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asp.net cookies 读取、写入、修改、删除

2013年08月20日 ⁄ 综合 ⁄ 共 1965字 ⁄ 字号 评论关闭

写入cookie:

 protected void Button2_Click(object sender, EventArgs e)     

      {   

          HttpCookie cookie=new HttpCookie("MyCook");//初使化并设置Cookie的名称   

          DateTime dt=DateTime.Now;     

          TimeSpan ts = new TimeSpan(0, 0, 1,0,0);//过期时间为1分钟    

          cookie.Expires = dt.Add(ts);//设置过期时间    

          cookie.Values.Add("userid", "userid_value");     

          cookie.Values.Add("userid2","userid2_value2");    

          Response.AppendCookie(cookie);    

        //输出该Cookie的所有内容    

        //Response.Write(cookie.Value); //输出为:userid=userid_value&userid2=userid2_value2     

      }  

读取cookie:

protected void Button1_Click(object sender, EventArgs e)     

  {     
   // HttpCookie cokie = new HttpCookie("MyCook");//初使化    

    if (Request.Cookies["MyCook"]!=null)     
      {     

        //Response.Write("Cookie中键值为userid的值:" + Request.Cookies["MyCook"]["userid"]);//整行     

        //Response.Write("Cookie中键值为userid2的值" + Request.Cookies["MyCook"]["userid2"]);   

          Response.Write(Request.Cookies["MyCook"].Value);//输出全部的值     

      }    

  }  

 

修改cookie:

protected void Button3_Click(object sender, EventArgs e)   
   {     
     //获取客户端的Cookie对象   
       HttpCookie cok = Request.Cookies["MyCook"];    
     if (cok != null)     
       {     
      //修改Cookie的两种方法    
           cok.Values["userid"] = "alter-value";   

           cok.Values.Set("userid", "alter-value");   
       //往Cookie里加入新的内容                cok.Values.Set("newid", "newValue");     
            Response.AppendCookie(cok);     
       }     
   } 

 

删除cookie:

protected void Button4_Click(object sender, EventArgs e)     

  {    

      HttpCookie cok = Request.Cookies["MyCook"];         if (cok != null)     
      {     
        if (!CheckBox1.Checked)     
          {     
              cok.Values.Remove("userid");//移除键值为userid的值               }       

      else              

         {     
              TimeSpan ts = new TimeSpan(-1, 0, 0, 0);    
              cok.Expires = DateTime.Now.Add(ts);//删除整个Cookie,只要把过期时间设置为现在    
          }     
          Response.AppendCookie(cok);   
      }     
  } 

 

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