cmbScheduleType.TabIndex = 10;
            this.cmbScheduleType.SelectedIndex = 0;
            
            // label9
            this.label9.AutoSize = true;
            this.label9.Location = new System.Drawing.Point(20, 233);
            this.label9.Name = "label9";
            this.label9.Size = new System.Drawing.Size(56, 13);
            this.label9.TabIndex = 10;
            this.label9.Text = "备份计划:";
            
            // dtpBackupTime
            this.dtpBackupTime.Format = System.Windows.Forms.DateTimePickerFormat.Time;
            this.dtpBackupTime.Location = new System.Drawing.Point(230, 230);
            this.dtpBackupTime.Name = "dtpBackupTime";
            this.dtpBackupTime.Size = new System.Drawing.Size(120, 23);
            this.dtpBackupTime.TabIndex = 11;
            this.dtpBackupTime.Value = new System.DateTime(2024, 1, 1, 2, 0, 0, 0);
            
            // label10
            this.label10.AutoSize = true;
            this.label10.Location = new System.Drawing.Point(230, 213);
            this.label10.Name = "label10";
            this.label10.Size = new System.Drawing.Size(56, 13);
            this.label10.TabIndex = 11;
            this.label10.Text = "备份时间:";
            
            // numRetentionDays
            this.numRetentionDays.Location = new System.Drawing.Point(100, 260);
            this.numRetentionDays.Maximum = new decimal(new int[] { 365, 0, 0, 0 });
            this.numRetentionDays.Minimum = new decimal(new int[] { 1, 0, 0, 0 });
            this.numRetentionDays.Name = "numRetentionDays";
            this.numRetentionDays.Size = new System.Drawing.Size(120, 23);
            this.numRetentionDays.TabIndex = 12;
            this.numRetentionDays.Value = new decimal(new int[] { 30, 0, 0, 0 });
            
            // label11
            this.label11.AutoSize = true;
            this.label11.Location = new System.Drawing.Point(20, 263);
            this.label11.Name = "label11";
            this.label11.Size = new System.Drawing.Size(56, 13);
            this.label11.TabIndex = 12;
            this.label11.Text = "保留天数:";
            
            // chkEnabled
            this.chkEnabled.AutoSize = true;
            this.chkEnabled.Location = new System.Drawing.Point(230, 262);
            this.chkEnabled.Name = "chkEnabled";
            this.chkEnabled.Size = new System.Drawing.Size(48, 17);
            this.chkEnabled.TabIndex = 13;
            this.chkEnabled.Text = "启用";
            this.chkEnabled.UseVisualStyleBackColor = true;
            this.chkEnabled.Checked = true;
            
            // groupBox1
            this.groupBox1.Controls.Add(this.chkSendEmail);
            this.groupBox1.Controls.Add(this.txtEmailRecipient);
            this.groupBox1.Controls.Add(this.label11);
            this.groupBox1.Location = new System.Drawing.Point(20, 290);
            this.groupBox1.Name = "groupBox1";
            this.groupBox1.Size = new System.Drawing.Size(360, 80);
            this.groupBox1.TabIndex = 14;
            this.groupBox1.TabStop = false;
            this.groupBox1.Text = "邮件通知";
            
            // chkSendEmail
            this.chkSendEmail.AutoSize = true;
            this.chkSendEmail.Location = new System.Drawing.Point(20, 50);
            this.chkSendEmail.Name = "chkSendEmail";
            this.chkSendEmail.Size = new System.Drawing.Size(96, 17);
            this.chkSendEmail.TabIndex = 1;
            this.chkSendEmail.Text = "发送邮件通知";
            this.chkSendEmail.UseVisualStyleBackColor = true;
            
            // txtEmailRecipient
            this.txtEmailRecipient.Location = new System.Drawing.Point(20, 20);
            this.txtEmailRecipient.Name = "txtEmailRecipient";
            this.txtEmailRecipient.Size = new System.Drawing.Size(320, 23);
            this.txtEmailRecipient.TabIndex = 0;
            
            // label12
            this.label12.AutoSize = true;
            this.label12.Location = new System.Drawing.Point(20, 3);
            this.label12.Name = "label12";
            this.label12.Size = new System.Drawing.Size(56, 13);
            this.label12.TabIndex = 0;
            this.label12.Text = "收件人邮箱:";
            
            // btnOK
            this.btnOK.Location = new System.Drawing.Point(200, 380);
            this.btnOK.Name = "btnOK";
            this.btnOK.Size = new System.Drawing.Size(80, 30);
            this.btnOK.TabIndex = 15;
            this.btnOK.Text = "确定";
            this.btnOK.UseVisualStyleBackColor = true;
            this.btnOK.Click += new System.EventHandler(this.btnOK_Click);
            
            // btnCancel
            this.btnCancel.Location = new System.Drawing.Point(290, 380);
            this.btnCancel.Name = "btnCancel";
            this.btnCancel.Size = new System.Drawing.Size(80, 30);
            this.btnCancel.TabIndex = 16;
            this.btnCancel.Text = "取消";
            this.btnCancel.UseVisualStyleBackColor = true;
            this.btnCancel.Click += new System.EventHandler(this.btnCancel_Click);
            
