WPF C# Tutorial

    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="FillingExample" Height="300" Width="300">
  
    
      
        
          
            
                                Storyboard.TargetProperty="(Ellipse.Width)"
                  From="10" To="300" FillBehavior="Stop" />
            

          

        
      

    
  


//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);
        }
    }
}