两种方法：
后端的一般处理程序：Imge.ashx
1 using System; 2 using System.Collections.Generic; 3 using System.Linq; 4 using System.Web; 5 using System.Web.UI.WebControls; 6 7 namespace Test 8 { 9/// <summary>10/// Imge 的摘要说明11/// </summary>12public class Imge : IHttpHandler13{14 15 public void ProcessRequest(HttpContext context)16 {17 18 #region 方法一19 System.IO.MemoryStream ms = new System.IO.MemoryStream();20 System.IO.Stream str = new FileUpload().PostedFile.InputStream;21 System.Drawing.Bitmap map = new System.Drawing.Bitmap(str);22 map.Save(ms, System.Drawing.Imaging.ImageFormat.Jpeg);23 context.Response.ClearContent();24 context.Response.ContentType = "image/Jpeg";25 context.Response.BinaryWrite(ms.ToArray()); //将二进制字节输出到页面 26 #endregion27 28 #region 方法二29 System.IO.FileStream fs = new System.IO.FileStream("Filename", System.IO.FileMode.Open, System.IO.FileAccess.Read);30 byte[] datas = new byte[fs.Length];31 fs.Read(datas, 0, Convert.ToInt32(fs.Length));32 fs.Close();33 context.Response.OutputStream.Write(datas, 0, Convert.ToInt32(fs.Length));34 context.Response.End();35 #endregion36 }37 38 public bool IsReusable39 {40 get41 {42 return false;43 }44 }45}46 }
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HTML页面代码：
1 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "/TR/xhtml1/DTD/xhtml1-transitional.dtd">2 <html xmlns="/1999/xhtml">3 <head>4<title></title>5 </head>6 <body>7 <img src="/Imge.ashx" /> <!---图片的src指向Imge.ashx 就可以--->8 </body>9 </html>
