懂MVC3的进！
想做这种效果！
当用户从新登陆 或者因为cookie过期了 从新登陆后需要回到原来的页面
    但目前的代码是  当登陆过程中有过错误(密码或者用户名错误再次点击登陆)  就返回不到原来的页面了 。
View:Logon.cshtml

@using (Html.BeginForm("LogOn", "Account", new { Request.ServerVariables["http_referer"] }, FormMethod.Post))

    {...

Controller中的Logon Action:

[HttpPost]

        public ActionResult Logon(LogonInfo model, string returnUrl)

        {

                string[] loginResult;

  

                if (!string.IsNullOrEmpty(model.UserID) && !string.IsNullOrEmpty(model.Password))

                {

                    // 验证登陆

                    if (this.TryLogin(model.UserID, model.Password, out loginResult))

                    {

                        //model.UserName = string.Empty;

                        //Response.Cookies.Remove(model.UserID);

                        Response.Cookies.Remove(model.UserID);

                        ...

                        //其他操作.....

                        // 记住登陆状态

                        FormsAuthentication.SetAuthCookie(model.UserID, model.RememberMe);

  

                        if (Url.IsLocalUrl(returnUrl) && returnUrl.Length > 1 && returnUrl.StartsWith("/")

                        && !returnUrl.StartsWith("//") && !returnUrl.StartsWith("/\\"))

                        {

                            return Redirect(returnUrl);

                        }