            // BackupTaskForm
            this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
            this.ClientSize = new System.Drawing.Size(384, 422);
            this.Controls.Add(this.btnCancel);
            this.Controls.Add(this.btnOK);
            this.Controls.Add(this.groupBox1);
            this.Controls.Add(this.chkEnabled);
            this.Controls.Add(this.numRetentionDays);
            this.Controls.Add(this.dtpBackupTime);
            this.Controls.Add(this.cmbScheduleType);
            this.Controls.Add(this.txtBackupPath);
            this.Controls.Add(this.btnBrowsePath);
            this.Controls.Add(this.txtPassword);
            this.Controls.Add(this.txtUsername);
            this.Controls.Add(this.txtDatabase);
            this.Controls.Add(this.txtPort);
            this.Controls.Add(this.txtServer);
            this.Controls.Add(this.cmbDatabaseType);
            this.Controls.Add(this.txtName);
            this.Controls.Add(this.label10);
            this.Controls.Add(this.label9);
            this.Controls.Add(this.label8);
            this.Controls.Add(this.label7);
            this.Controls.Add(this.label6);
            this.Controls.Add(this.label5);
            this.Controls.Add(this.label4);
            this.Controls.Add(this.label3);
            this.Controls.Add(this.label2);
            this.Controls.Add(this.label1);
            this.Name = "BackupTaskForm";
            this.Text = "备份任务配置";
            ((System.ComponentModel.ISupportInitialize)(this.numRetentionDays)).EndInit();
            this.groupBox1.ResumeLayout(false);
            this.groupBox1.PerformLayout();
            this.ResumeLayout(false);
            this.PerformLayout();
        }

        private void btnBrowsePath_Click(object sender, EventArgs e)
        {
            FolderBrowserDialog folderDialog = new FolderBrowserDialog();
            folderDialog.Description = "选择备份文件保存路径";
            
            if (folderDialog.ShowDialog() == DialogResult.OK)
            {
                txtBackupPath.Text = folderDialog.SelectedPath;
            }
        }

        private void btnCancel_Click(object sender, EventArgs e)
        {
            this.DialogResult = DialogResult.Cancel;
            this.Close();
        }

        #endregion
    }
}

using System;

namespace DatabaseBackupTool
{
    /// <summary>
    /// 备份任务模型
    /// </summary>
    public class BackupTask
    {
        public Guid Id { get; set; } = Guid.NewGuid();
        public string Name { get; set; } = "";
        public string DatabaseType { get; set; } = "SQL Server";
        public string Server { get; set; } = "localhost";
        public int Port { get; set; } = 1433;
        public string DatabaseName { get; set; } = "";
        public string Username { get; set; } = "";
        public string Password { get; set; } = "";
        public string BackupPath { get; set; } = "";
        
        public ScheduleType ScheduleType { get; set; } = ScheduleType.Daily;
        public TimeSpan BackupTime { get; set; } = new TimeSpan(2, 0, 0);
        public int RetentionDays { get; set; } = 30;
        public bool IsEnabled { get; set; } = true;
        
        public string EmailRecipient { get; set; } = "";
        public bool SendEmailNotification { get; set; } = false;
        
        public DateTime LastBackupTime { get; set; } = DateTime.MinValue;
        public DateTime NextBackupTime { get; set; } = DateTime.MinValue;
        public DateTime CreatedTime { get; set; } = DateTime.Now;
        public DateTime ModifiedTime { get; set; } = DateTime.Now;
    }

    /// <summary>
    /// 备份计划类型
    /// </summary>
    public enum ScheduleType
    {
        Daily,      // 每天
        Weekly,     // 每周
        Monthly     // 每月
    }

    /// <summary>
    /// 备份结果
    /// </summary>
    public class BackupResult
    {
        public bool Success { get; set; }
        public string Message { get; set; } = "";
        public string BackupFilePath { get; set; } = "";
        public long BackupSize { get; set; } = 0;
        public TimeSpan Duration { get; set; } = TimeSpan.Zero;
        public DateTime StartTime { get; set; } = DateTime.Now;
        public DateTime EndTime { get; set; } = DateTime.Now;
    }
}

using System;
using System.Diagnostics;
using System.IO;
using System.Threading.Tasks;

namespace DatabaseBackupTool
{
    /// <summary>
    /// 备份服务核心
    /// </summary>
    public class BackupService
    {
        private DatabaseBackup databaseBackup;

        /// <summary>
        /// 执行备份
        /// </summary>
        public void ExecuteBackup(BackupTask task, Action<bool, string> callback)
        {
            Task.Run(() =>
            {
                try
                {
                    LogManager.Info($"开始执行备份任务: {task.Name}");
                    
                    // 创建备份目录
                    if (!Directory.Exists(task.BackupPath))
                    {
                        Directory.CreateDirectory(task.BackupPath);
                    }

                    // 获取数据库备份实例
                    databaseBackup = GetDatabaseBackup(task.DatabaseType);
                    
                    // 执行备份
                    var result = databaseBackup.Backup(task);
                    
                    // 更新任务状态
                    task.LastBackupTime = DateTime.Now;
                    task.NextBackupTime = CalculateNextBackupTime(task);
                    task.ModifiedTime = DateTime.Now;

