C#把DataGridVIew数据导出到Excel函数代码

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

using Microsoft.Office.Core;
using EXCEL = Microsoft.Office.Interop.Excel;

//数据库支持
using System.Data.SqlClient;
using System.Data.OleDb;

using System.Threading;

        /// <summary>
        /// 把DataGridView数据导出到Excel（注：pb_Excel是一个进度条控件）
        /// </summary>
        /// <param name="fileName">导出后的文件名.xls（中间可以修改）</param>
        /// <param name="myDGV">要导出的DataGridView对象</param>

<span style="white-space:pre">	</span>private void ExportExcel(string fileName, DataGridView myDGV)
        {
            string saveFileName = "";
            SaveFileDialog saveDialog = new SaveFileDialog();
            saveDialog.DefaultExt = "xls";
            saveDialog.Filter = "Excel文件|*.xls";
            saveDialog.FileName = fileName;
            saveDialog.ShowDialog();
            saveFileName = saveDialog.FileName;
            if (saveFileName.IndexOf(":") < 0) return; //被点了取消
            Microsoft.Office.Interop.Excel.Application xlApp = new Microsoft.Office.Interop.Excel.Application();
            if (xlApp == null)
            {
                MessageBox.Show("无法创建Excel对象，可能您的机子未安装Excel");
                return;
            }
            Microsoft.Office.Interop.Excel.Workbooks workbooks = xlApp.Workbooks;
            Microsoft.Office.Interop.Excel.Workbook workbook = workbooks.Add(Microsoft.Office.Interop.Excel.XlWBATemplate.xlWBATWorksheet);
            Microsoft.Office.Interop.Excel.Worksheet worksheet = (Microsoft.Office.Interop.Excel.Worksheet)workbook.Worksheets[1];//取得sheet1

            //进度条的使用
            pb_Excel.Refresh();
            pb_Excel.Visible = true;
            pb_Excel.Value = 1;
            pb_Excel.Minimum = 1;
            pb_Excel.Maximum = myDGV.RowCount;
            pb_Excel.Step = 1;

            //写入标题
            for (int i = 0; i < myDGV.ColumnCount; i++)
            {
                worksheet.Cells[1, i + 1] = myDGV.Columns[i].HeaderText;
            }
            //写入数值
            for (int r = 0; r < myDGV.Rows.Count; r++)
            {
                pb_Excel.PerformStep(); 

                for (int i = 0; i < myDGV.ColumnCount; i++)
                {
                    worksheet.Cells[r + 2, i + 1] = myDGV.Rows[r].Cells[i].Value;
                }
                System.Windows.Forms.Application.DoEvents();
            }
            //pb_Excel.Visible   =   false;
            pb_Excel.Value = 1;

            worksheet.Columns.EntireColumn.AutoFit();//列宽自适应
            if (saveFileName != "")
            {
                try
                {
                    workbook.Saved = true;
                    workbook.SaveCopyAs(saveFileName);
                }
                catch (Exception ex)
                {
                    MessageBox.Show("导出文件时出错,文件可能正被打开！\n" + ex.Message);
                }
            }
            xlApp.Quit();
            GC.Collect();//强行销毁
            //MessageBox.Show("文件： " + FileName + ".xls 保存成功", "信息提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
            MessageBox.Show("文件保存成功", "信息提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
        }

原文地址：<a target=_blank href="http://blog.sina.com.cn/s/blog_62cd5a980101905a.html">http://blog.sina.com.cn/s/blog_62cd5a980101905a.html</a>