I'm using the following code to send an email verification link (from the security tutorials). How would I modify the code below so that if the user has already clicke the verification link, it will display "account already verified" and redirect them to the login page?
using System;
using System.Web.Security;
public partial class Verification : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{ Go to the complete details ...