                    // 发送邮件通知
                    if (task.SendEmailNotification && !string.IsNullOrEmpty(task.EmailRecipient))
                    {
                        SendEmailNotification(task, result);
                    }

                    // 清理旧备份
                    CleanupOldBackups(task);

                    LogManager.Info($"备份任务完成: {task.Name} - {(result.Success ? "成功" : "失败")}");
                    callback(result.Success, result.Message);
                }
                catch (Exception ex)
                {
                    LogManager.Error($"备份任务异常: {task.Name} - {ex.Message}");
                    callback(false, $"备份异常: {ex.Message}");
                }
            });
        }

        /// <summary>
        /// 测试数据库连接
        /// </summary>
        public bool TestConnection(BackupTask task)
        {
            try
            {
                databaseBackup = GetDatabaseBackup(task.DatabaseType);
                return databaseBackup.TestConnection(task);
            }
            catch (Exception ex)
            {
                LogManager.Error($"连接测试失败: {task.Name} - {ex.Message}");
                return false;
            }
        }

        /// <summary>
        /// 获取数据库备份实例
        /// </summary>
        private DatabaseBackup GetDatabaseBackup(string databaseType)
        {
            return databaseType switch
            {
                "SQL Server" => new SqlServerBackup(),
                "MySQL" => new MySqlBackup(),
                "PostgreSQL" => new PostgreSqlBackup(),
                "Oracle" => new OracleBackup(),
                _ => throw new NotSupportedException($"不支持的数据库类型: {databaseType}")
            };
        }

        /// <summary>
        /// 计算下次备份时间
        /// </summary>
        private DateTime CalculateNextBackupTime(BackupTask task)
        {
            DateTime now = DateTime.Now;
            DateTime todayBackupTime = now.Date.Add(task.BackupTime);

            return task.ScheduleType switch
            {
                ScheduleType.Daily => todayBackupTime <= now ? todayBackupTime.AddDays(1) : todayBackupTime,
                ScheduleType.Weekly => CalculateNextWeeklyBackup(now, task.BackupTime),
                ScheduleType.Monthly => CalculateNextMonthlyBackup(now, task.BackupTime),
                _ => todayBackupTime.AddDays(1)
            };
        }

        private DateTime CalculateNextWeeklyBackup(DateTime now, TimeSpan backupTime)
        {
            DateTime nextBackup = now.Date.Add(backupTime);
            while (nextBackup <= now || nextBackup.DayOfWeek != DayOfWeek.Sunday)
            {
                nextBackup = nextBackup.AddDays(1);
            }
            return nextBackup;
        }

        private DateTime CalculateNextMonthlyBackup(DateTime now, TimeSpan backupTime)
        {
            DateTime nextBackup = new DateTime(now.Year, now.Month, 1).Add(backupTime);
            if (nextBackup <= now)
            {
                nextBackup = nextBackup.AddMonths(1);
            }
            return nextBackup;
        }

        /// <summary>
        /// 清理旧备份
        /// </summary>
        private void CleanupOldBackups(BackupTask task)
        {
            try
            {
                if (task.RetentionDays <= 0) return;

                string[] backupFiles = Directory.GetFiles(task.BackupPath, $"{task.DatabaseName}_*.bak");
                DateTime cutoffDate = DateTime.Now.AddDays(-task.RetentionDays);

                foreach (string file in backupFiles)
                {
                    FileInfo fileInfo = new FileInfo(file);
                    if (fileInfo.CreationTime < cutoffDate)
                    {
                        File.Delete(file);
                        LogManager.Info($"删除旧备份文件: {file}");
                    }
                }
            }
            catch (Exception ex)
            {
                LogManager.Error($"清理旧备份失败: {task.Name} - {ex.Message}");
            }
        }

        /// <summary>
        /// 发送邮件通知
        /// </summary>
        private void SendEmailNotification(BackupTask task, BackupResult result)
        {
            try
            {
                EmailNotifier notifier = new EmailNotifier();
                string subject = $"数据库备份通知 - {task.Name}";
                string body = $@"
                    备份任务: {task.Name}<br/>
                    数据库: {task.DatabaseName}<br/>
                    服务器: {task.Server}<br/>
                    结果: {(result.Success ? "成功" : "失败")}<br/>
                    消息: {result.Message}<br/>
                    备份文件: {result.BackupFilePath}<br/>
                    文件大小: {result.BackupSize / 1024.0 / 1024.0:F2} MB<br/>
                    耗时: {result.Duration.TotalMinutes:F2} 分钟<br/>
                    开始时间: {result.StartTime:yyyy-MM-dd HH:mm:ss}<br/>
                    结束时间: {result.EndTime:yyyy-MM-dd HH:mm:ss}
                ";

                notifier.SendEmail(task.EmailRecipient, subject, body);
                LogManager.Info($"邮件通知已发送到: {task.EmailRecipient}");
            }
            catch (Exception ex)
            {
                LogManager.Error($"发送邮件通知失败: {task.Name} - {ex.Message}");
            }
        }
    }
}

using System;
using System.Diagnostics;
using System.IO;

namespace DatabaseBackupTool
{
    /// <summary>
    /// 数据库备份基类
    /// </summary>
    public abstract class DatabaseBackup
    {
        /// <summary>
        /// 执行备份
        /// </summary>
        public abstract BackupResult Backup(BackupTask task);

