Public Function BeginComputeScale( _
   ByVal MapDescription As MapDescription, _
   ByVal MapImageDisplay As ImageDisplay, _
   ByVal callback As AsyncCallback, _
   ByVal asyncState As Object _
) As IAsyncResult

Dim instance As MapServerProxy
Dim MapDescription As MapDescription
Dim MapImageDisplay As ImageDisplay
Dim callback As AsyncCallback
Dim asyncState As Object
Dim value As IAsyncResult
 
value = instance.BeginComputeScale(MapDescription, MapImageDisplay, callback, asyncState)

public IAsyncResult BeginComputeScale( 
   MapDescription MapDescription,
   ImageDisplay MapImageDisplay,
   AsyncCallback callback,
   object asyncState
)