C#Winform实现高效率导入和导出Excel文件

/// <summary>
        /// 导出Excel文件
        /// </summary>
        /// /// <param name="dataSet"></param>
        /// <param name="dataTable">数据集</param>
        /// <param name="isShowExcle">导出后是否打开文件</param>
        /// <returns></returns>
        public static bool DataTableToExcel(string filePath, System.Data.DataTable dataTable, bool isShowExcle)
        {
            //System.Data.DataTable dataTable = dataSet.Tables[0];
            int rowNumber = dataTable.Rows.Count;
            int columnNumber = dataTable.Columns.Count;
            int colIndex = 0;

            if (rowNumber == 0)
            {
                return false;
            }

            Microsoft.Office.Interop.Excel.Application excel = new Microsoft.Office.Interop.Excel.Application();
            Microsoft.Office.Interop.Excel.Workbook workbook = excel.Workbooks.Add(Microsoft.Office.Interop.Excel.XlWBATemplate.xlWBATWorksheet);
            Microsoft.Office.Interop.Excel.Worksheet worksheet = (Microsoft.Office.Interop.Excel.Worksheet)workbook.Worksheets[1];
            excel.Visible = isShowExcle;
            Microsoft.Office.Interop.Excel.Range range;


            foreach (DataColumn col in dataTable.Columns)
            {
                colIndex++;
                excel.Cells[1, colIndex] = col.ColumnName;
            }

            object[,] objData = new object[rowNumber, columnNumber];

            for (int r = 0; r < rowNumber; r++)
            {
                for (int c = 0; c < columnNumber; c++)
                {
                    objData[r, c] =dataTable.Rows[r][c];
                }
            }

            range = worksheet.get_Range(excel.Cells[2, 1], excel.Cells[rowNumber + 1, columnNumber]);

            range.Value2 = objData;

            range.NumberFormatLocal = "@";

            worksheet.SaveAs(filePath, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing);

           //excel.Quit();
            return true;
        }/// <summary>
        /// 导出Excel文件
        ///