c# - dispatcherTimer doesn't work accurately

Question

I need to capture 10 frames per second of a live camera for 15 min. I used dispatcherTimer class but seems it doesn't work accurately. How to make it accurate? I even don't save the image because it is time consuming and i just keep it in the memory but still it doesn't work correctly. should I use another library?

counter01 = new DispatcherTimer();
counter01.Tick += new EventHandler(counter01_Tick);
counter01.Interval = new TimeSpan(0, 0, 0,100); // every 100 milliseconds == 10 frames per seconds

Answer 1

MSDN states that:

Timers are not guaranteed to execute exactly when the time interval occurs, but they are guaranteed to not execute before the time interval occurs.

You can check StopWatch, it might help you.