/// <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(-);

                        Response.Cookies["cp2"].Expires = DateTime.Now.AddDays(-);

                    }

                }

            }

        }

        /// <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();

                   cookie2.Expires = DateTime.Now.AddDays();

                   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");

           }

        }