c# - TPL does not start task -


i following:

private void ontimedevent(object sender, elapsedeventargs e)     {         tokensource.cancel();         receivedatatimer.stop();         console.writeline("timer done");     }  private void eventdatareceived(message msg)     {        dataque.enqueue(msg.data);        var context = new dispatchersynchronizationcontext(application.current.dispatcher);              if(receivedatatimer.enabled==false)             {                 console.writeline("start task");                 tokensource = new cancellationtokensource();                  task.factory.startnew(() => work(tokensource.token, maxpoints), tokensource.token);                 task.factory.startnew(() => update(context, tokensource.token), tokensource.token);                              receivedatatimer.start();             }             else             {                 receivedatatimer.interval=3000;             }      }

basically, there timer sets token cancel 2 tasks. after while timer restarted , 2 tasks should started again. don't.

can tell me why? both start first time running application.

i added more code now. when data received serial port, eventdatareceived called. debugged , timer should.

data received -> start task -> start timer -> (if 3s no data received) stop tasks -> (if data received) restart task , timer.

but tasks not start again.


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