WinForm中DataGridView导出为Excel(快速版)

        public static void ExportExcel(DataGridView myDGV, string fileName)
        {
            string saveFileName = fileName;
            //SaveFileDialog saveDialog = new SaveFileDialog();
            //saveDialog.DefaultExt = "xls";
            //saveDialog.Filter = "Excel文件|*.xls";
            //saveDialog.FileName = fileName;
            //saveDialog.ShowDialog();
            //saveFileName = saveDialog.FileName;
            if (saveFileName.IndexOf(":") < ) 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[];//取得sheet1
            //写入标题
            for (int i = ; i < myDGV.ColumnCount; i++)
            {
                worksheet.Cells[, i + ] = myDGV.Columns[i].HeaderText;
            }
            //写入数值
            for (int r = ; r < myDGV.Rows.Count; r++)
            {
                for (int i = ; i < myDGV.ColumnCount; i++)
                {
                    worksheet.Cells[r + , i + ] = 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！\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);
        }