<Window x:Class="Wpf1Application.Window1"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="" Height="300" Width="300">
<Window.Resources>
<Storyboard x:Key="Storyboard1">
<ParallelTimeline>
<DoubleAnimation x:Name="Animation1" Storyboard.TargetProperty="Width" From="140" To="50"
AutoReverse="True" RepeatBehavior="Forever" />
<DoubleAnimation Storyboard.TargetProperty="Opacity" To="0.5" AutoReverse="True" RepeatBehavior="Forever" />
</ParallelTimeline>
</Storyboard>
</Window.Resources>
<UniformGrid>
<Button Margin="5" Content="Method 1">
<Button.Triggers>
<EventTrigger RoutedEvent="Button.Loaded">
<BeginStoryboard Storyboard="{DynamicResource Storyboard1}" x:Name="BeginStoryboard1" />
</EventTrigger>
<EventTrigger RoutedEvent="Button.Click">
<RemoveStoryboard BeginStoryboardName="BeginStoryboard1" />
</EventTrigger>
</Button.Triggers>
</Button>
</UniformGrid>
</Window>
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