NPOI格式设置1

using NPOI.SS.UserModel; using NPOI.HSSF.UserModel; //创建Execl IWorkbook hssfworkbook =new HSSFWorkbook(); //创建一个Sheet hssfworkbook.CreateSheet("Sheet1"); //HSSFWorkbook实例写入文件 FileStream file = new FileStream(@"test.xls", FileMode.Create); hssfworkbook.Write(file); file.Close(); //要创建单元格首先要创建单元格所在的行，比如，下面的代码创建了第0行： ISheet sheet1 = hssfworkbook.CreateSheet("Sheet1"); IRow row1=sheet1.CreateRow(0); //行建好了，就可以建单元格了，比如创建A1位置的单元格： row1.CreateCell(0).SetCellValue("This is a Sample"); //或者sheet1.GetRow(0).CreateCell(0).SetCellValue("This is a Sample"); //set header text 设置页眉 s1.Header.Center = "This is a test sheet"; //set footer text 设置页脚 s1.Footer.Left = "Copyright NPOI Team"; s1.Footer.Right = "created by 123"; //set date format 设置单元格格式 ICellStyle cellStyle = hssfworkbook.CreateCellStyle(); IDataFormat format = hssfworkbook.CreateDataFormat(); cellStyle.DataFormat = format.GetFormat("yyyy年m月d日"); //cellStyle.DataFormat = HSSFDataFormat.GetBuiltinFormat("0.00"); 单元格格式为“0.00”来表示,"￥#,##0"美元显示,"0.00%"百分比显示 cell.CellStyle=cellStyle; //合并单元格 IRow row = sheet.CreateRow(0); ICell cell = row.CreateCell(0); cell.SetCellValue("Sales Report"); ICellStyle style = hssfworkbook.CreateCellStyle(); style.Alignment = HorizontalAlignment.CENTER; IFont font = hssfworkbook.CreateFont(); font.FontHeight = 20*20; style.SetFont(font); cell.CellStyle = style; sheet.AddMergedRegion(new Region(0, 0, 0, 5));