Cooike的一些用法

HttpCookie cookie = new HttpCookie("user");
            //给cookie赋值
            cookie.Value = "test";
            //如果多个字符赋值
            cookie["sex"] = "男";
            //或者
            cookie.Values.Add("age","30");
            //控制cookie有效日期
            cookie.Expires = DateTime.Now.AddHours(1);
            //发送cookie
            Response.AppendCookie(cookie);
            //或者
            Response.Cookies.Add(cookie);
            //读取cookie
            HttpCookie cookieRead = Request.Cookies["user"];
            //删除cookie
            cookie.Expires = DateTime.Now.AddHours(-1);
            //跨域读取cookie
            cookie.Domain = "wty.demo.com";
            cookie.Domain = "support.demo.com";