Public Function BeginQuery( _
   ByVal LayerOrTableID As Integer, _
   ByVal DefinitionExpression As String, _
   ByVal QueryFilter As QueryFilter, _
   ByVal ServiceDataOptions As ServiceDataOptions, _
   ByVal callback As AsyncCallback, _
   ByVal asyncState As Object _
) As IAsyncResult

Dim instance As FeatureServerProxy
Dim LayerOrTableID As Integer
Dim DefinitionExpression As String
Dim QueryFilter As QueryFilter
Dim ServiceDataOptions As ServiceDataOptions
Dim callback As AsyncCallback
Dim asyncState As Object
Dim value As IAsyncResult
 
value = instance.BeginQuery(LayerOrTableID, DefinitionExpression, QueryFilter, ServiceDataOptions, callback, asyncState)

public IAsyncResult BeginQuery( 
   int LayerOrTableID,
   string DefinitionExpression,
   QueryFilter QueryFilter,
   ServiceDataOptions ServiceDataOptions,
   AsyncCallback callback,
   object asyncState
)