Use DoubleAnimation to animate Gradient Offset : DoubleAnimation « Windows Presentation Foundation « VB.Net Tutorial

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VB.Net Tutorial » Windows Presentation Foundation » DoubleAnimation 
16.109.4.Use DoubleAnimation to animate Gradient Offset
<Window xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="Animation">
    <Canvas xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation">
      <Button Padding="30">
        OK
        <Button.Background>
          <LinearGradientBrush>
            <GradientStop Color="Blue" Offset="0"/>
            <GradientStop Color="Red" Offset="0.5"/>
            <GradientStop Color="Blue" Offset="1"/>
          </LinearGradientBrush>
        </Button.Background>
        <Button.Triggers>
          <EventTrigger RoutedEvent="Button.Loaded">
            <EventTrigger.Actions>
              <BeginStoryboard>
                <Storyboard>
                  <DoubleAnimation From="0" To="1" Duration="0:0:2"
                  Storyboard.TargetProperty="Background.GradientStops[1].Offset"
                  AutoReverse="True" RepeatBehavior="Forever"/>
                </Storyboard>
              </BeginStoryboard>
            </EventTrigger.Actions>
          </EventTrigger>
        </Button.Triggers>
      </Button>
    </Canvas>
</Window>
WPF Use Double Animation To Animate Gradient Offset
16.109.DoubleAnimation
16.109.1.DoubleAnimation Loop foreverDoubleAnimation Loop forever
16.109.2.DoubleAnimation Loop three timesDoubleAnimation Loop three times
16.109.3.DoubleAnimation Loop for 30 secondsDoubleAnimation Loop for 30 seconds
16.109.4.Use DoubleAnimation to animate Gradient OffsetUse DoubleAnimation to animate Gradient Offset
16.109.5.Path Animation with DoubleAnimation Using Path, AutoReversePath Animation with DoubleAnimation Using Path, AutoReverse
16.109.6.Create DoubleAnimation and Animate a Button with Button.BeginAnimation and Button.WidthPropertyCreate DoubleAnimation and Animate a Button with Button.BeginAnimation and Button.WidthProperty
16.109.7.TranslateTransform and DoubleAnimationTranslateTransform and DoubleAnimation
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