Redirect to actionmethod/view - asp.net-mvc

Question

I have implemented idel time out functionality. Here when the user is idel for 1 min, we redirect the user to login page. We have kept the track of the url that the user was when the auto logout happened. Eg , of the user is on reset password view and if the auto logout happens the url which i get is as follows
http://localhost/XYZ.Portal/?returnUrl=%2FXYZ.Portal%2FUser%2FResetPassword
the above url is achieved by using the following code
'#Url.Action("Login", "User", new { returnUrl = HttpContext.Current.Request.RawUrl })'
Now when the user logs in again as he is redirected to login page, I am using the following code to redirect him back but the code doesnt seem to work. What am I doing wrong.?
[HttpPost]
public ActionResult Login(FormCollection formCollection)
{
if (ModelState.IsValid)
{
UserBE user = new UserBE();
user.Email = formCollection["Email"];
user.Password = formCollection["Password"];
user = UserBL.AuthenticateUser(user);
if (user.AuthenticUser)
{
if (Request.QueryString["returnUrl"] != null)
{
string returnUrl = Server.UrlDecode(Request.QueryString["returnUrl"]);
Redirect(returnUrl );
}
else
{
Session["Email"] = user.Email;
return RedirectToAction("DashBoard");
}
}
else
return View(user);
}
return View();
}
[HttpGet] login action method:
[HttpGet]
public ActionResult Login()
{
return View();
}
returnUrl I get as XYZ.Portal/User/ResetPassword
Thanks In advance.

Answer 1

You need to return the RedirectResult:
if (Request.QueryString["returnUrl"] != null)
{
string returnUrl = Server.UrlDecode(Request.QueryString["returnUrl"]);
return Redirect(returnUrl);
}
See RedirectResult

Answer 2

Not working. Now my URL becomes localhost/XYZ.Portal
In this case you can do 1 of 2 options:
1) Write:
string startReturnUrl = "http://www." + your returnUrl
or
2) split your returnUrl like:
string viewName = returnUrl.Split('/').Last();
But I think better change returnUrl to just only Name of View that you need