.net cookie

cookie是分2种的

1,是临时cookie(关闭浏览器就丢失)

HttpCookie mycookie = new HttpCookie("username");
            mycookie.Value = Request.Cookies["username"].Value.ToString();
            mycookie.Domain = "xxx.xxx.com";
            Response.Cookies.Add(mycookie);

2,是定制了时间的cookie(你懂的~哈哈!)

HttpCookie mycookie = new HttpCookie("username");
            mycookie.Value = Request.Cookies["username"].Value.ToString();
            mycookie.Domain = "xxx.xxx.com";
            mycookie.Expires = DateTime.Now.AddDays(1);
            Response.Cookies.Add(mycookie);

分别就是你是否有定制时间