Display stateserver mode active session users count in GUI

Question

Hi All,
Want to display active sessions users count for stateserver session mode.session end in global asax not applicable for stateserver and tried with performance counter.nextvalue() always shows 0 .No luck.

If the session is timed out then we need to remove that user as well .
Any other easy way to capture the active sessions user count.i want to write those details in CSV file number of users session creted and number of users session abandoned.

Inproc mode works fine session start and end events.

Please help me to resolve this.

Technology VS 2010,c#.net.

Regards
Deepan