Public Function BeginGetPixelBlock( _
   ByVal RID As Integer, _
   ByVal Tx As Integer, _
   ByVal Ty As Integer, _
   ByVal Level As Integer, _
   ByVal callback As AsyncCallback, _
   ByVal asyncState As Object _
) As IAsyncResult

Dim instance As ImageServerProxy
Dim RID As Integer
Dim Tx As Integer
Dim Ty As Integer
Dim Level As Integer
Dim callback As AsyncCallback
Dim asyncState As Object
Dim value As IAsyncResult
 
value = instance.BeginGetPixelBlock(RID, Tx, Ty, Level, callback, asyncState)

public IAsyncResult BeginGetPixelBlock( 
   int RID,
   int Tx,
   int Ty,
   int Level,
   AsyncCallback callback,
   object asyncState
)