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An alternative to a stopwatch?

I am working on a very simple stopwatch using WPF, but the stopwatch System.Diagnosticswas very slow and not reliable at all, compared to my system clock every 1 second from my application was 3 seconds on the actual clock.

I made several searches that the stopwatch is slow, found a lot of results, but there is no solution for it, so I decided to come up with my own counter.

Here is an example of what I came up with:

System.Windows.Threading.DispatcherTimer _update;
DateTime _started;
bool isRunning = false;

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 two buttons, bToggle, which can be started, stopped and resumed, and the other button is called bReset.

private void bReset_Click(object sender, RoutedEventArgs e)
{
    isRunning = false;
    iTimer.Content = "00:00:00";
    bToggle.Content = "Start";
}

private void bToggle_Click(object sender, RoutedEventArgs e)
{
    if ((string)bToggle.Content == "Start")
    {
        isRunning = true;
        _started = DateTime.Now;
        bToggle.Content = "Stop";
    }
    else if ((string)bToggle.Content == "Resume")
    {
        isRunning = true;
        bToggle.Content = "Stop";
    }
    else
    {
        isRunning = false;
        bToggle.Content = "Resume";
    }
}

It works fine and reset, but since I use the actual time, if I stop and resume, it will skip seconds to the actual time.

, ?

+3
3

TimeSpan accumulatedTime, , - .

iTimer.Content = (new DateTime((DateTime.Now - _started).Ticks) + accumulatedTime).ToString("HH:mm:ss");
+2

System.Timers.Timer

, tickers.

:

public partial class MainWindow : Window
{
    private Timer _timer;
    private int _time;

    public MainWindow()
    {
        InitializeComponent();

        _time = 0;

        _timer = new Timer(1000);
        _timer.Elapsed += new ElapsedEventHandler(_timer_Elapsed);
    }

    void _timer_Elapsed(object sender, ElapsedEventArgs e)
    {

        Dispatcher.Invoke(new Action(() =>
                                         {
                                             _time++;
                                             tbTime.Text = _time.ToString();
                                         }));

    }

    private void btnStartStop_Click(object sender, RoutedEventArgs e)
    {
        if (_timer.Enabled)
        {
            _timer.Stop();
        }
        else
        {
            _timer.Start();
        }
    }
}

Xaml:

<Grid>
    <StackPanel>
        <Button Name="btnStartStop" Content="start/stop timer" Click="btnStartStop_Click" />
        <TextBlock Name="tbTime" Text="00:00" />
    </StackPanel>
</Grid>
+1

, :

_update = new System.Windows.Threading.DispatcherTimer(new TimeSpan(0, 0, 0, 0, 1), System.Windows.Threading.DispatcherPriority.Normal

WPF, , 1000 . , Render DataBind, , Render DataBind , iTimer.Content.

DispatcherPriority Background (, 20 - , 50 ).

0

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