<UserControl x:Class='SilverlightApplication3.MainPage'
xmlns='http://schemas.microsoft.com/winfx/2006/xaml/presentation'
xmlns:x='http://schemas.microsoft.com/winfx/2006/xaml'
xmlns:d='http://schemas.microsoft.com/expression/blend/2008'
xmlns:mc='http://schemas.openxmlformats.org/markup-compatibility/2006'
mc:Ignorable='d'
d:DesignWidth='640'
d:DesignHeight='480'>
<Grid x:Name="LayoutRoot" Background="Black">
<TextBlock x:Name="myText"/>
<Button x:Name="myButton" Content="Start Clock"
VerticalAlignment="Bottom"/>
</Grid>
</UserControl>
//File: Page.xaml.cs
using System;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Threading;
namespace SilverlightApplication3
{
public partial class MainPage : UserControl
{
DispatcherTimer timer;
bool isTicking;
public MainPage()
{
InitializeComponent();
isTicking = false;
timer = new DispatcherTimer();
timer.Interval = new TimeSpan(0, 0, 0, 1, 0); // 1 Second
timer.Tick += new EventHandler(UpdateClock);
myButton.Click += new RoutedEventHandler(StartClock);
}
public void StartClock(object o, RoutedEventArgs sender)
{
if (isTicking)
{
myButton.Content = "Start Clock";
timer.Stop();
isTicking = false;
}
else
{
myButton.Content = "Stop Clock";
timer.Start();
isTicking = true;
}
}
public void UpdateClock(object o, EventArgs sender)
{
this.myText.Text = String.Format("{0:T}", DateTime.Now);
}
}
}
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