<Window xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:src="clr-namespace:MyNameSpace.DigitalClock"
Title="Digital Clock"
SizeToContent="WidthAndHeight">
<Window.Resources>
<src:ClockTicker1 x:Key="clock" />
</Window.Resources>
<Window.Content>
<Binding Source="{StaticResource clock}" Path="DateTime" />
</Window.Content>
</Window>
//File:Window.xaml.cs
using System;
using System.Windows;
using System.Windows.Threading;
namespace MyNameSpace.DigitalClock
{
public class ClockTicker1 : DependencyObject
{
public static DependencyProperty DateTimeProperty =
DependencyProperty.Register("DateTime", typeof(DateTime),
typeof(ClockTicker1));
public DateTime DateTime
{
set { SetValue(DateTimeProperty, value); }
get { return (DateTime) GetValue(DateTimeProperty); }
}
public ClockTicker1()
{
DispatcherTimer timer = new DispatcherTimer();
timer.Tick += TimerOnTick;
timer.Interval = TimeSpan.FromSeconds(1);
timer.Start();
}
void TimerOnTick(object sender, EventArgs args)
{
DateTime = DateTime.Now;
}
}
}
