DataGridview导出excel

最新推荐文章于 2024-08-03 16:00:00 发布

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本文介绍了一种使用C#将DataGridView控件中的数据导出到Excel文件的方法。该方法适用于已安装Microsoft Office的机器，通过实例化Excel应用程序对象，创建新的工作簿，并将DataGridView的数据逐行写入。此外，还提供了自动调整列宽的功能。

这个方法需要使用的机器安装有microsoft office软件，

using System;
using System.Collections.Generic;
using System.Text;
using System.Data;
using System.Drawing;
using System.Windows.Forms;
using System.Data.SqlClient;
using Microsoft.Internal.Performance;
using Microsoft.CSharp;

namespace WareHouse
{
    class ExitToExcel
    {
        public void exitToExcel(DataGridView DGV, string fileName)  //传入DGV与要导出的文件名作为参数
        {
            if (DGV.Rows.Count > 0)
            {

                string saveFileName = fileName;
                SaveFileDialog saveDialog = new SaveFileDialog();
                saveDialog.DefaultExt = "xls";
                saveDialog.Filter = "Excel文件|*.xls";
                saveDialog.FileName = saveFileName;
                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                                                                                                                    //写入标题
                for (int i = 0; i < DGV.ColumnCount; i++)
                {
                    worksheet.Cells[1, i + 1] = DGV.Columns[i].HeaderText;
                }
                //写入数值
                for (int r = 0; r < DGV.Rows.Count; r++)
                {
                    try
                    {
                        for (int i = 0; i < DGV.ColumnCount; i++)
                        {

                            worksheet.Cells[r + 2, i + 1] = Convert.ToString(DGV.Rows[r].Cells[i].Value.ToString());

                        }
                        System.Windows.Forms.Application.DoEvents();

                    }

                    catch
                    { }
                }
                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();
                System.Diagnostics.Process.Start(saveFileName); //打开EXCEL
                MessageBox.Show("资料保存成功", "提示", MessageBoxButtons.OK);
            }
            else
            {
                MessageBox.Show("报表为空,无表格需要导出", "提示", MessageBoxButtons.OK);
            }
        }
    }
}