DispatcherTimer and EventHandler : Dispatcher « Windows Presentation Foundation « C# / CSharp Tutorial

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C# / CSharp Tutorial » Windows Presentation Foundation » Dispatcher 
24.124.2.DispatcherTimer and EventHandler
<Window x:Class="Holding.Window2"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="FillingExample" Height="300" Width="300">
  <Canvas>
    <Ellipse Name="myEllipse" Height="100" Fill="Red">
      <Ellipse.Triggers>
        <EventTrigger RoutedEvent="Ellipse.Loaded">
          <BeginStoryboard>
            <Storyboard>
              <DoubleAnimation BeginTime="0:0:2" Duration="0:0:5"
                  Storyboard.TargetProperty="(Ellipse.Width)"
                  From="10" To="300" FillBehavior="Stop" />

            </Storyboard>
          </BeginStoryboard>
        </EventTrigger>
      </Ellipse.Triggers>
    </Ellipse>
  </Canvas>
</Window>
//File:Window.xaml.cs

using System;
using System.Windows;
using System.Windows.Threading;
using System.Diagnostics;

namespace Holding
{
    public partial class Window2 : Window
    {
        DispatcherTimer t = new DispatcherTimer();
        DateTime start;
        public Window2()
        {
            InitializeComponent();
            t.Tick += new EventHandler(OnTimerTick);
            t.Interval = TimeSpan.FromSeconds(0.5);
            t.Start();
            start = DateTime.Now;
        }
        void OnTimerTick(object sender, EventArgs e)
        {
            TimeSpan elapsedTime = DateTime.Now - start;
            Debug.WriteLine(elapsedTime.ToString() ": " + myEllipse.Width);
        }
    }
}
WPF Dispatcher Timer And Event Handler
24.124.Dispatcher
24.124.1.Unblock Thread with Dispatcher.BeginInvokeUnblock Thread with Dispatcher.BeginInvoke
24.124.2.DispatcherTimer and EventHandlerDispatcherTimer and EventHandler
24.124.3.Dispatcher.BeginInvoke with DispatcherPriority.NormalDispatcher.BeginInvoke with DispatcherPriority.Normal
24.124.4.Use DispatcherTimer to change Dependency PropertyUse DispatcherTimer to change Dependency Property
24.124.5.Dispatcher ExamplesDispatcher Examples
24.124.6.Using a DispatcherTimerUsing a DispatcherTimer
24.124.7.MailDispatcher and NotifyIconMailDispatcher and NotifyIcon
24.124.8.Using DispatcherTimer to trigger event
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