Show current time WPF

Question

The only way to show current time updating regularly I found is to use timer. Of course, I can implement INotifyPropertyChanged and some special property to be

Answer 1

Using Task.Delay can produce an high CPU usage!

In the XAML code write this:

Next in the xaml.cs write this:

[...]
public MainWindow()
{
    InitializeComponent();
    DispatcherTimer LiveTime = new DispatcherTimer();
    LiveTime.Interval = TimeSpan.FromSeconds(1);
    LiveTime.Tick += timer_Tick;
    LiveTime.Start();
}

void timer_Tick(object sender, EventArgs e)
{
    LiveTimeLabel.Content = DateTime.Now.ToString("HH:mm:ss");
}
[...]