解决客户端缓存问题 and 一般处理文件里 使用session

Response.Cache.SetCacheability(HttpCacheability.NoCache);
        这一行的代码可以让客户端不使用缓存，而从服务器重新读取

 

 

 

//

<%@ WebHandler Language="C#" Class="reg" %>

using System;
using System.Web;
using System.Web.UI;
using System.Web.SessionState;

public class reg : IHttpHandler, IRequiresSessionState
{
   
    public void ProcessRequest (HttpContext context) {
        context.Response.ContentType = "text/plain";
        context.Response.Cache.SetCacheability(HttpCacheability.NoCache);
        string strcode = context.Request.Cookies["CheckCode"].Value;
        //string strcode = "";
        //if (context.Session["CheckCode"] != null)
        //{
        //    context.Response.Cache.SetCacheability(HttpCacheability.NoCache);
        //    strcode = context.Session["CheckCode"].ToString();
        //}
       
        context.Response.Write(strcode);
    }
 
    public bool IsReusable {
        get {
            return false;
        }
    }

}