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); }