使用NPO写excel文件

写excel文件

        /// <summary>
        /// Use NPO to write a datatable to the excel file
        /// </summary>
        /// <param name="tmpDataTable"></param>
        /// <param name="strFileName"></param>
        private static void DataTabletoExcel(DataTable dataTable, string strFileName)
        {
            XSSFWorkbook workbook = new XSSFWorkbook();
            ISheet sheet = workbook.CreateSheet("Sheet1");
            int index = 0;
            IRow titleRow = sheet.CreateRow(index++);
            for (int i = 0; i < dataTable.Columns.Count; i++)
            {
                titleRow.CreateCell(i).SetCellValue(dataTable.Columns[i].ColumnName);
            }
            foreach (DataRow dr in dataTable.Rows)
            {
                IRow row = sheet.CreateRow(index++);
                for (int i = 0; i < dataTable.Columns.Count; i++)
                {
                    row.CreateCell(i).SetCellValue(dr[i].ToString());
                }
            }

            FileStream fileStream = new FileStream(strFileName, FileMode.Create);
            workbook.Write(fileStream);
            fileStream.Close();
            workbook = null;
        }