asp mvc 清除 删除 cookie

Request.Cookies.Remove("user"); 这样都删不了

原因是此cookie设置了 cookie.Domain = ".shi.com";

必须指定到所设置的域才能删除，例如：

var c = new HttpCookie("user");

c.Expires = DateTime.Now.AddDays(-1);
c.Domain = ".shi.com";

Response.Cookies.Add(c);