NPOI 1.2.3教程 -15 插入图片InsertPicture

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

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

Sheet sheet1 = hssfworkbook.CreateSheet("PictureSheet");

HSSFPatriarch patriarch = (HSSFPatriarch)sheet1.CreateDrawingPatriarch();
//create the anchor
HSSFClientAnchor anchor;
anchor = new HSSFClientAnchor(0, 0, 0, 255, 2, 2, 4, 7);
anchor.AnchorType = 2;
//load the picture and get the picture index in the workbook
HSSFPicture picture = (HSSFPicture)patriarch.CreatePicture(anchor, LoadImage("../../image/HumpbackWhale.jpg", hssfworkbook));
//Reset the image to the original size.
picture.Resize();
picture.LineStyle = HSSFPicture.LINESTYLE_DASHDOTGEL;

WriteToFile();
}

public static int LoadImage(string path, HSSFWorkbook wb)
{
FileStream file = new FileStream(path, FileMode.Open, FileAccess.Read);
byte[] buffer = new byte[file.Length];
file.Read(buffer, 0, (int)file.Length);
return wb.AddPicture(buffer, PictureType.JPEG);

}

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;
}
}
}