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Get resource in code as 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