DispatcherTimer

毎回、面倒なので。

using System.Windows.Threading;

DispatcherTimer timer = new DispatcherTimer();

private void ContentPanel_Loaded(object sender, RoutedEventArgs e)
{
    timer.Interval = new TimeSpan(0, 0, 1);
    timer.Tick += new EventHandler(timer_Tick);
    timer.Start();
}

void timer_Tick(object sender, EventArgs e)
{
    …
}