Silverlight 3: Error Button Loaded value is out of range

Silverlight 3: Error Button Loaded value is out of range

I am using Silverlight 3 - Visual studio 2010

I want animate button in Grid Load.

In Silverlight I am getting the error "Button Loaded value is out of range".

But the Same code is worked in WPF

To make this code to work in silverlight do i need to any change?

Please help.

<UserControl xmlns:data="clr-namespace:System.Windows.Controls;assembly=System.Windows.Controls.Data"  x:Class="DataGridEx1.MainPage"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    mc:Ignorable="d"
    d:DesignHeight="300" d:DesignWidth="400">
    
    <Grid x:Name="LayoutRoot" Background="White">
        <StackPanel>
            <data:DataGrid x:Name="dataGrid"  AutoGenerateColumns="False">
                <data:DataGrid.Columns>
                    <data:DataGridTextColumn Binding="{Binding ID}" Header="ID" IsReadOnly="True"></data:DataGridTextColumn>
                    <data:DataGridTextColumn Binding="{Binding Name}" Header="Job Name" IsReadOnly="True"></data:DataGridTextColumn>
                    <data:DataGridTemplateColumn Header="Job Status">
                        <data:DataGridTemplateColumn.CellTemplate>
                            <DataTemplate>
                                <Button VerticalAlignment="Center" Loaded="btnLayout_Loaded" Content="{Binding Des}" HorizontalAlignment="Left" Width="50" Height="20"  Name="btnLayout">
                                    <Button.RenderTransform>
                                        <RotateTransform Angle="180" />
                                    </Button.RenderTransform>
                                    <Button.Triggers>
                                        <EventTrigger RoutedEvent="Button.Loaded">
                                            <EventTrigger.Actions>
                                                <BeginStoryboard>
                                                    <Storyboard>
                                                        <DoubleAnimation Storyboard.TargetProperty="(Button.RenderTransform).(RotateTransform.Angle)"
                     From="0" To="180" Duration="0:0:2"  />
                                                    </Storyboard>
                                                </BeginStoryboard>
                                            </EventTrigger.Actions>
                                        </EventTrigger>
                                    </Button.Triggers>
                                </Button>
                            </DataTemplate>
                        </data:DataGridTemplateColumn.CellTemplate>
                    </data:DataGridTemplateColumn>
                </data:DataGrid.Columns>
            </data:DataGrid>
        </StackPanel>
    </Grid>
</UserControl>

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