public static void ExportExcel(string fileName, DataGridView myDGV)
        {
            if (myDGV.Rows.Count > 0)
            {

                string saveFileName = "";
                //bool fileSaved = false;
                SaveFileDialog saveDialog = new SaveFileDialog();
                saveDialog.DefaultExt = "xls";
                saveDialog.Filter = "Excel檔案|*.xls";
                saveDialog.FileName = fileName;
                saveDialog.ShowDialog();
                saveFileName = saveDialog.FileName;
                if (saveFileName.IndexOf(":") < 0) return; //被點了取消 
                Microsoft.Office.Interop.Excel.Application xlApp = new Microsoft.Office.Interop.Excel.Application();
                if (xlApp == null)
                {
                    MessageBox.Show("無法建立Excel物件，可能您的機子未安裝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

                //寫入標題
                for (int i = 0; i < myDGV.ColumnCount; i++)
                {
                    worksheet.Cells[1, i + 1] = myDGV.Columns[i].HeaderText;
                }
                //寫入數值
                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();//列寬自適應
                //if (Microsoft.Office.Interop.cmbxType.Text != "Notification")
                //{
                //    Excel.Range rg = worksheet.get_Range(worksheet.Cells[2, 2], worksheet.Cells[ds.Tables[0].Rows.Count + 1, 2]);
                //    rg.NumberFormat = "00000000";
                //}

                if (saveFileName != "")
                {
                    try
                    {
                        workbook.Saved = true;
                        workbook.SaveCopyAs(saveFileName);
                        //fileSaved = true;
                    }
                    catch (Exception ex)
                    {
                        //fileSaved = false;
                        MessageBox.Show("匯出檔案時出錯,檔案可能正被開啟！\n" + ex.Message);
                    }

                }
                //else
                //{
                //    fileSaved = false;
                //}
                xlApp.Quit();
                GC.Collect();//強行銷燬 
                // if (fileSaved && System.IO.File.Exists(saveFileName)) System.Diagnostics.Process.Start(saveFileName); //開啟EXCEL
                MessageBox.Show(fileName + "的簡明資料儲存成功", "提示", MessageBoxButtons.OK);
            }
            else
            {
                MessageBox.Show("報表為空,無表格需要匯出","提示",MessageBoxButtons.OK);
            }

        }
        
        #endregion