Getting username from a session ID

Question

I'm working on a .NET Service. I've implemented OnSessionChange to catch user logon and logoff. The SessionChangeDescription that it sent to OnSessionChange contains a reason (logon/logoff/lock etc) and a sessionId. I'm guessing I can use the sessionId to figure out the username, but I'm at a loss as to how.

I found one example of how to do it:

http://stackoverflow.com/questions/248186/service-needs-to-detect-if-workstation-is-locked-and-screen-saver-is-active

But instantiating a WindowsIdentity using p.Handle as shown in the example code leads to:

System.ArgumentException: Invalid token for impersonation - it cannot be duplicated.

Any ideas?

Cheers,
Rickard

Answer 1

Hi ,

Look at this link

http://forums.lhotka.net/forums/t/505.aspx 

enmanuel f grullard almonte

Republica Dominicana

Nota:SI TE FUE UTIL ESTA INFORMACION MARCALA COMO VALIDA.

Answer 2

Hmm. Forgive me, but that did link have anything particular of interest to my case?

Answer 3

hi,

 

was sorry to someone else

Answer 4

For future reference, the way I solved this was to use Cassia:

http://code.google.com/p/cassia/

Cassia is a .NET library for accessing the native Windows Terminal Services API.