        /// <summary>
        /// 测试连接
        /// </summary>
        public abstract bool TestConnection(BackupTask task);

        /// <summary>
        /// 生成备份文件名
        /// </summary>
        protected string GenerateBackupFileName(string databaseName)
        {
            string timestamp = DateTime.Now.ToString("yyyyMMdd_HHmmss");
            return $"{databaseName}_{timestamp}.bak";
        }

        /// <summary>
        /// 执行命令行工具
        /// </summary>
        protected BackupResult ExecuteCommand(string command, string arguments, string workingDirectory = "")
        {
            var result = new BackupResult();
            var stopwatch = Stopwatch.StartNew();

            try
            {
                ProcessStartInfo psi = new ProcessStartInfo
                {
                    FileName = command,
                    Arguments = arguments,
                    UseShellExecute = false,
                    RedirectStandardOutput = true,
                    RedirectStandardError = true,
                    CreateNoWindow = true,
                    WorkingDirectory = workingDirectory
                };

                using Process process = Process.Start(psi);
                if (process == null)
                {
                    result.Success = false;
                    result.Message = "无法启动进程";
                    return result;
                }

                string output = process.StandardOutput.ReadToEnd();
                string error = process.StandardError.ReadToEnd();
                
                process.WaitForExit();

                stopwatch.Stop();
                result.Duration = stopwatch.Elapsed;
                result.EndTime = DateTime.Now;

                if (process.ExitCode == 0)
                {
                    result.Success = true;
                    result.Message = "备份成功";
                    result.BackupFilePath = output.Trim();
                }
                else
                {
                    result.Success = false;
                    result.Message = $"备份失败: {error}";
                }
            }
            catch (Exception ex)
            {
                stopwatch.Stop();
                result.Success = false;
                result.Message = $"执行命令异常: {ex.Message}";
                result.Duration = stopwatch.Elapsed;
            }

            return result;
        }

        /// <summary>
        /// 获取文件大小
        /// </summary>
        protected long GetFileSize(string filePath)
        {
            if (File.Exists(filePath))
            {
                FileInfo fileInfo = new FileInfo(filePath);
                return fileInfo.Length;
            }
            return 0;
        }
    }
}

using System;
using System.Data;
using Microsoft.Data.SqlClient;

namespace DatabaseBackupTool
{
    /// <summary>
    /// SQL Server 备份实现
    /// </summary>
    public class SqlServerBackup : DatabaseBackup
    {
        public override BackupResult Backup(BackupTask task)
        {
            var result = new BackupResult { StartTime = DateTime.Now };

            try
            {
                string backupFileName = GenerateBackupFileName(task.DatabaseName);
                string backupFilePath = Path.Combine(task.BackupPath, backupFileName);

                string connectionString = BuildConnectionString(task);
                
                using var connection = new SqlConnection(connectionString);
                connection.Open();

                // 构建备份SQL
                string backupSql = $@"
                    BACKUP DATABASE [{task.DatabaseName}]
                    TO DISK = @BackupPath
                    WITH FORMAT, INIT, NAME = @BackupName, SKIP, NOREWIND, NOUNLOAD, STATS = 10
                ";

                using var command = new SqlCommand(backupSql, connection);
                command.Parameters.AddWithValue("@BackupPath", backupFilePath);
                command.Parameters.AddWithValue("@BackupName", $"{task.DatabaseName} Full Backup");
                
                command.CommandTimeout = 3600; // 1小时超时
                command.ExecuteNonQuery();

                result.Success = true;
                result.Message = "SQL Server 备份成功";
                result.BackupFilePath = backupFilePath;
                result.BackupSize = GetFileSize(backupFilePath);
                result.EndTime = DateTime.Now;

                LogManager.Info($"SQL Server 备份完成: {backupFilePath}");
            }
            catch (Exception ex)
            {
                result.Success = false;
                result.Message = $"SQL Server 备份失败: {ex.Message}";
                result.EndTime = DateTime.Now;
                LogManager.Error($"SQL Server 备份失败: {ex.Message}");
            }

            return result;
        }

        public override bool TestConnection(BackupTask task)
        {
            try
            {
                string connectionString = BuildConnectionString(task);
                using var connection = new SqlConnection(connectionString);
                connection.Open();
                return true;
            }
            catch (Exception ex)
            {
                LogManager.Error($"SQL Server 连接测试失败: {ex.Message}");
                return false;
            }
        }

        private string BuildConnectionString(BackupTask task)
        {
            if (string.IsNullOrEmpty(task.Username))
            {
                return $"Server={task.Server},{task.Port};Database=master;Integrated Security=True;TrustServerCertificate=True;";
            }
            else
            {
                return $"Server={task.Server},{task.Port};Database=master;User ID={task.Username};Password={task.Password};TrustServerCertificate=True;";
            }
        }
    }
}

using System;
using System.Diagnostics;
using System.IO;

namespace DatabaseBackupTool
{
    /// <summary>
    /// MySQL 备份实现
    /// </summary>
    public class MySqlBackup : DatabaseBackup
    {
        public override BackupResult Backup(BackupTask task)
        {
            var result = new BackupResult { StartTime = DateTime.Now };

            try
            {
                string backupFileName = GenerateBackupFileName(task.DatabaseName);
                string backupFilePath = Path.Combine(task.BackupPath, backupFileName);

