There are two possible session IDs. When a new form is created, a local client session ID is created. This a unique ID that will live with the life of the form. You can get to this ID through the SessionData Class. This ID can be accessed in Datapath filenames and the Descriptor using [SESSIONID]; and can be accessed in script using 

 

  Dim localID As String

  Dim sd As SessionData = _form.SessionData(0)

  localID = sd.SessionID

 

A server-side session ID, ServerSesssionID, is also created when the form is sent to the server. If you need this, you could create a hidden field and then set that field via the ServerQueuing event that is triggered as the form is sent to the server. This is not a permanent ID, as it does change every time it syncs with the server. A possible solution would be:

<MiCode(FormScriptEventType.ServerQueuing)> _

Public Sub Form_ServerQueuing(ByVal e As ServerQueuingEventArgs)

   _Hidden.Value = e.ServerSessionID

End Sub

In summary, if you need to both IDs, it may be best to combine both of these solutions into something like:

 

<MiCode(FormScriptEventType.ServerQueuing)> _

Public Sub Form_ServerQueuing(ByVal e As ServerQueuingEventArgs)

   _Hidden.Value = e.ServerSessionID

End Sub

 

<MiCode(FormScriptEventType.AfterDataPathsRun)> _

Public Sub Form_AfterDataPathsRun(ByVal e As AfterDataPathsRunEventArgs)

   Dim localID As String

   Dim serverID As String

 

   If _form.SessionData.Count > 0 Then

       Dim sd As SessionData = _form.SessionData(0)

       localID = sd.SessionID

   End If

 

   serverID = _Hidden.Value

End Sub