简单问题,高手来捡分啦!!!
//发送Cookie
HttpCookie cookie=new HttpCookie("userName");
cookie["userName"]=username.Text.ToString();
//时间是下拉列表cook的值
int times=int.Parse(cook.SelectedValue.ToString());
cookie.Expires=DateTime.Now.AddHours(times);
Response.Cookies.Add(cookie);
问题:我要清空这个COOKIE应该怎么写?