                // 构建 mysqldump 命令
                string arguments = $"-h{task.Server} -P{task.Port} -u{task.Username} -p{task.Password} " +
                                 $"--single-transaction --routines --triggers --events " +
                                 $"--databases {task.DatabaseName} > \"{backupFilePath}\"";

                // 执行 mysqldump
                result = ExecuteCommand("mysqldump", arguments);
                result.StartTime = DateTime.Now;

                if (result.Success)
                {
                    result.BackupFilePath = backupFilePath;
                    result.BackupSize = GetFileSize(backupFilePath);
                    LogManager.Info($"MySQL 备份完成: {backupFilePath}");
                }
                else
                {
                    LogManager.Error($"MySQL 备份失败: {result.Message}");
                }
            }
            catch (Exception ex)
            {
                result.Success = false;
                result.Message = $"MySQL 备份异常: {ex.Message}";
                LogManager.Error($"MySQL 备份异常: {ex.Message}");
            }

            result.EndTime = DateTime.Now;
            return result;
        }

        public override bool TestConnection(BackupTask task)
        {
            try
            {
                using var connection = new MySql.Data.MySqlClient.MySqlConnection(BuildConnectionString(task));
                connection.Open();
                return true;
            }
            catch (Exception ex)
            {
                LogManager.Error($"MySQL 连接测试失败: {ex.Message}");
                return false;
            }
        }

        private string BuildConnectionString(BackupTask task)
        {
            return $"server={task.Server};port={task.Port};database={task.DatabaseName};uid={task.Username};pwd={task.Password};";
        }
    }
}

using System;
using System.Collections.Generic;
using Quartz;
using Quartz.Impl;

namespace DatabaseBackupTool
{
    /// <summary>
    /// 备份定时调度器
    /// </summary>
    public class BackupScheduler
    {
        private IScheduler scheduler;
        private Dictionary<Guid, JobKey> jobKeys = new Dictionary<Guid, JobKey>();

        public async void Initialize()
        {
            try
            {
                // 创建调度器工厂
                StdSchedulerFactory factory = new StdSchedulerFactory();
                scheduler = await factory.GetScheduler();
                await scheduler.Start();
                
                LogManager.Info("定时调度器启动成功");
            }
            catch (Exception ex)
            {
                LogManager.Error($"定时调度器启动失败: {ex.Message}");
            }
        }

        public async void ScheduleTask(BackupTask task)
        {
            if (!task.IsEnabled) return;

            try
            {
                // 创建作业
                IJobDetail job = JobBuilder.Create<BackupJob>()
                    .WithIdentity($"Job_{task.Id}", "BackupJobs")
                    .UsingJobData("TaskId", task.Id.ToString())
                    .Build();

                // 创建触发器
                ITrigger trigger = CreateTrigger(task);

                // 调度作业
                await scheduler.ScheduleJob(job, trigger);
                jobKeys[task.Id] = job.Key;

                LogManager.Info($"任务已调度: {task.Name}");
            }
            catch (Exception ex)
            {
                LogManager.Error($"调度任务失败: {task.Name} - {ex.Message}");
            }
        }

        public async void RescheduleTask(BackupTask task)
        {
            // 先取消原有调度
            UnscheduleTask(task.Id);
            
            // 重新调度
            if (task.IsEnabled)
            {
                ScheduleTask(task);
            }
        }

        public async void UnscheduleTask(Guid taskId)
        {
            if (jobKeys.ContainsKey(taskId))
            {
                await scheduler.DeleteJob(jobKeys[taskId]);
                jobKeys.Remove(taskId);
                LogManager.Info($"任务已取消调度: {taskId}");
            }
        }

        private ITrigger CreateTrigger(BackupTask task)
        {
            string cronExpression = GetCronExpression(task);
            
            return TriggerBuilder.Create()
                .WithIdentity($"Trigger_{task.Id}", "BackupTriggers")
                .WithCronSchedule(cronExpression)
                .Build();
        }

        private string GetCronExpression(BackupTask task)
        {
            int hour = task.BackupTime.Hours;
            int minute = task.BackupTime.Minutes;
            int second = task.BackupTime.Seconds;

            return task.ScheduleType switch
            {
                ScheduleType.Daily => $"{second} {minute} {hour} * * ?",
                ScheduleType.Weekly => $"{second} {minute} {hour} ? * SUN",
                ScheduleType.Monthly => $"{second} {minute} {hour} 1 * ?",
                _ => $"{second} {minute} {hour} * * ?"
            };
        }

        public DateTime GetNextFireTime(BackupTask task)
        {
            if (!task.IsEnabled) return DateTime.MinValue;

            string cronExpression = GetCronExpression(task);
            var cron = new Quartz.CronExpression(cronExpression);
            return cron.GetNextValidTimeAfter(DateTime.Now) ?? DateTime.MinValue;
        }

        public async void Shutdown()
        {
            if (scheduler != null)
            {
                await scheduler.Shutdown();
                LogManager.Info("定时调度器已关闭");
            }
        }
    }

