download.ashx

对web开发很有帮助的

<% @ webhandler language="C#" class="DownloadHandler" %> 

using System; 
using System.Web; 
using System.IO;
using A2KWebServerSample;

public class DownloadHandler : IHttpHandler 
{ 
	public bool IsReusable 
	{
		get
		{
			return true;
		}
	}
 
	public void ProcessRequest(HttpContext ctx) 
	{ 
		string strPath = ctx.Server.MapPath("../doc/template.doc");
		
		ctx.Response.ContentType = Common.GetContentTypeByFileName(strPath);
		ctx.Response.WriteFile(strPath); 
	} 
}