Public Overloads Sub DownloadAsync( _
   ByVal FIDs As FIDSet, _
   ByVal Geometry As Geometry, _
   ByVal Format As String, _
   ByVal userState As Object _
) 

Dim instance As ImageServerProxy
Dim FIDs As FIDSet
Dim Geometry As Geometry
Dim Format As String
Dim userState As Object
 
instance.DownloadAsync(FIDs, Geometry, Format, userState)

public void DownloadAsync( 
   FIDSet FIDs,
   Geometry Geometry,
   string Format,
   object userState
)