GetComPlusAppRoles - Retrieving a COM+ Application's roles

' Get an array with the name of an application's roles
' Note: requires a reference to the COM+ Admin Type Library
'
' Example:
'    Dim roles() As String = GetComPlusAppRoles("System Application", "")
'    Dim role As String
'    For Each role In  roles
'       Console.WriteLine(role)
'    Next

Function GetComPlusAppRoles(ByVal applicationName As String, _
    ByVal serverName As String) As String()
    Dim catalog As New COMAdmin.COMAdminCatalog
    catalog.Connect(serverName)
    ' get the Applications collection
    Dim apps As COMAdmin.COMAdminCatalogCollection = CType _
        (catalog.GetCollection("Applications"), _
        COMAdmin.COMAdminCatalogCollection)
    apps.Populate()
    Dim AppObj As COMAdmin.COMAdminCatalogObject
    For Each AppObj In apps
        If applicationName = AppObj.Name.ToString() Then
            Dim roles As COMAdmin.COMAdminCatalogCollection = CType _
                (apps.GetCollection("Roles", AppObj.Key), _
                COMAdmin.COMAdminCatalogCollection)
            roles.Populate()
            ' add each application name to an ArrayList
            Dim roleNames(roles.Count) As String
            Dim i As Integer
            For i = 0 To roles.Count - 1
                roleNames(i) = CType(roles.Item(i), _
                    COMAdmin.COMAdminCatalogObject).Name.ToString()
            Next i
            Return roleNames
        End If ' convert from the ArrayList to an array of strings,
               '  and return it
    Next AppObj
    Return New String(1) {}
End Function