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    copied!<p>I made my own custom <code>BusyIndicator</code> from Silverlight Toolkit</p> <p>Here is what you need:</p> <ol> <li><p>Set the System namespace in your style file:</p> <p>xmlns:System="clr-namespace:System;assembly=mscorlib"</p></li> <li><p>Put the style/template in your style file:</p> <pre><code>&lt;ControlTemplate x:Key="AjaxBusyIndicatorControlTemplate" TargetType="toolkit:BusyIndicator"&gt; &lt;Grid x:Name="ColorLayer"&gt; &lt;VisualStateManager.VisualStateGroups&gt; &lt;VisualStateGroup x:Name="VisibilityStates"&gt; &lt;VisualState x:Name="Hidden"&gt; &lt;Storyboard&gt; &lt;ObjectAnimationUsingKeyFrames BeginTime="00:00:00" Duration="00:00:00.001" Storyboard.TargetProperty="(UIElement.Visibility)" Storyboard.TargetName="busycontent"&gt; &lt;DiscreteObjectKeyFrame KeyTime="00:00:00"&gt; &lt;DiscreteObjectKeyFrame.Value&gt; &lt;Visibility&gt;Collapsed&lt;/Visibility&gt; &lt;/DiscreteObjectKeyFrame.Value&gt; &lt;/DiscreteObjectKeyFrame&gt; &lt;/ObjectAnimationUsingKeyFrames&gt; &lt;ObjectAnimationUsingKeyFrames BeginTime="00:00:00" Duration="00:00:00.001" Storyboard.TargetProperty="(UIElement.Visibility)" Storyboard.TargetName="overlay"&gt; &lt;DiscreteObjectKeyFrame KeyTime="00:00:00"&gt; &lt;DiscreteObjectKeyFrame.Value&gt; &lt;Visibility&gt;Collapsed&lt;/Visibility&gt; &lt;/DiscreteObjectKeyFrame.Value&gt; &lt;/DiscreteObjectKeyFrame&gt; &lt;/ObjectAnimationUsingKeyFrames&gt; &lt;/Storyboard&gt; &lt;/VisualState&gt; &lt;VisualState x:Name="Visible"&gt; &lt;Storyboard&gt; &lt;ObjectAnimationUsingKeyFrames BeginTime="00:00:00" Duration="00:00:00.001" Storyboard.TargetProperty="(UIElement.Visibility)" Storyboard.TargetName="busycontent"&gt; &lt;DiscreteObjectKeyFrame KeyTime="00:00:00"&gt; &lt;DiscreteObjectKeyFrame.Value&gt; &lt;Visibility&gt;Visible&lt;/Visibility&gt; &lt;/DiscreteObjectKeyFrame.Value&gt; &lt;/DiscreteObjectKeyFrame&gt; &lt;/ObjectAnimationUsingKeyFrames&gt; &lt;ObjectAnimationUsingKeyFrames BeginTime="00:00:00" Duration="00:00:00.001" Storyboard.TargetProperty="(UIElement.Visibility)" Storyboard.TargetName="overlay"&gt; &lt;DiscreteObjectKeyFrame KeyTime="00:00:00"&gt; &lt;DiscreteObjectKeyFrame.Value&gt; &lt;Visibility&gt;Visible&lt;/Visibility&gt; &lt;/DiscreteObjectKeyFrame.Value&gt; &lt;/DiscreteObjectKeyFrame&gt; &lt;/ObjectAnimationUsingKeyFrames&gt; &lt;/Storyboard&gt; &lt;/VisualState&gt; &lt;/VisualStateGroup&gt; &lt;VisualStateGroup x:Name="BusyStatusStates"&gt; &lt;VisualState x:Name="Idle"&gt; &lt;Storyboard&gt; &lt;ObjectAnimationUsingKeyFrames BeginTime="00:00:00" Duration="00:00:00.001" Storyboard.TargetProperty="(Control.IsEnabled)" Storyboard.TargetName="content"&gt; &lt;DiscreteObjectKeyFrame KeyTime="00:00:00"&gt; &lt;DiscreteObjectKeyFrame.Value&gt; &lt;System:Boolean&gt;True&lt;/System:Boolean&gt; &lt;/DiscreteObjectKeyFrame.Value&gt; &lt;/DiscreteObjectKeyFrame&gt; &lt;/ObjectAnimationUsingKeyFrames&gt; &lt;/Storyboard&gt; &lt;/VisualState&gt; &lt;VisualState x:Name="Busy"&gt; &lt;Storyboard RepeatBehavior="Forever" AutoReverse="False"&gt; &lt;DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.RenderTransform).