Blur background in WPF

Question

I am trying to create a blur effect in WPF, but I want to blur the content located behind the control (such as a Grid), I do not intend to blur the contents of the Grid.

I want to do something like this image.

Answer 1

If you are looking for something like this:

The answer is to use a BitmapEffect :

<Image Source="http://www.pingminghealth.com/wp-content/uploads/2010/12/cherries.jpg" Stretch="UniformToFill">
    <Image.BitmapEffect>
        <BlurBitmapEffect Radius="20" />
    </Image.BitmapEffect>
</Image>

You can find a tutorial about it on msdn: How to Apply a Blur Effect to a Visual.