NPOI2.2.0.0实例详解(十一)—向EXCEL插入图片

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using NPOI.HSSF.UserModel;
using NPOI.SS.Formula.Eval;
using NPOI.SS.Formula.Functions;
using NPOI.SS.UserModel;
using NPOI.XSSF.UserModel;
using NPOI.POIFS.FileSystem;
using NPOI.HPSF;
using System.IO;
using NPOI.SS.Util;
using System.Drawing;
using NPOI.HSSF.Util;
using System.Web;
using System.Net;
using System.Net.Mail;
namespace NPOI
{
    class Program10
    {
        static void Main(string[] args)
        {

            //说明：插入图片

            //1.创建EXCEL中的Workbook         
            IWorkbook myworkbook = new HSSFWorkbook();

            //2.创建Workbook中的Sheet        
            ISheet mysheet = myworkbook.CreateSheet("sheet1");

            //第一步：读取图片到byte数组
            HttpWebRequest request = (HttpWebRequest)WebRequest.Create("http://img1.soufunimg.com/message/images/card/tuanproj/201511/2015112703584458_s.jpg");

            byte[] bytes;
            using (Stream stream = request.GetResponse().GetResponseStream())
            {
                using (MemoryStream mstream = new MemoryStream())
                {
                    int count = 0;
                    byte[] buffer = new byte[1024];
                    int readNum = 0;
                    while ((readNum = stream.Read(buffer, 0, 1024)) > 0)
                    {
                        count = count + readNum;
                        mstream.Write(buffer, 0, 1024);
                    }
                    mstream.Position = 0;
                    using (BinaryReader br = new BinaryReader(mstream))
                    {

                        bytes = br.ReadBytes(count);
                    }
                }
            }
           
            //第二步：将图片添加到workbook中  指定图片格式 返回图片所在workbook->Picture数组中的索引地址（从1开始）
            int pictureIdx = myworkbook.AddPicture(bytes, PictureType.JPEG);

            //第三步：在sheet中创建画部
            IDrawing patriarch = mysheet.CreateDrawingPatriarch();

            //第四步：设置锚点 （在起始单元格的X坐标0-1023，Y的坐标0-255，在终止单元格的X坐标0-1023，Y的坐标0-255，起始单元格行数，列数，终止单元格行数，列数）
            IClientAnchor anchor =patriarch.CreateAnchor(0,0,0,0,0,0,2,2);


            //第五步：创建图片
            IPicture pict = patriarch.CreatePicture(anchor, pictureIdx);
      
            //6.保存       
            FileStream file = new FileStream(@"E:\myworkbook11.xls", FileMode.Create);
            myworkbook.Write(file);
            file.Close();
        }
    }
}

运行后，效果如下图所示