c#高效率导出多维表头excel的实例代码

                //新增加一个工作簿，Workbook是直接保存，不会弹出保存对话框，加上Application会弹出保存对话框，值为false会报错   
                Microsoft.Office.Interop.Excel.Workbook xlBook = excel.Workbooks.Add(true);

                //1.添加表头
                excel.Cells[1, 1] = tyclass;
                for (int i = 0; i < dgv_Result.Columns.Count; i++)
                {

                    excel.Cells[2, i + 1] = dgv_Result.Columns[i].Name;
                }

                #region 2.实现Excel多维表头 采用合并单元格的方式
                Microsoft.Office.Interop.Excel.Worksheet sheet = (Microsoft.Office.Interop.Excel.Worksheet)xlBook.ActiveSheet;
                Microsoft.Office.Interop.Excel.Range excelRange = sheet.get_Range(sheet.Cells[1, 1], sheet.Cells[1, 2]);
                Microsoft.Office.Interop.Excel.Range excelRange1 = sheet.get_Range(sheet.Cells[1, 3], sheet.Cells[1, 4]);
                Microsoft.Office.Interop.Excel.Range excelRange2 = sheet.get_Range(sheet.Cells[1,5], sheet.Cells[1, 6]);
                Microsoft.Office.Interop.Excel.Range excelRange3 = sheet.get_Range(sheet.Cells[1,7], sheet.Cells[1, 8]);
                Microsoft.Office.Interop.Excel.Range excelRange4 = sheet.get_Range(sheet.Cells[1, 2], sheet.Cells[1, 3]);
                Microsoft.Office.Interop.Excel.Range excelRange5 = sheet.get_Range(sheet.Cells[1, 6], sheet.Cells[1, 7]);
                Microsoft.Office.Interop.Excel.Range excelRange6 = sheet.get_Range(sheet.Cells[1, 4], sheet.Cells[1,5]);
                excelRange.Merge(excelRange.MergeCells);
                excelRange1.Merge(excelRange1.MergeCells);
                excelRange4.Merge(excelRange4.MergeCells);
                excelRange2.Merge(excelRange2.MergeCells);
                excelRange3.Merge(excelRange3.MergeCells);
                excelRange5.Merge(excelRange5.MergeCells);
                excelRange6.Merge(excelRange6.MergeCells);
                Microsoft.Office.Interop.Excel.Range columnRange = sheet.get_Range("A1", "H2");   //得到  Range 范围  A-H 表示1-8列，1-2表示跨几行
                 columnRange.HorizontalAlignment = Microsoft.Office.Interop.Excel.XlHAlign.xlHAlignCenter;
                 columnRange.Font.Size = 10;
                 columnRange.Font.Bold = true;

                #endregion

               
                #region 3.添加行数据，直接给Range赋值可提高效率

                 Microsoft.Office.Interop.Excel.Range range = sheet.get_Range("A3", "H" + (dgv_Result.Rows.Count + 2).ToString());   //得到  Range 范围
                string[,] AryData = new string[dgv_Result.Rows.Count-1, dgv_Result.Columns.Count];
                for (int i = 0; i < dgv_Result.Rows.Count - 1; i++)
                {
                    for (int j = 0; j < dgv_Result.Columns.Count; j++)
                    {

                        AryData[i,j] = dgv_Result.Rows[i].Cells[j].Value.ToString();
                    }
                }
                range.Value2 = AryData;
                ran