Public Function BeginGetMapName( _
   ByVal Index As Integer, _
   ByVal callback As AsyncCallback, _
   ByVal asyncState As Object _
) As IAsyncResult

Dim instance As MapServerProxy
Dim Index As Integer
Dim callback As AsyncCallback
Dim asyncState As Object
Dim value As IAsyncResult
 
value = instance.BeginGetMapName(Index, callback, asyncState)

public IAsyncResult BeginGetMapName( 
   int Index,
   AsyncCallback callback,
   object asyncState
)