使用C#实现DataTable和Excel的数据互转

Install-Package Spire.XLS

using System.Data;
using Spire.Xls;

namespace WriteDataTableToExcel
{
    class Program
    {
        static void Main(string[] args)
        {
            // 创建 Workbook 实例
            Workbook workbook = new Workbook();

            // 移除默认工作表
            workbook.Worksheets.Clear();

            // 添加工作表并命名
            Worksheet worksheet = workbook.Worksheets.Add("InsertDataTable");

            // 创建 DataTable 对象
            DataTable dataTable = new DataTable();
            dataTable.Columns.Add("No", typeof(Int32));
            dataTable.Columns.Add("Name", typeof(String));
            dataTable.Columns.Add("City", typeof(String));

            // 添加行与数据
            DataRow dr = dataTable.NewRow();
            dr[0] = 1; dr[1] = "Tom"; dr[2] = "New York"; dataTable.Rows.Add(dr);
            dr = dataTable.NewRow();
            dr[0] = 2; dr[1] = "Jerry"; dr[2] = "Huston"; dataTable.Rows.Add(dr);
            dr = dataTable.NewRow();
            dr[0] = 3; dr[1] = "Dave"; dr[2] = "Florida"; dataTable.Rows.Add(dr);

            // 写入 DataTable 到工作表
            worksheet.InsertDataTable(dataTable, true, 1, 1, true);

            // 保存到 Excel 文件
            workbook.SaveToFile("InsertDataTable.xlsx", ExcelVersion.Version2016);

            // 释放资源
            workbook.Dispose();
        }
    }
}

using Spire.Xls;
using System.Data;
using System.Windows.Forms;

namespace ReadExcelIntoDataTable
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            // 创建 Workbook 对象
            Workbook wb = new Workbook();

            // 加载现有的 Excel 文件
            wb.LoadFromFile("C:\Users\Administrator\Desktop\Input.xlsx");

            // 获取第一个工作表
            Worksheet sheet = wb.Worksheets[0];

            // 将工作表的数据导出到 DataTable
            DataTable dataTable = sheet.ExportDataTable();

            // 将 DataTable 绑定到 DataGridView
            dataGridView1.DataSource = dataTable;

            // 释放资源
            wb.Dispose();
        }
    }
}