Stop, resume animation with Storyboard : Animation « Windows Presentation Foundation « VB.Net

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VB.Net » Windows Presentation Foundation » AnimationScreenshots 
Stop, resume animation with Storyboard
Stop, resume animation with Storyboard
    

<Window
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    x:Class="WpfApplication1.Window1"
    Title="Color Spinner" Height="370" Width="270" >
    <Window.Resources>
        <Storyboard x:Key="Spin">
            <DoubleAnimationUsingKeyFrames BeginTime="00:00:00" Storyboard.TargetName="ellipse1" Storyboard.TargetProperty="(UIElement.RenderTransform).(TransformGroup.Children)[0].(RotateTransform.Angle)" RepeatBehavior="Forever">
                <SplineDoubleKeyFrame KeyTime="00:00:10" Value="360"/>
            </DoubleAnimationUsingKeyFrames>
        </Storyboard>
    </Window.Resources>
    <Window.Triggers>
        <EventTrigger RoutedEvent="FrameworkElement.Loaded">
            <BeginStoryboard Storyboard="{StaticResource Spin}" x:Name="Spin_BeginStoryboard"/>
        </EventTrigger>
        <EventTrigger RoutedEvent="ButtonBase.Click" SourceName="goButton">
            <ResumeStoryboard BeginStoryboardName="Spin_BeginStoryboard"/>
        </EventTrigger>
        <EventTrigger RoutedEvent="ButtonBase.Click" SourceName="stopButton">
            <PauseStoryboard BeginStoryboardName="Spin_BeginStoryboard"/>
        </EventTrigger>
    </Window.Triggers>
    <Window.Background>
        <LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
            <GradientStop Color="#FFFFFFFF" Offset="0"/>
            <GradientStop Color="#FFFFC45A" Offset="1"/>
        </LinearGradientBrush>
    </Window.Background>
    <Grid>
        <StackPanel>
            <Ellipse Margin="15,85,0,0" Name="ellipse1" Stroke="{x:Null}" Height="80" HorizontalAlignment="Left" VerticalAlignment="Top" Width="120" Fill="Red" Opacity="0.5" RenderTransformOrigin="0.92,0.5" >
                <Ellipse.BitmapEffect>
                    <BevelBitmapEffect/>
                </Ellipse.BitmapEffect>
                <Ellipse.RenderTransform>
                    <TransformGroup>
                        <RotateTransform Angle="0"/>
                    </TransformGroup>
                </Ellipse.RenderTransform>
            </Ellipse>
            <Button Name="goButton" Content="Go"/>
        <Button Name="stopButton" Content="Stop"/>
        <Button Name="toggleButton" Content="Toggle" Click="toggleButton_Click" />
       </StackPanel>

    </Grid>
</Window>


//File:Window.xaml.vb

Imports System
Imports System.Collections.Generic
Imports System.Linq
Imports System.Text
Imports System.Windows
Imports System.Windows.Controls
Imports System.Windows.Data
Imports System.Windows.Documents
Imports System.Windows.Input
Imports System.Windows.Media
Imports System.Windows.Media.Imaging
Imports System.Windows.Navigation
Imports System.Windows.Shapes
Imports System.Windows.Media.Animation

Namespace WpfApplication1
  Public Partial Class Window1
    Inherits Window
    Public Sub New()
      InitializeComponent()
    End Sub

    Private Sub toggleButton_Click(sender As Object, e As RoutedEventArgs)
      Dim spinStoryboard As Storyboard = TryCast(Resources("Spin"), Storyboard)
      If spinStoryboard IsNot Nothing Then
        If spinStoryboard.GetIsPaused(Me) Then
          spinStoryboard.[Resume](Me)
        Else
          spinStoryboard.Pause(Me)
        End If
      End If
    End Sub
  End Class
End Namespace

   
    
    
    
  
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