c# - How to get Notification when "switch User" happen in window7 -

i building window application in c# notify me when switch user happen. right m using "sessionswitch" event notification.

private void startlisning() {         microsoft.win32.systemevents.sessionswitch +=new microsoft.win32.sessionswitcheventhandler(systemevents_sessionswitch);         this.eventhandlercreated = true; }  private void systemevents_sessionswitch(object sender, eventargs e) {         system.io.file.appendalltext(path.combine(environment.getfolderpath(environment.specialfolder.applicationdata), "testtest.txt"), "switchuser\t" + datetime.now.tostring() + environment.newline);   } 

but in case sending notification when "unlock" happen . don't want. need when user switch user in system application should notification , log log file. should log when lock or switchuser happen.

thanks in advance.

   private void form1_load(object sender, eventargs e)     {         startlisning();     }     private bool eventhandlercreated;      private void startlisning()     {         microsoft.win32.systemevents.sessionswitch +=new microsoft.win32.sessionswitcheventhandler(systemevents_sessionswitch);         systemevents.sessionswitch += new sessionswitcheventhandler(systemevents_sessionswitch1);          this.eventhandlercreated = true;     }       private void systemevents_sessionswitch1(object sender, sessionswitcheventargs e)     {         switch (e.reason)         {             case sessionswitchreason.sessionlock:                 system.io.file.appendalltext(path.combine(environment.getfolderpath(environment.specialfolder.applicationdata), "testtest.txt"), "lock\t" + datetime.now.tostring() + environment.newline);                 break;             case sessionswitchreason.sessionlogon:                 system.io.file.appendalltext(path.combine(environment.getfolderpath(environment.specialfolder.applicationdata), "testtest.txt"), "login\t" + datetime.now.tostring() + environment.newline);                 break;             case sessionswitchreason.sessionunlock:                 system.io.file.appendalltext(path.combine(environment.getfolderpath(environment.specialfolder.applicationdata), "testtest.txt"), "unlock\t" + datetime.now.tostring() + environment.newline);                 break;             case sessionswitchreason.consoleconnect:                 system.io.file.appendalltext(path.combine(environment.getfolderpath(environment.specialfolder.applicationdata), "testtest.txt"), "unlockafetswitchuser\t" + datetime.now.tostring() + environment.newline);                 break;             case sessionswitchreason.consoledisconnect:                 system.io.file.appendalltext(path.combine(environment.getfolderpath(environment.specialfolder.applicationdata), "testtest.txt"), "switchuser\t" + datetime.now.tostring() + environment.newline);                  break;         }      } 

this notify when "switch user" happen , notify when "user resume" . 'sessionswitchreason.consoledisconnect' event fire when switch user happen . code tested in windows7 , working fine.

this code create "testtest.txt" log file in appdata folder. u can reach there using window+r , search '%appdata%'.

it log notification below : 1. login datetime 2. lock datetime 3. unlock datetime 4. switch user datetime 5. switch user resume datetime