c#使用FreeSql生产环境时自动升级备份数据库

using Bonn.Helper;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Threading.Tasks;
using System.Windows.Forms;
using FreeSql.DataAnnotations;
using WindowsClient.Model;
using System.Reflection;

namespace WindowsClient
{
    static class Program
    {
        /// <summary>
        /// 客户数据库路径
        /// </summary>
        private static string CustDbPath = Application.StartupPath + $"\\数据库\\cust.db";

        /// <summary>
        /// 数据库ORM
        /// </summary>
        public static IFreeSql fsql;

        /// <summary>
        /// 服务器数据库版本
        /// </summary>
        private static int ServerDbVer = 1000;


        /// <summary>
        /// 应用程序的主入口点。
        /// </summary>
        [STAThread]
        static void Main()
        {
            try
            {

                //数据库是否存在，用于插入初始数据，必须在freesql实例化前判断，因为实例化时会自动创建数据库
                var custDbPathExists = File.Exists(CustDbPath);

                //deebug自动同步实体结构到数据库，release手动同步
                bool syncDbStructure = false;
#if DEBUG
                syncDbStructure = true;
#endif

                fsql = new FreeSql.FreeSqlBuilder()
                    .UseConnectionString(FreeSql.DataType.Sqlite, $@"Data Source={CustDbPath}; Pooling=true;Min Pool Size=1")
                    .UseAutoSyncStructure(syncDbStructure) //deebug自动同步实体结构到数据库，release手动同步
                    .UseMonitorCommand(cmd => Console.WriteLine($"线程：{cmd.CommandText}\r\n"))
                    .Build(); //请务必定义成 Singleton 单例模式

                if(syncDbStructure)
                {
                    //主要用于开发模式下，让数据库修改快速生效，不加此句时，只有在用到表时才会同步
                    fsql.CodeFirst.SyncStructure(GetTypesByTableAttribute());
                }

                if (custDbPathExists == false)
                {
                    //数据库文件不存在，表示是首次安装
                    fsql.CodeFirst.SyncStructure(GetTypesByTableAttribute());
                    var sysConfig = new SysConfig();
                    sysConfig.DbVer = ServerDbVer;
                    var dbResult = fsql.Insert(sysConfig).ExecuteAffrows();
                    if (dbResult <= 0)
                        throw new Exception("初始数据库失败。");

                    var row = new DbLog();
                    row.DbVer = ServerDbVer;
                    fsql.Insert(row).ExecuteAffrows();
                }
                int localDbVer = fsql.Select<SysConfig>().First().DbVer;
                if (localDbVer != ServerDbVer)
                {
                    //数据库版本不一样，需要升级
                    //备份数据库
                    File.Copy(CustDbPath, Application.StartupPath + $"\\数据库\\cust{DateTime.Now:yyyyMMddHHmmss}.db");
                    //升级数据库
                    fsql.CodeFirst.SyncStructure(GetTypesByTableAttribute());
                    var row = new DbLog();
                    row.DbVer = ServerDbVer;
                    fsql.Insert(row).ExecuteAffrows();
                }

                Application.EnableVisualStyles();
                Application.SetCompatibleTextRenderingDefault(false);
                Application.Run(new FrmMain());
            }
            catch (Exception e)
            {
                MessageBox.Show(e.ToString(), "出错啦", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }

        public static Type[] GetTypesByTableAttribute()
        {
            List<Type> tableAssembies = new List<Type>();
            foreach (Type type in Assembly.GetAssembly(typeof(IEntity)).GetExportedTypes())
            {
                foreach (Attribute attribute in type.GetCustomAttributes())
                {
                    if (attribute is TableAttribute tableAttribute)
                    {
                        if (tableAttribute.DisableSyncStructure == false)
                        {
                            tableAssembies.Add(type);
                        }
                    }
                }
            };
            return tableAssembies.ToArray();
        }
    }
}

using FreeSql.DataAnnotations;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace WindowsClient.Model
{
    /// <summary>
    /// 
    /// </summary>
    [Table(Name = "sys_config")]
    public class SysConfig : IEntity
    {
        /// <summary>
        /// 主键
        /// </summary>
        [Column(Name = "id", IsIdentity = true, IsPrimary = true)]
        public int Id { get; set; }

        /// <summary>
        /// 主键
        /// </summary>
        [Column(Name = "dbVer")]
        public int DbVer { get; set; }

        /// <summary>
        /// 创建时间
        /// </summary>
        [Column(ServerTime = DateTimeKind.Local, CanUpdate = false)]
        public DateTime CreateTime { get; set; }

        /// <summary>
        /// 修改时间
        /// </summary>
        [Column(ServerTime = DateTimeKind.Local, CanUpdate = true)]
        public DateTime UpdateTime { get; set; }

    }
}

using FreeSql.DataAnnotations;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace WindowsClient.Model
{
    /// <summary>
    /// 
    /// </summary>
    [Table(Name = "db_log")]
    public class DbLog : IEntity
    {
        /// <summary>
        /// 主键
        /// </summary>
        [Column(Name = "id", IsIdentity = true, IsPrimary = true)]
        public int Id { get; set; }

        /// <summary>
        /// 主键
        /// </summary>
        [Column(Name = "dbVer")]
        public int DbVer { get; set; }

        /// <summary>
        /// 创建时间
        /// </summary>
        [Column(ServerTime = DateTimeKind.Local, CanUpdate = false)]
        public DateTime CreateTime { get; set; }

        /// <summary>
        /// 修改时间
        /// </summary>
        [Column(ServerTime = DateTimeKind.Local, CanUpdate = true)]
        public DateTime UpdateTime { get; set; }
    }
}