Alternative to stopwatch?

Question

I am working on a very simple stopwatch using WPF but using the `System.Diagnostics` stopwatch was very slow and not reliable at all, compared to my system clock every 1 second from my application was 3 seconds on an actual clock. I did some search about stopwatch being slow, found lots of results but no solution to it, so I decided to come up with my own counter. Here is an sample of what I came up with: ``` System.Windows.Threading.DispatcherTimer _update; DateTime _started; bool isRunning = false; ``` The update thread: ``` _update = new System.Windows.Threading.DispatcherTimer(new TimeSpan(0, 0, 0, 0, 1), System.Windows.Threading.DispatcherPriority.Normal, delegate { if (isRunning) iTimer.Content = new DateTime((DateTime.Now - _started).Ticks).ToString("HH:mm:ss"); }, this.Dispatcher); ``` I have 2 buttons, bToggle which is resposible for starting, stopping and resuming it and another button called bReset. ``` private void bReset_Click(object sender, RoutedEventArgs e) { isRunning…

Accepted Answer

You need to intruduce an additional variable `TimeSpan accumulatedTime` in which you save the elapsed interval whenever someone clicks stop.

And:

```
iTimer.Content = (new DateTime((DateTime.Now - _started).Ticks) + accumulatedTime).ToString("HH:mm:ss");
```

Alternative to stopwatch?

Solution

Problem