Public Overloads Sub QueryFeatureDataAsync( _
   ByVal MapName As String, _
   ByVal LayerID As Integer, _
   ByVal QueryFilter As QueryFilter, _
   ByVal userState As Object _
) 

Dim instance As MapServerProxy
Dim MapName As String
Dim LayerID As Integer
Dim QueryFilter As QueryFilter
Dim userState As Object
 
instance.QueryFeatureDataAsync(MapName, LayerID, QueryFilter, userState)

public void QueryFeatureDataAsync( 
   string MapName,
   int LayerID,
   QueryFilter QueryFilter,
   object userState
)