title: Return URL concept in ASP.NET
body: <p>My requirement is this. whenever i would not be login in my site then never access a web page. but the url added after the login page url means (return url) and after successful login into my site the page redirect to same page which i have to access and entered into address bar.</p>
  
  <p>Example: i have to access page <strong>http://localhost:14334/User/userdetail.aspx</strong> without login. the page returns to me on <strong>http://localhost:14334/Login.aspx</strong>. but i want that the page returns to me on <strong>http://localhost:14334/Login.aspx?ReturnUrl=%2fUser%2fuserdetail.aspx</strong></p>