Having an issue migrating from Visual Studio 2003 to 2005 and using asp.net 2.0 to validate local users. Code was the same as before and was working correctly except now I get an exception on the line results = mySearcher.FindAll(). Just wondering if LDAP is changed and if the below code is incorrect, searched various places and cannot find a solution yet. Any help appreciated.

Public Function GetUserFullName(ByVal username As String) As String
            Dim entry As New DirectoryEntry("LDAP://NETADDRESS")
     Dim mySearcher As New DirectorySearcher(entry)
            'Dim result As SearchResult
            mySearcher.Filter = ("(&(objectClass=user)(SAMAccountName=" & username & "))")
            Dim results As SearchResultCollection
            results = mySearcher.FindAll()
            Select Case results.Count
                Case 0
                    Return "False"
                Case 1
                    Dim Name() As String = Split(results(0).GetDirectoryEntry().Name, "=")
                    Return Name(1)
                Case Is > 1
                    'Return "Multiple"
                    Dim Name() As String = Split(results(0).GetDirectoryEntry().Name, "=")
                    Return Name(1)
            End Select
            Return Nothing
        End Function