/// <summary>        /// 判断Cookie中存储的数据        /// </summary>        protected void CheckUserCookie()        {            //先判断Cookie是否有值            if (Request.Cookies["cp1"] != null && Request.Cookies["cp2"] != null)            {                //校验数据是否正确.                string cookieUserName = Request.Cookies["cp1"].Value;                string cookieUserPwd=Request.Cookies["cp2"].Value;                BLL.UserManager bll = new BLL.UserManager();                Model.User model=bll.GetModel(cookieUserName);//根据Cookie中存储的用户名找用户                if (model != null)                {                    //判断密码是否正确.                    //如果注册时，采用相同的加密方式，那么这里再比较时直接比较                    if (Enctry(model.LoginPwd) == cookieUserPwd)                    {                        Session["UserInfo"] = model;                        GoPage("登录成功");                    }                    else//表示密码错误,删除Cookie                    {                        Response.Cookies["cp1"].Expires = DateTime.Now.AddDays(-1);                        Response.Cookies["cp2"].Expires = DateTime.Now.AddDays(-1);                    }                }            }        }        /// <summary>        /// 校验用户登录信息        /// </summary>        protected void CheckUserLogin()        {            string txtName=Request.Form["txtName"];            string txtPwd=Request.Form["txtPwd"];            BLL.UserManager bll = new BLL.UserManager();            string msg = string.Empty;            Model.User model = null;            //校验用户名密码           bool b= bll.UserLogin(txtName, txtPwd,out msg,out model);           if (b)           {               Session["UserInfo"] = model;               //如果选择了记住我复选框，将用户的信息写到Cookie。               if (!string.IsNullOrEmpty(Request.Form["checkMe"]))               {                   HttpCookie cookie1 = new HttpCookie("cp1", model.LoginId);                   HttpCookie cookie2 = new HttpCookie("cp2",Enctry(model.LoginPwd));                   cookie1.Expires = DateTime.Now.AddDays(3);                   cookie2.Expires = DateTime.Now.AddDays(3);                   Response.Cookies.Add(cookie1);                   Response.Cookies.Add(cookie2);               }               GoPage(msg);                     }           else           {               Response.Redirect("/ShowMsg.aspx?msg=" + Server.UrlEncode(msg) + "&txt=" + Server.UrlEncode("登录页") + "&url=/Login.aspx");           }        }