C# 一般处理程序下载文件

using System;

using System.Collections;

using System.Data;

using System.Linq;

using System.Web;

using System.Web.Services;

using System.Web.Services.Protocols;

using System.Xml.Linq;

namespace test

{

    /// <summary>

    /// $codebehindclassname$ 的摘要说明

    /// </summary>

    [WebService(Namespace = "http://tempuri.org/")]

    [WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]

    public class Handler1 : IHttpHandler

    {

        public void ProcessRequest(HttpContext context)

        {

            context.Response.ContentType = "text/plain";

            string loadname = context.Request["loadname"];

            string curBrowser = context.Request.Browser.Type.ToLower();

            string path = "/resource/" + loadname;

            //对ie和chrome需要设置url编码

            if (curBrowser.Contains("internetexplorer") || curBrowser.Contains("chrome"))

            {

                loadname = HttpUtility.UrlEncode(loadname);

            }

            //设置消息头

            context.Response.AddHeader("Content-Disposition", "attachmen;filename=" + loadname);

            //下载文件

            context.Response.WriteFile(path);

        }

        public bool IsReusable

        {

            get

            {

                return false;

            }

        }

    }

}