<UserControl x:Class="TestLoadPic.Loading"

             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"

             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"

             mc:Ignorable="d"

             d:DesignHeight="300" d:DesignWidth="300"

             Name="ctl"

             RenderTransformOrigin="0.5,0.5"

             >

    <Grid RenderTransformOrigin="0.5,0.5">

        <Ellipse>

            <Ellipse.Fill>

                <RadialGradientBrush>

                    <GradientStop Color="#FFF045AA" Offset="0"/>

                    <GradientStop Color="White" Offset="1"/>

                    <GradientStop Color="#FFFDF1F8" Offset="0.947"/>

                    <GradientStop Color="#FFDA14DA" Offset="0.974"/>

                </RadialGradientBrush>

            </Ellipse.Fill>

        </Ellipse>

        <Ellipse RenderTransformOrigin="0.5,0.5">

            <Ellipse.RenderTransform>

                <TransformGroup>

                    <ScaleTransform x:Name="t" ScaleX="0.0" ScaleY="0.0"/>

                </TransformGroup>

            </Ellipse.RenderTransform>

            <Ellipse.Fill>

                <RadialGradientBrush>

                    <GradientStop Color="#FFF045AA" Offset="0"/>

                    <GradientStop Color="White" Offset="1"/>

                </RadialGradientBrush>

            </Ellipse.Fill>

            <Ellipse.Triggers>

                <EventTrigger RoutedEvent ="Loaded">

                    <BeginStoryboard>

                        <Storyboard RepeatBehavior="Forever" AutoReverse="True">

                            <DoubleAnimation  To="1" Storyboard.TargetProperty="ScaleX" Storyboard.TargetName="t" />

                            <DoubleAnimation  To="1" Storyboard.TargetProperty="ScaleY" Storyboard.TargetName="t" />

                        </Storyboard>

                    </BeginStoryboard>

                </EventTrigger>

             </Ellipse.Triggers>

        </Ellipse>

    </Grid>

</UserControl>