I am asynchronously submitting SAS code via the COM interface. Since it seems to be documented best, let's use Visual Basic to achieve this:   Programming with Visual Basic    This documentation is somewhat rudimentary. So if you know a more detailed resource, I'd appreciate it very much to be told about it.   Anyway, here is my attempt to asynchronously submit SAS code from Visual Basic:   Option Explicit On Imports SAS Imports SASObjectManager Module Program Private WithEvents ls As LanguageService Private Sub ls_SubmitComplete(ByVal Sasrc As Long) System.Console.WriteLine("Completed." + Sasrc) End Sub Sub Main(args As String()) Dim factory As New ObjectFactory() Dim server As New ServerDef() server.Protocol = 2 server.MachineDNSName = "*** HOSTNAME ***" server.Port = 8591 Dim workspace As Workspace = factory.CreateObjectByServer("Workspace", True, server, "** USER ***", "*** PASSWORD ***") ls = workspace.LanguageService ls.Async = True ls.Submit("%put Test;") System.Threading.Thread.Sleep(10000) End Sub End Module Here, I tried to adapt the approach described in Receiving events and the more detailed but outdated LanguageService Object.   The problem is that, even though the submit completes successfully, ls_SubmitComplete is never called, i.e. the message "Completed." won't appear.   Could anyone help me how to properly receive and handle such events?   ... View more