将图片的二进制字节在HTML页面中显示

两种方法：

后端的一般处理程序：Imge.ashx

 using System;

 using System.Collections.Generic;

 using System.Linq;

 using System.Web;

 using System.Web.UI.WebControls;

 namespace Test

 {

     /// <summary>

     /// Imge 的摘要说明

     /// </summary>

     public class Imge : IHttpHandler

     {

         public void ProcessRequest(HttpContext context)

         {

             #region 方法一

             System.IO.MemoryStream ms = new System.IO.MemoryStream();

             System.IO.Stream str = new FileUpload().PostedFile.InputStream;

             System.Drawing.Bitmap map = new System.Drawing.Bitmap(str);

             map.Save(ms, System.Drawing.Imaging.ImageFormat.Jpeg);

             context.Response.ClearContent();

             context.Response.ContentType = "image/Jpeg";

             context.Response.BinaryWrite(ms.ToArray());  //将二进制字节输出到页面

             #endregion

             #region 方法二

             System.IO.FileStream fs = new System.IO.FileStream("Filename", System.IO.FileMode.Open, System.IO.FileAccess.Read);

             byte[] datas = new byte[fs.Length];

             fs.Read(datas, , Convert.ToInt32(fs.Length));

             fs.Close();

             context.Response.OutputStream.Write(datas, , Convert.ToInt32(fs.Length));

             context.Response.End();

             #endregion

         }

         public bool IsReusable

         {

             get

             {

                 return false;

             }

         }

     }

 }

HTML页面代码：

 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

 <html xmlns="http://www.w3.org/1999/xhtml">

 <head>

     <title></title>

 </head>

 <body>

 <img src="/Imge.ashx" />  <!---图片的src指向Imge.ashx 就可以--->

 </body>

 </html>

html页面

将图片的二进制字节 在HTML页面中显示

将图片的二进制字节在HTML页面中显示