protected void Login1_Authenticate(object sender, AuthenticateEventArgs e)
    {
        if (Login1.UserName.Contains("@")) //Email Login
        {
            string username = Membership.GetUserNameByEmail(Login1.UserName );
            if (username != null)
            {
                if (Membership.ValidateUser(username, Login1.Password))
                {
                    Login1.UserName = username;
                    e.Authenticated = true;
                }
                else e.Authenticated = false;
            }
        }
        else  //Standard Username & Password Login
        {
                if(Membership.ValidateUser(Login1.UserName, Login1.Password)) e.Authenticated = true;
                else e.Authenticated = false;
        }
    }

protected void Button1_Click(object sender, EventArgs e)
    {
     
        MembershipUser newuser = Membership.CreateUser(TBlogin.Text, TBpass.Text, TBmail.Text);

        MembershipCreateStatus createStatus = MembershipCreateStatus.Success;
      }

protected void BTNCreateUser_Click(object sender, EventArgs e)
    {
        MembershipCreateStatus createStatus;
        MembershipUser newUser = Membership.CreateUser(TBUserName.Text, TBPassword.Text, TBUserEmail.Text, "What is your favorite color?", TBColor.Text, true, out createStatus);

        switch (createStatus)
        {
            case MembershipCreateStatus.Success:
                LabelCreateAccountResults.Text = "The user account was successfully created!";
                break;
            case MembershipCreateStatus.DuplicateUserName:
                LabelCreateAccountResults.Text = "That username already exists.";
                break;
            case MembershipCreateStatus.DuplicateEmail:
                LabelCreateAccountResults.Text = "A user with that Email address already exists.";
                break;
            case MembershipCreateStatus.InvalidEmail:
                LabelCreateAccountResults.Text = "PLease enter a VALID email address.";
                break;
            case MembershipCreateStatus.InvalidAnswer:
                LabelCreateAccountResults.Text = "The security answer is not valid";
                break;
            case MembershipCreateStatus.InvalidPassword:
                LabelCreateAccountResults.Text = "The password entered is invalid. PLease enter a passoword with at least 7 cahacters and one non-alphanumeric.";
                break;
            default:
                LabelCreateAccountResults.Text = "Unknown Error: Account NOT created.";
                break;

        } 

    }