Public Function BeginGetNetworkDescription( _
   ByVal NALayerName As String, _
   ByVal callback As AsyncCallback, _
   ByVal asyncState As Object _
) As IAsyncResult

Dim instance As NAServerProxy
Dim NALayerName As String
Dim callback As AsyncCallback
Dim asyncState As Object
Dim value As IAsyncResult
 
value = instance.BeginGetNetworkDescription(NALayerName, callback, asyncState)

public IAsyncResult BeginGetNetworkDescription( 
   string NALayerName,
   AsyncCallback callback,
   object asyncState
)