<Window x:Class="Holding.Window1" 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" /> </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 Window1 : Window { DispatcherTimer t = new DispatcherTimer(); DateTime start; public Window1() { 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); } } }