NPOI介绍

用于读取和写入Microsoft Office二进制和OOXML文件格式的.NET库。

Excel 操作

详细代码如下

Export Excel

var newFile = @"newbook.core.xlsx";
using (var fs = new FileStream(newFile, FileMode.Create, FileAccess.Write)) {
    IWorkbook workbook = new XSSFWorkbook();
    ISheet sheet1 = workbook.CreateSheet("Sheet1");
    sheet1.AddMergedRegion(new CellRangeAddress(0, 0, 0, 10));
    var rowIndex = 0;
    IRow row = sheet1.CreateRow(rowIndex);
    row.Height = 30 * 80;
    row.CreateCell(0).SetCellValue("this is content");
    sheet1.AutoSizeColumn(0);
    rowIndex++;
    var sheet2 = workbook.CreateSheet("Sheet2");
    var style1 = workbook.CreateCellStyle();
    style1.FillForegroundColor = HSSFColor.Blue.Index2;
    style1.FillPattern = FillPattern.SolidForeground;
    var style2 = workbook.CreateCellStyle();
    style2.FillForegroundColor = HSSFColor.Yellow.Index2;
    style2.FillPattern = FillPattern.SolidForeground;
    var cell2 = sheet2.CreateRow(0).CreateCell(0);
    cell2.CellStyle = style1;
    cell2.SetCellValue(0);
    cell2 = sheet2.CreateRow(1).CreateCell(0);
    cell2.CellStyle = style2;
    cell2.SetCellValue(1);
    workbook.Write(fs);
}
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Export Word

 var newFile2 = @"newbook.core.docx";
using (var fs = new FileStream(newFile2, FileMode.Create, FileAccess.Write)) {
    XWPFDocument doc = new XWPFDocument();
    var p0 = doc.CreateParagraph();
    p0.Alignment = ParagraphAlignment.CENTER;
    XWPFRun r0 = p0.CreateRun();
    r0.FontFamily = "microsoft yahei";
    r0.FontSize = 18;
    r0.IsBold = true;
    r0.SetText("This is title");
    var p1 = doc.CreateParagraph();
    p1.Alignment = ParagraphAlignment.LEFT;
    p1.IndentationFirstLine = 500;
    XWPFRun r1 = p1.CreateRun();
    r1.FontFamily = "·ÂËÎ";
    r1.FontSize = 12;
    r1.IsBold = true;
    r1.SetText("This is content, content content content content content content content content content");
    doc.Write(fs);
}
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NPOI

NPOI 1.2.x主要由POIFS、DDF、HPSF、HSSF、SS、Util六部分组成。

NPOI.POIFS

OLE2/ActiveX文档属性读写库

NPOI.DDF

Microsoft Office Drawing读写库

NPOI.HPSF

OLE2/ActiveX文档读写库

NPOI.HSSF

Microsoft Excel BIFF(Excel 97-2003)格式读写库

NPOI.SS

Excel公用接口及Excel公式计算引擎

NPOI.Util

基础类库，提供了很多实用功能，可用于其他读写文件格式项目的开发

• HSSFWorkbook:是操作Excel2003以前（包括2003）的版本，扩展名是.xls
• XSSFWorkbook:是操作Excel2007的版本，扩展名是.xlsx

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NPOI进行Excel和Word操作

名称空间及描述

例子

1. ExportExcel

   var newFile = @"newbook.core.xlsx";
   using (var fs = new FileStream(newFile, FileMode.Create, FileAccess.Write)) {
       IWorkbook workbook = new XSSFWorkbook();
       ISheet sheet1 = workbook.CreateSheet("Sheet1");
       sheet1.AddMergedRegion(new CellRangeAddress(0, 0, 0, 10));
       var rowIndex = 0;
       IRow row = sheet1.CreateRow(rowIndex);
       row.Height = 30 * 80;
       row.CreateCell(0).SetCellValue("this is content");
       sheet1.AutoSizeColumn(0);
       rowIndex++;
       var sheet2 = workbook.CreateSheet("Sheet2");
       var style1 = workbook.CreateCellStyle();
       style1.FillForegroundColor = HSSFColor.Blue.Index2;
       style1.FillPattern = FillPattern.SolidForeground;
       var style2 = workbook.CreateCellStyle();
       style2.FillForegroundColor = HSSFColor.Yellow.Index2;
       style2.FillPattern = FillPattern.SolidForeground;
       var cell2 = sheet2.CreateRow(0).CreateCell(0);
       cell2.CellStyle = style1;
       cell2.SetCellValue(0);
       cell2 = sheet2.CreateRow(1).CreateCell(0);
       cell2.CellStyle = style2;
       cell2.SetCellValue(1);
       workbook.Write(fs);
   }
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2. ExportWord

   var newFile2 = @"newbook.core.docx";
   using (var fs = new FileStream(newFile2, FileMode.Create, FileAccess.Write)) {
       XWPFDocument doc = new XWPFDocument();
       var p0 = doc.CreateParagraph();
       p0.Alignment = ParagraphAlignment.CENTER;
       XWPFRun r0 = p0.CreateRun();
       r0.FontFamily = "microsoft yahei";
       r0.FontSize = 18;
       r0.IsBold = true;
       r0.SetText("This is title");
       var p1 = doc.CreateParagraph();
       p1.Alignment = ParagraphAlignment.LEFT;
       p1.IndentationFirstLine = 500;
       XWPFRun r1 = p1.CreateRun();
       r1.FontFamily = "·ÂËÎ";
       r1.FontSize = 12;
       r1.IsBold = true;
       r1.SetText("This is content, content content content content content content content content content");
       doc.Write(fs);
   }
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