NPOI导入导出Excel

using (FileStream stream = new FileStream(@"c:\客户资料.xls", FileMode.Open, FileAccess.Read))

{

HSSFWorkbook workbook = new HSSFWorkbook(stream);

MessageBox.Show(workbook.GetSheetName(0));

}

HSSFWorkbook workbook = new HSSFWorkbook();

HSSFSheet sheet = workbook.CreateSheet();

HSSFRow row = sheet.CreateRow(0);

row.CreateCell(0, HSSFCell.CELL_TYPE_STRING).SetCellValue("Hello");

row.CreateCell(1, HSSFCell.CELL_TYPE_NUMERIC).SetCellValue(3.14);

using (FileStream stream = new FileStream(@"c:\1.xls", FileMode.OpenOrCreate, FileAccess.ReadWrite))

{

workbook.Write(stream);

}