1 private void 导出ToolStripMenuItem_Click(object sender, EventArgs e) {
 2             string path = "";
 3             SaveFileDialog save = new SaveFileDialog();
 4             save.DefaultExt = "xlsx";
 5             save.Filter = "Excel File(*.xlsx)|*.xlsx";
 6             if (save.ShowDialog() == DialogResult.OK) {
 7                 path = save.FileName;
 8                 if(DataTableToExcel(path,dt,true)) {
 9                     MessageBox.Show("导出成功");
10                 }
11             }
12             else {
13                 return;
14             }
15         }
16         public  bool DataTableToExcel(string filePath, System.Data.DataTable dataTable, bool isShowExcle) {
17             //System.Data.DataTable dataTable = dataSet.Tables[0];
18             int rowNumber = dataTable.Rows.Count;
19             int columnNumber = dataTable.Columns.Count;
20             int colIndex = 0;
21             if (rowNumber == 0) {
22                 return false;
23             }
24             Microsoft.Office.Interop.Excel.Application excel = new Microsoft.Office.Interop.Excel.Application();
25             Microsoft.Office.Interop.Excel.Workbook workbook = excel.Workbooks.Add(Microsoft.Office.Interop.Excel.XlWBATemplate.xlWBATWorksheet);
26             Microsoft.Office.Interop.Excel.Worksheet worksheet = (Microsoft.Office.Interop.Excel.Worksheet)workbook.Worksheets[1];
27             excel.Visible = isShowExcle;
28             Microsoft.Office.Interop.Excel.Range range;
29             foreach (DataColumn col in dataTable.Columns) {
30                 colIndex++;
31                 excel.Cells[1, colIndex] = col.ColumnName;
32             }
33             object[,] objData = new object[rowNumber, columnNumber];
34             for (int r = 0; r < rowNumber; r++) {
35                 for (int c = 0; c < columnNumber; c++) {
36                     objData[r, c] = dataTable.Rows[r][c];
37                 }
38             }
39             range= worksheet.Range[worksheet.Cells[2,1], worksheet.Cells[rowNumber + 1, columnNumber]]; //4.0版本以上
40             // range = worksheet.get_Range(excel.Cells[2, 1], excel.Cells[rowNumber + 1, columnNumber]); //如果出现没有找到get_Range定义是因为版本不同，使用上面的就可以啦
41             range.Value = objData;
42             worksheet.SaveAs(filePath, Type.Missing, Type.Missing, Type.Missing, Type.Missing,Type.Missing,Type.Missing, Type.Missing, Type.Missing, Type.Missing);
43             //excel.Quit();
44             return true;
45         }