Не удается перенаправить на исходную страницу после успешного входа в систему

I've changed the web.config file adding the following lines.

<system.web>
  <authorization>
    <deny users="?"/>
  </authorization>
  <authentication mode="Forms">
    <forms loginUrl="~/Account/LogIn"></forms>
  </authentication>
</system.web>


Now, whatever page's accessed, I'm being redirected to the login page. That's great and as I enter the credentials, I'd like the user to be directed back to where they started.

FormsAuthentication.RedirectFromLoginPage(uid.ToString(), false);