    /// <summary>
    /// 备份作业
    /// </summary>
    public class BackupJob : IJob
    {
        public async Task Execute(IJobExecutionContext context)
        {
            var jobData = context.JobDetail.JobDataMap;
            string taskIdStr = jobData.GetString("TaskId");
            
            if (Guid.TryParse(taskIdStr, out Guid taskId))
            {
                // 从配置中获取任务
                var tasks = ConfigManager.LoadBackupTasks();
                var task = tasks.Find(t => t.Id == taskId);
                
                if (task != null && task.IsEnabled)
                {
                    var backupService = new BackupService();
                    backupService.ExecuteBackup(task, (success, message) =>
                    {
                        LogManager.Info($"定时备份完成: {task.Name} - {message}");
                    });
                }
            }
            
            await Task.CompletedTask;
        }
    }
}

using System;
using MailKit.Net.Smtp;
using MimeKit;
using MimeKit.Text;

namespace DatabaseBackupTool
{
    /// <summary>
    /// 邮件通知
    /// </summary>
    public class EmailNotifier
    {
        private readonly string smtpServer = "smtp.gmail.com"; // 配置您的SMTP服务器
        private readonly int smtpPort = 587;
        private readonly string smtpUsername = "your-email@gmail.com"; // 配置您的邮箱
        private readonly string smtpPassword = "your-password"; // 配置您的密码

        public void SendEmail(string recipient, string subject, string body)
        {
            try
            {
                var message = new MimeMessage();
                message.From.Add(new MailboxAddress("数据库备份系统", smtpUsername));
                message.To.Add(new MailboxAddress("", recipient));
                message.Subject = subject;
                message.Body = new TextPart(TextFormat.Html) { Text = body };

                using var client = new SmtpClient();
                client.Connect(smtpServer, smtpPort, MailKit.Security.SecureSocketOptions.StartTls);
                client.Authenticate(smtpUsername, smtpPassword);
                client.Send(message);
                client.Disconnect(true);
            }
            catch (Exception ex)
            {
                LogManager.Error($"发送邮件失败: {ex.Message}");
                throw;
            }
        }
    }
}

using System;
using System.IO;

namespace DatabaseBackupTool
{
    /// <summary>
    /// 日志管理
    /// </summary>
    public static class LogManager
    {
        private static string logFilePath = "logs/backup.log";
        private static object lockObject = new object();

        public static void Initialize()
        {
            string logDir = Path.GetDirectoryName(logFilePath);
            if (!string.IsNullOrEmpty(logDir) && !Directory.Exists(logDir))
            {
                Directory.CreateDirectory(logDir);
            }
        }

        public static void Info(string message)
        {
            WriteLog("INFO", message);
        }

        public static void Warning(string message)
        {
            WriteLog("WARNING", message);
        }

        public static void Error(string message)
        {
            WriteLog("ERROR", message);
        }

        private static void WriteLog(string level, string message)
        {
            try
            {
                string logMessage = $"{DateTime.Now:yyyy-MM-dd HH:mm:ss} [{level}] {message}";
                
                lock (lockObject)
                {
                    File.AppendAllText(logFilePath, logMessage + Environment.NewLine);
                }
            }
            catch
            {
                // 忽略日志写入错误
            }
        }

        public static string[] ReadLogs(int count = 100)
        {
            try
            {
                if (File.Exists(logFilePath))
                {
                    var lines = File.ReadAllLines(logFilePath);
                    if (lines.Length > count)
                    {
                        return lines[^count..];
                    }
                    return lines;
                }
            }
            catch
            {
                // 忽略错误
            }
            
            return Array.Empty<string>();
        }
    }
}

using System;
using System.Collections.Generic;
using System.IO;
using Newtonsoft.Json;

namespace DatabaseBackupTool
{
    /// <summary>
    /// 配置管理
    /// </summary>
    public static class ConfigManager
    {
        private static string configFilePath = "config/backup_tasks.json";

        public static List<BackupTask> LoadBackupTasks()
        {
            try
            {
                if (File.Exists(configFilePath))
                {
                    string json = File.ReadAllText(configFilePath);
                    return JsonConvert.DeserializeObject<List<BackupTask>>(json) ?? new List<BackupTask>();
                }
            }
            catch (Exception ex)
            {
                LogManager.Error($"加载配置失败: {ex.Message}");
            }
            
            return new List<BackupTask>();
        }

        public static void SaveBackupTasks(List<BackupTask> tasks)
        {
            try
            {
                string configDir = Path.GetDirectoryName(configFilePath);
                if (!string.IsNullOrEmpty(configDir) && !Directory.Exists(configDir))
                {
                    Directory.CreateDirectory(configDir);
                }

                string json = JsonConvert.SerializeObject(tasks, Formatting.Indented);
                File.WriteAllText(configFilePath, json);
                
