Public Function BeginGetImage( _
   ByVal ImageDescription As GeoImageDescription, _
   ByVal callback As AsyncCallback, _
   ByVal asyncState As Object _
) As IAsyncResult

Dim instance As ImageServerProxy
Dim ImageDescription As GeoImageDescription
Dim callback As AsyncCallback
Dim asyncState As Object
Dim value As IAsyncResult
 
value = instance.BeginGetImage(ImageDescription, callback, asyncState)

public IAsyncResult BeginGetImage( 
   GeoImageDescription ImageDescription,
   AsyncCallback callback,
   object asyncState
)