NPOI 1.2.3教程 - 4 基本公式 BasicFormula

using System;
using System.Text;
using System.IO;
using NPOI.HSSF.UserModel;
using NPOI.HPSF;
using NPOI.POIFS.FileSystem;
using NPOI.SS.UserModel;

namespace UseBasicFormulaInXls
{
class Program
{
static void Main(string[] args)
{
InitializeWorkbook();

Sheet s1=hssfworkbook.CreateSheet("Sheet1");
//set A2
s1.CreateRow(1).CreateCell(0).SetCellValue(-5);
//set B2
s1.CreateRow(1).CreateCell(1).SetCellValue(1111);
//set C2
s1.CreateRow(1).CreateCell(2).SetCellValue(7.623);
//set A3
s1.CreateRow(2).CreateCell(0).SetCellValue(2.2);

//set A4=A2+A3
s1.CreateRow(3).CreateCell(0).CellFormula = "A2+A3";
//set D2=SUM(A2:C2);
s1.CreateRow(1).CreateCell(3).CellFormula = "SUM(A2:C2)";
//set A5=cos(5)+sin(10)
s1.CreateRow(4).CreateCell(0).CellFormula="cos(5)+sin(10)";

//create another sheet
Sheet s2 = hssfworkbook.CreateSheet("Sheet2");
//set cross-sheet reference
s2.CreateRow(0).CreateCell(0).CellFormula = "Sheet1!A2+Sheet1!A3";

WriteToFile();
}

static HSSFWorkbook hssfworkbook;

static void WriteToFile()
{
//Write the stream data of workbook to the root directory
FileStream file = new FileStream(@"test.xls", FileMode.Create);
hssfworkbook.Write(file);
file.Close();
}

static void InitializeWorkbook()
{
hssfworkbook = new HSSFWorkbook();

//create a entry of DocumentSummaryInformation
DocumentSummaryInformation dsi = PropertySetFactory.CreateDocumentSummaryInformation();
dsi.Company = "NPOI Team";
hssfworkbook.DocumentSummaryInformation = dsi;

//create a entry of SummaryInformation
SummaryInformation si = PropertySetFactory.CreateSummaryInformation();
si.Subject = "NPOI SDK Example";
hssfworkbook.SummaryInformation = si;
}
}
}