DispatcherTimer and EventHandler : Event « Windows Presentation Foundation « VB.Net

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VB.Net » Windows Presentation Foundation » EventScreenshots 
DispatcherTimer and EventHandler
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.vb

Imports System
Imports System.Windows
Imports System.Windows.Threading
Imports System.Diagnostics

Namespace Holding
  Public Partial Class Window2
    Inherits Window
    Private As New DispatcherTimer()
    Private start As DateTime
    Public Sub New()
      InitializeComponent()
      AddHandler t.Tick, New EventHandler(AddressOf OnTimerTick)
      t.Interval = TimeSpan.FromSeconds(0.5)
      t.Start()
      start = DateTime.Now
    End Sub
    Private Sub OnTimerTick(sender As Object, e As EventArgs)
      Dim elapsedTime As TimeSpan = DateTime.Now - start
      Debug.WriteLine((elapsedTime.ToString() ": "+ myEllipse.Width)
    End Sub
  End Class
End Namespace

   
    
    
    
    
  
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