When I use Response.Redirect() or Server.Transfer() my user gets logged out

Question

I'm using #4 on this tutorial to do authentication.

If I login, and then manually navigate to the page I need I do not get logged out. However, if I use Response.Redirect() or Server.Transfer() my user is instantly logged out.

Here is my code

protected void  Login1_Authenticate(object sender, System.Web.UI.WebControls.AuthenticateEventArgs e)
{
    string userName = Login1.UserName;
    string password = Login1.Password;

    bool result = UserLogin(userName, password); // This method executes SQL on my own database and returns true if the username and password work
    if ((result))
    {
        e.Authenticated = true;

        // Redirect users to some page
        Response.Redirect("/home.aspx"); // THIS CAUSES A LOGOUT
    }
    else
    {
        e.Authenticated = false;
    }
}

Answer 1

The problem here is that Response.Redirect immediately cancels all remaining code in the current page flow so the code that would normally use the Authenticated flag to indicate the user is authenticated is never executed.

If you are using the Login control, you can use the DestinationPageURL property in the control to automatically redirect to the Home.aspx page.