很奇怪的事情，只是发现了，但不明白为什么！
Handler
1<%@ WebHandler Language="C#" Class="Handler" %> 2 3using System; 4using System.IO; 5using System.Web; 6 7public class Handler : IHttpHandler { 8 9 public bool IsReusable {10 get {11 return true;12 }13 }14 15 public void ProcessRequest (HttpContext context) {16 // Set up the response settings17 context.Response.ContentType = "image/jpeg";18 context.Response.Cache.SetCacheability(HttpCacheability.Public);19 context.Response.BufferOutput = false;20 // Setup the Size Parameter21 PhotoSize size;22 switch (context.Request.QueryString["Size"]) {23 case "S":24 size = PhotoSize.Small;25 break;26 case "M":27 size = PhotoSize.Medium;28 break;29 case "L":30 size = PhotoSize.Large;31 break;32 default:33 size = PhotoSize.Original;34 break;35 } 36 // Setup the PhotoID Parameter37 Int32 id = -1;38 Stream stream = null;39 if (context.Request.QueryString["PhotoID"] != null && context.Request.QueryString["PhotoID"] != "") {40 id = Convert.ToInt32(context.Request.QueryString["PhotoID"]);41 stream = PhotoManager.GetPhoto(id, size);42 } else {43 id = Convert.ToInt32(context.Request.QueryString["AlbumID"]);44 stream = PhotoManager.GetFirstPhoto(id, size);45 }46 // Get the photo from the database, if nothing is returned, get the default "placeholder" photo47 if (stream == null) stream = PhotoManager.GetPhoto(size);48 // Write image stream to the response stream49 const int buffersize = 1024 * 16;50 byte[] buffer = new byte[buffersize];51 int count = stream.Read(buffer, 0, buffersize);52 while (count > 0) {53 context.Response.OutputStream.Write(buffer, 0, count);54 count = stream.Read(buffer, 0, buffersize);55 }56 }5758}
据说是能以流的方式直接读取存在数据库中的图片。
转载于:https://www.cnblogs.com/nanshouyong326/archive/2007/07/10/812714.html
相关资源：ASP,NET 网站开发项目化教程第11讲.ppt
