view gif image in image UI control windows phone 7

I want to display the gif image in the UI image control.

I have Image image1;

image1.source = new BitmapImage(new Uri(link, UriKind.Absolute));

but the link in Uri is a .gif image.

I have read this: imagetool however I still not get it how to use the library. I did download the library and add references, then from that I'm stuck, I want to set source in code. Can you help explains it a little bit more?

My code currently like this:

<UserControl.Resources>
    <imagetools:ImageConverter x:Key="ImageConverter" />
</UserControl.Resources>

<Grid x:Name="LayoutRoot" Background="Transparent">
    <Grid HorizontalAlignment="Right" Width="69">
        <Border  BorderBrush="White" BorderThickness="3" CornerRadius="7" Background="Black">
            <Image  Width="69" Height="69" Name="canvasImage" Stretch="UniformToFill" HorizontalAlignment="Center" VerticalAlignment="Center" ImageFailed="canvasImage_ImageFailed" />
        </Border>
        <Border  BorderBrush="White" BorderThickness="3" CornerRadius="7" Background="Black">
            <imagetools:AnimatedImage  Name="canvasGifImage" Width="69" Height="69" Stretch="UniformToFill" HorizontalAlignment="Center" VerticalAlignment="Center" />
        </Border>
    </Grid>
</Grid>

        In my MainPage.xaml.cs, because I don't know whether it is an png/jpg or a gif, so I have it try to load png/jpg first, if failed then try load gif in the imagetools control name canvasGifImage:

        private void DisplayImage(int index, string link)
    {
        try
        {
            control1.canvasImage.Source = new BitmapImage(new Uri(link, UriKind.Absolute));
        }
        catch //if fail to load image as normal, do this
        {
            //but I dont know how to set Source for the canvasGifImage, help me here:

            control1.canvasGifImage.Source = *new BitmapImage(new Uri(link, UriKind.Absolute));*

        }
    }

Copyright Notice：Content Author:「Nghia Nguyen」，Reproduced under the CC 4.0 BY-SA copyright license with a link to the original source and this disclaimer.
Link to original article：https://stackoverflow.com/questions/7201693/view-gif-image-in-image-ui-control-windows-phone-7