C#使用Cookie方法

 

 

 

代码



Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/--> //写入

  protected void Button1_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

  protected void Button2_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);

    }

  }

转自:http://www.cnblogs.com/kevin-top/archive/2010/07/04/1770726.html

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