If I log in different membership provider, and go to page that contains following code, I get NullReferenceException error. User will be authenticated even if I loggin to different membership.
Is there any ways to prevent from getting error??
If User.Identity.IsAuthenticated Then
Dim UserIdentity As MembershipUser = Membership.Providers("CustMembershipProvider").GetUser(HttpContext.Current.User.Identity.Name, False)
Dim currentUserID As String = UserIdentity.ProviderUserKey.ToString()