                LogManager.Info("备份任务配置已保存");
            }
            catch (Exception ex)
            {
                LogManager.Error($"保存配置失败: {ex.Message}");
            }
        }
    }
}

using System;
using System.Windows.Forms;

namespace DatabaseBackupTool
{
    public partial class LogViewerForm : Form
    {
        public LogViewerForm()
        {
            InitializeComponent();
            LoadLogs();
        }

        private void LoadLogs()
        {
            string[] logs = LogManager.ReadLogs(200);
            txtLogs.Lines = logs;
            txtLogs.SelectionStart = txtLogs.Text.Length;
            txtLogs.ScrollToCaret();
        }

        #region Windows Form Designer generated code

        private System.ComponentModel.IContainer components = null;
        private TextBox txtLogs;
        private Button btnRefresh;
        private Button btnClear;
        private Button btnClose;

        private void InitializeComponent()
        {
            this.components = new System.ComponentModel.Container();
            this.txtLogs = new System.Windows.Forms.TextBox();
            this.btnRefresh = new System.Windows.Forms.Button();
            this.btnClear = new System.Windows.Forms.Button();
            this.btnClose = new System.Windows.Forms.Button();
            this.SuspendLayout();
            
            // txtLogs
            this.txtLogs.Location = new System.Drawing.Point(12, 12);
            this.txtLogs.Multiline = true;
            this.txtLogs.Name = "txtLogs";
            this.txtLogs.ReadOnly = true;
            this.txtLogs.ScrollBars = System.Windows.Forms.ScrollBars.Vertical;
            this.txtLogs.Size = new System.Drawing.Size(660, 400);
            this.txtLogs.TabIndex = 0;
            
            // btnRefresh
            this.btnRefresh.Location = new System.Drawing.Point(12, 422);
            this.btnRefresh.Name = "btnRefresh";
            this.btnRefresh.Size = new System.Drawing.Size(80, 30);
            this.btnRefresh.TabIndex = 1;
            this.btnRefresh.Text = "刷新";
            this.btnRefresh.UseVisualStyleBackColor = true;
            this.btnRefresh.Click += new System.EventHandler(this.btnRefresh_Click);
            
            // btnClear
            this.btnClear.Location = new System.Drawing.Point(100, 422);
            this.btnClear.Name = "btnClear";
            this.btnClear.Size = new System.Drawing.Size(80, 30);
            this.btnClear.TabIndex = 2;
            this.btnClear.Text = "清空日志";
            this.btnClear.UseVisualStyleBackColor = true;
            this.btnClear.Click += new System.EventHandler(this.btnClear_Click);
            
            // btnClose
            this.btnClose.Location = new System.Drawing.Point(592, 422);
            this.btnClose.Name = "btnClose";
            this.btnClose.Size = new System.Drawing.Size(80, 30);
            this.btnClose.TabIndex = 3;
            this.btnClose.Text = "关闭";
            this.btnClose.UseVisualStyleBackColor = true;
            this.btnClose.Click += new System.EventHandler(this.btnClose_Click);
            
            // LogViewerForm
            this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
            this.ClientSize = new System.Drawing.Size(684, 464);
            this.Controls.Add(this.btnClose);
            this.Controls.Add(this.btnClear);
            this.Controls.Add(this.btnRefresh);
            this.Controls.Add(this.txtLogs);
            this.Name = "LogViewerForm";
            this.Text = "日志查看器";
            this.ResumeLayout(false);
            this.PerformLayout();
        }

        private void btnRefresh_Click(object sender, EventArgs e)
        {
            LoadLogs();
        }

        private void btnClear_Click(object sender, EventArgs e)
        {
            if (MessageBox.Show("确定要清空所有日志吗？", "确认", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes)
            {
                try
                {
                    File.WriteAllText("logs/backup.log", "");
                    txtLogs.Clear();
                }
                catch (Exception ex)
                {
                    MessageBox.Show($"清空日志失败: {ex.Message}", "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
                }
            }
        }

        private void btnClose_Click(object sender, EventArgs e)
        {
            this.Close();
        }

        #endregion
    }
}

using System;
using System.IO;
using System.Windows.Forms;

namespace DatabaseBackupTool
{
    public partial class CleanupForm : Form
    {
        private List<BackupTask> backupTasks;

        public CleanupForm(List<BackupTask> tasks)
        {
            InitializeComponent();
            backupTasks = tasks;
            LoadTasks();
        }

        private void LoadTasks()
        {
            cmbTasks.Items.Clear();
            foreach (var task in backupTasks)
            {
                cmbTasks.Items.Add(task.Name);
            }
            
            if (cmbTasks.Items.Count > 0)
            {
                cmbTasks.SelectedIndex = 0;
            }
        }

        private void btnCleanup_Click(object sender, EventArgs e)
        {
            if (cmbTasks.SelectedIndex < 0)
            {
                MessageBox.Show("请选择要清理的任务！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Warning);
                return;
            }

            int retentionDays = (int)numRetentionDays.Value;
            if (retentionDays <= 0)
            {
                MessageBox.Show("保留天数必须大于0！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Warning);
                return;
            }

            var task = backupTasks[cmbTasks.SelectedIndex];
            string backupPath = task.BackupPath;

            if (!Directory.Exists(backupPath))
            {
                MessageBox.Show("备份路径不存在！", "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
                return;
            }

