vs2005的cookies删除

   前言：一个朋友在一个项目中提到，到底如何删除cookies.网络里也有很多人提出这样的问题。
现把我的解决方式共享一下
代码很简单，自己看看就明白
public partial class Cookies : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
       
       
    }
    protected void Button1_Click(object sender, EventArgs e)
    {
     //清除cookies
       // Request.Cookies..clear();
        //将cookies["username"]置空
        HttpCookie usercookie = Request.Cookies["username"];
      
       usercookie.Expires = System.DateTime.Now.AddDays(-10);
       // usercookie.Expires=.AddDays(-1.0);
        Response.Cookies.Add(usercookie);
    }

    protected void Button2_Click(object sender, EventArgs e)
    {
//读取cookies
        HttpCookie mycookie = Request.Cookies["username"];
      
        Response.Write(mycookie.Value);
    }
    protected void Button3_Click(object sender, EventArgs e)
    {
//写入cookies
        HttpCookie usercookie = new HttpCookie("username", "test");
        //usercookie.Expires = System.DateTime.Now.AddMinutes(1);
        usercookie.Expires = System.DateTime.Now.AddDays(1);
        Response.Cookies.Add(usercookie);
    }
}

综上所述，其实方法就是将时间改为失效时间点