1、登录cookie建立Response.Cookies.Add(new HttpCookie(AuthName, realName){ Expires DateTime.Now.AddDays(1) });HttpCookie nameCookie Request.Cookies[AuthName];// 创建认证CookieHttpCookie authCookie new HttpCookie(AuthUser);authCookie.Value username;authCookie.Expires DateTime.Now.AddDays(1); // 1天有效期Response.Cookies.Add(authCookie);2、登录cookie读取建立HttpCookie nameCookie Request.Cookies[AuthName];((Label)Master.FindControl(lblUsername)).Text Server.UrlDecode(nameCookie.Value);