            if (MessageBox.Show($"确定要清理 {task.Name} 中超过 {retentionDays} 天的备份文件吗？", "确认", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes)
            {
                try
                {
                    int deletedCount = CleanupOldBackups(backupPath, retentionDays, task.DatabaseName);
                    MessageBox.Show($"清理完成！共删除 {deletedCount} 个备份文件。", "完成", MessageBoxButtons.OK, MessageBoxIcon.Information);
                }
                catch (Exception ex)
                {
                    MessageBox.Show($"清理失败: {ex.Message}", "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
                }
            }
        }

        private int CleanupOldBackups(string backupPath, int retentionDays, string databaseName)
        {
            int deletedCount = 0;
            DateTime cutoffDate = DateTime.Now.AddDays(-retentionDays);

            string[] backupFiles = Directory.GetFiles(backupPath, $"{databaseName}_*.bak");
            foreach (string file in backupFiles)
            {
                FileInfo fileInfo = new FileInfo(file);
                if (fileInfo.CreationTime < cutoffDate)
                {
                    File.Delete(file);
                    deletedCount++;
                    LogManager.Info($"删除旧备份文件: {file}");
                }
            }

            return deletedCount;
        }

        #region Windows Form Designer generated code

        private System.ComponentModel.IContainer components = null;
        private ComboBox cmbTasks;
        private Label label1;
        private NumericUpDown numRetentionDays;
        private Label label2;
        private Button btnCleanup;
        private Button btnClose;

        private void InitializeComponent()
        {
            this.components = new System.ComponentModel.Container();
            this.cmbTasks = new System.Windows.Forms.ComboBox();
            this.label1 = new System.Windows.Forms.Label();
            this.numRetentionDays = new System.Windows.Forms.NumericUpDown();
            this.label2 = new System.Windows.Forms.Label();
            this.btnCleanup = new System.Windows.Forms.Button();
            this.btnClose = new System.Windows.Forms.Button();
            ((System.ComponentModel.ISupportInitialize)(this.numRetentionDays)).BeginInit();
            this.SuspendLayout();
            
            // cmbTasks
            this.cmbTasks.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
            this.cmbTasks.FormattingEnabled = true;
            this.cmbTasks.Location = new System.Drawing.Point(100, 20);
            this.cmbTasks.Name = "cmbTasks";
            this.cmbTasks.Size = new System.Drawing.Size(250, 23);
            this.cmbTasks.TabIndex = 0;
            
            // label1
            this.label1.AutoSize = true;
            this.label1.Location = new System.Drawing.Point(20, 23);
            this.label1.Name = "label1";
            this.label1.Size = new System.Drawing.Size(56, 13);
            this.label1.TabIndex = 1;
            this.label1.Text = "选择任务:";
            
            // numRetentionDays
            this.numRetentionDays.Location = new System.Drawing.Point(100, 50);
            this.numRetentionDays.Maximum = new decimal(new int[] { 365, 0, 0, 0 });
            this.numRetentionDays.Minimum = new decimal(new int[] { 1, 0, 0, 0 });
            this.numRetentionDays.Name = "numRetentionDays";
            this.numRetentionDays.Size = new System.Drawing.Size(120, 23);
            this.numRetentionDays.TabIndex = 2;
            this.numRetentionDays.Value = new decimal(new int[] { 30, 0, 0, 0 });
            
            // label2
            this.label2.AutoSize = true;
            this.label2.Location = new System.Drawing.Point(20, 53);
            this.label2.Name = "label2";
            this.label2.Size = new System.Drawing.Size(56, 13);
            this.label2.TabIndex = 3;
            this.label2.Text = "保留天数:";
            
            // btnCleanup
            this.btnCleanup.Location = new System.Drawing.Point(100, 90);
            this.btnCleanup.Name = "btnCleanup";
            this.btnCleanup.Size = new System.Drawing.Size(100, 30);
            this.btnCleanup.TabIndex = 4;
            this.btnCleanup.Text = "开始清理";
            this.btnCleanup.UseVisualStyleBackColor = true;
            this.btnCleanup.Click += new System.EventHandler(this.btnCleanup_Click);
            
            // btnClose
            this.btnClose.Location = new System.Drawing.Point(210, 90);
            this.btnClose.Name = "btnClose";
            this.btnClose.Size = new System.Drawing.Size(100, 30);
            this.btnClose.TabIndex = 5;
            this.btnClose.Text = "关闭";
            this.btnClose.UseVisualStyleBackColor = true;
            this.btnClose.Click += new System.EventHandler(this.btnClose_Click);
            
            // CleanupForm
            this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
            this.ClientSize = new System.Drawing.Size(370, 130);
            this.Controls.Add(this.btnClose);
            this.Controls.Add(this.btnCleanup);
            this.Controls.Add(this.numRetentionDays);
            this.Controls.Add(this.label2);
            this.Controls.Add(this.cmbTasks);
            this.Controls.Add(this.label1);
            this.Name = "CleanupForm";
            this.Text = "清理旧备份";
            ((System.ComponentModel.ISupportInitialize)(this.numRetentionDays)).EndInit();
            this.ResumeLayout(false);
            this.PerformLayout();
        }

        private void btnClose_Click(object sender, EventArgs e)
        {
            this.Close();
        }

        #endregion
    }
}