Public Function BeginQueryFeatureData2( _
   ByVal MapName As String, _
   ByVal LayerDescription As LayerDescription, _
   ByVal QueryFilter As QueryFilter, _
   ByVal QueryResultOptions As QueryResultOptions, _
   ByVal callback As AsyncCallback, _
   ByVal asyncState As Object _
) As IAsyncResult

Dim instance As MapServerProxy
Dim MapName As String
Dim LayerDescription As LayerDescription
Dim QueryFilter As QueryFilter
Dim QueryResultOptions As QueryResultOptions
Dim callback As AsyncCallback
Dim asyncState As Object
Dim value As IAsyncResult
 
value = instance.BeginQueryFeatureData2(MapName, LayerDescription, QueryFilter, QueryResultOptions, callback, asyncState)

public IAsyncResult BeginQueryFeatureData2( 
   string MapName,
   LayerDescription LayerDescription,
   QueryFilter QueryFilter,
   QueryResultOptions QueryResultOptions,
   AsyncCallback callback,
   object asyncState
)