c#-winform中DataGridView的数据实现导出excel

首先需要引入程序集：Microsoft.Office.Interop.Excel  （如果没有引用过的需要右键添加引用再搜索就行了）

　　　private void button1_Click(object sender, EventArgs e)

　　　{

    　　string a = "D:" + "\KKHMD.xls";

    　　ExportExcels(a, dataGridView1);

　　　}

 

　　 /// <summary>

   ///

   /// </summary>

   /// <param name="fileName">文件路径</param>

   /// <param name="myDGV">控件DataGridView</param>

   private void ExportExcels(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

       //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++)

       {

           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();

       }

       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！ " + 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);

   }