(CompositeTransform.Rotation)" Storyboard.TargetName="loader"&gt; &lt;EasingDoubleKeyFrame KeyTime="0" Value="0"/&gt; &lt;EasingDoubleKeyFrame KeyTime="0:0:1" Value="359.999"/&gt; &lt;/DoubleAnimationUsingKeyFrames&gt; &lt;ObjectAnimationUsingKeyFrames BeginTime="00:00:00" Duration="00:00:00.001" Storyboard.TargetProperty="(Control.IsEnabled)" Storyboard.TargetName="content"&gt; &lt;DiscreteObjectKeyFrame KeyTime="00:00:00"&gt; &lt;DiscreteObjectKeyFrame.Value&gt; &lt;System:Boolean&gt;False&lt;/System:Boolean&gt; &lt;/DiscreteObjectKeyFrame.Value&gt; &lt;/DiscreteObjectKeyFrame&gt; &lt;/ObjectAnimationUsingKeyFrames&gt; &lt;/Storyboard&gt; &lt;/VisualState&gt; &lt;/VisualStateGroup&gt; &lt;/VisualStateManager.VisualStateGroups&gt; &lt;ContentControl x:Name="content" ContentTemplate="{TemplateBinding ContentTemplate}" Content="{TemplateBinding Content}" HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}" VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}"/&gt; &lt;Rectangle x:Name="overlay" Style="{TemplateBinding OverlayStyle}"/&gt; &lt;ContentPresenter x:Name="busycontent"&gt; &lt;Path x:Name="loader" Height="19" Width="19" Canvas.Left="0.5" Canvas.Top="0.5" Stretch="Fill" UseLayoutRounding="False" Stroke="Black" StrokeThickness="0.2" RenderTransformOrigin="0.5,0.5" Data="M9.5,3 C5.9101491,3 3,5.9101491 3,9.5 C3,13.08985 5.9101491,16 9.5,16 C13.08985,16 16,13.08985 16,9.5 C16,5.9101491 13.08985,3 9.5,3 z M9.5,0 C14.746705,0 19,4.2532949 19,9.5 C19,14.746705 14.746705,19 9.5,19 C4.2532949,19 0,14.746705 0,9.5 C0,4.2532949 4.2532949,0 9.5,0 z"&gt; &lt;Path.RenderTransform&gt; &lt;CompositeTransform/&gt; &lt;/Path.RenderTransform&gt; &lt;Path.Fill&gt; &lt;LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0"&gt; &lt;GradientStop Color="#FF0089FF" Offset="0"/&gt; &lt;GradientStop Color="White" Offset="1"/&gt; &lt;/LinearGradientBrush&gt; &lt;/Path.Fill&gt; &lt;/Path&gt; &lt;/ContentPresenter&gt; &lt;/Grid&gt; &lt;/ControlTemplate&gt; &lt;Style x:Key="AjaxBusyIndicator" TargetType="toolkit:BusyIndicator" &gt; &lt;Setter Property="Template" Value="{StaticResource AjaxBusyIndicatorControlTemplate}"/&gt; &lt;/Style&gt; </code></pre></li> <li><p>Use it in your XAML:</p></li> </ol> <p></p> <pre><code>&lt;Grid x:Name="LayoutRoot" Background="White"&gt; &lt;toolkit:BusyIndicator IsBusy="True" Style="{StaticResource AjaxBusyIndicator}"&gt; &lt;TextBox Text="TEST test test" /&gt; &lt;/toolkit:BusyIndicator&gt; &lt;/Grid&gt; </code></pre> <p></p>
 

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