Question

OK I’m redoing this since I messed it up. 🙂 here’s the xaml.

<Window     xmlns='http://schemas.microsoft.com/winfx/2006/xaml/presentation'     xmlns:x='http://schemas.microsoft.com/winfx/2006/xaml'     x:Class='ucWaitIndicator.Window1'     x:Name='Window'     Title='Window1'     Width='640' Height='480'>     <Window.Resources>         <Storyboard x:Key='OnLoaded1'>             <DoubleAnimationUsingKeyFrames BeginTime='00:00:00' Storyboard.TargetName='path' Storyboard.TargetProperty='(UIElement.RenderTransform).(TransformGroup.Children)[2].(RotateTransform.Angle)' RepeatBehavior='Forever'>                 <SplineDoubleKeyFrame KeyTime='00:00:00.5000000' Value='360'/>             </DoubleAnimationUsingKeyFrames>         </Storyboard>     </Window.Resources>     <Window.Triggers>         <EventTrigger RoutedEvent='FrameworkElement.Loaded'>             <BeginStoryboard Storyboard='{StaticResource OnLoaded1}'/>         </EventTrigger>     </Window.Triggers>      <Grid x:Name='LayoutRoot'>         <Path Data='M180.99244,64C116.37543,64 63.992443,116.38299 63.992443,181 63.992443,245.61742 116.37549,298 180.99244,298 245.60981,298 297.99244,245.61737 297.99244,181 297.99244,116.38304 245.60986,64 180.99244,64z M180.99244,0.5C205.91427,0.5 229.65641,5.5507355 251.25119,14.684582 256.64987,16.968037 261.91435,19.506668 267.02946,22.285378 307.95065,44.515015 339.31398,82.108706 353.37751,127.32482 356.89353,138.6289 359.32811,150.40922 360.56053,162.54492 361.79308,174.68071 361.79307,187.31935 360.56053,199.45508 355.63085,247.99793 331.46539,290.85483 295.8072,320.28259 277.97817,334.9964 257.2756,346.35331 234.66763,353.38507 223.36361,356.90106 211.58325,359.33566 199.44752,360.56808 187.31179,361.80063 174.67315,361.80063 162.53737,360.56808 113.99482,355.63844 71.137715,331.47319 41.70987,295.81476 26.995966,277.98571 15.63918,257.28314 8.6073667,234.67519 5.0914601,223.37117 2.6567941,211.59082 1.4243458,199.45508 0.19188775,187.31935 0.19188165,174.68071 1.4243458,162.54492 6.3541056,114.00227 30.519295,71.145355 66.177677,41.717426 84.006863,27.003489 104.70924,15.646738 127.31726,8.6149235 138.62133,5.0989907 150.40165,2.6643478 162.53737,1.4319025 168.60525,0.81567122 174.76199,0.5 180.99244,0.5z' Margin='10,10,0,0' x:Name='path' RenderTransformOrigin='0.5,0.5' Stretch='Fill' Stroke='Black' Height='77' HorizontalAlignment='Left' VerticalAlignment='Top' Width='77' MouseLeftButtonDown='path_MouseLeftButtonDown' MouseRightButtonDown='path_MouseRightButtonDown'>             <Path.RenderTransform>                 <TransformGroup>                     <ScaleTransform ScaleX='1' ScaleY='1' />                     <SkewTransform AngleX='0' AngleY='0' />                     <RotateTransform Angle='0' />                     <TranslateTransform X='0' Y='0' />                 </TransformGroup>             </Path.RenderTransform>             <Path.Fill>                 <LinearGradientBrush EndPoint='0.5,1' StartPoint='0.5,0'>                     <GradientStop Color='Black' Offset='0' />                     <GradientStop Color='#FF7E7E7E' Offset='1' />                 </LinearGradientBrush>             </Path.Fill>         </Path>     </Grid> </Window> 

It’s a continuous animation. In the codebehind I have the following:

public partial class Window1 : Window { public Storyboard myStoryboard;  public Window1()     {         this.InitializeComponent();          // Insert code required on object creation below this point.     myStoryboard = (Storyboard)TryFindResource('OnLoaded1');     myStoryboard.Begin(); }  private void path_MouseLeftButtonDown(object sender, MouseButtonEventArgs e) {     myStoryboard.Begin(); }   private void path_MouseRightButtonDown(object sender, MouseButtonEventArgs e) {     myStoryboard.Stop();  }  } 

I get really sporadic control using the start and stop methods. Sometimes a stop works, but only if I’ve done the rightclick start first. I don’t understand why STOP is not stopping it, and start is not starting it?

Thanks guys.

Answer 1

Do you want to do this in XAML or in the c# code behind?

Both methods can give you some great flexibility with your animations.

Here is the XAML storyboard solution, let me know if you want a pure c# version.

using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Windows; using System.Windows.Controls; using System.Windows.Data; using System.Windows.Documents; using System.Windows.Input; using System.Windows.Media; using System.Windows.Media.Imaging; using System.Windows.Shapes; using System.Media.Animation; using System.Windows.Resources; using System.Windows.Markup; // Make sure to include this reference to use Storyboard Class using System.Windows.Media.Animation;   namespace StoryboardSample {     public partial class Window1 : Window  {         // Set up the Storyboard variable         public Storyboard myStoryboard;         public Window1()   {    this.InitializeComponent();     // Assign the Storyboard to the variable.             myStoryboard = (Storyboard)TryFindResource('myStoryboard');             myFunction();    }         public void myFunction()         {             // Begin the Animation             myStoryboard.Begin();         }  } }   <Window  xmlns='http://schemas.microsoft.com/winfx/2006/xaml/presentation'  xmlns:x='http://schemas.microsoft.com/winfx/2006/xaml'  x:Class='StoryboardSample.Window1'  x:Name='Window'  Title='Window1'  Width='640' Height='480'>  <Window.Resources>   <Storyboard x:Key='myStoryboard'>    <DoubleAnimationUsingKeyFrames BeginTime='00:00:00' Storyboard.TargetName='myRect' Storyboard.TargetProperty='(UIElement.RenderTransform).(TransformGroup.Children)[3].(TranslateTransform.Y)'>     <SplineDoubleKeyFrame KeyTime='00:00:00' Value='0'/>     <SplineDoubleKeyFrame KeyTime='00:00:01' Value='-71'/>    </DoubleAnimationUsingKeyFrames>   </Storyboard>  </Window.Resources>  <Grid x:Name='LayoutRoot'>  <Rectangle x:Name='myRect' Fill='Black' Width='300' Height='150' RenderTransformOrigin='0.5,0.5' >   <Rectangle.RenderTransform>    <TransformGroup>     <ScaleTransform ScaleX='1' ScaleY='1'/>     <SkewTransform AngleX='0' AngleY='0'/>     <RotateTransform Angle='0'/>     <TranslateTransform X='0' Y='0'/>    </TransformGroup>   </Rectangle.RenderTransform>  </Rectangle>  </Grid> </Window> 

I have a write-up on my blog with a little more detail on this code.