public MainWindow()
{
InitializeComponent();
var screenwidth = (SystemParameters.PrimaryScreenWidth);
var screenheight = (SystemParameters.PrimaryScreenHeight);
wallpaper_instance.Source = Screenshot.CopyScreen();
wallpaper_instance.Width = screenwidth;
wallpaper_instance.Height = screenheight;
RenderOptions.SetBitmapScalingMode(wallpaper_instance, BitmapScalingMode.LowQuality);
canvas.Children.Add(wallpaper_instance);
BlurBitmapEffect myBlurEffect = new BlurBitmapEffect();
// Set the Radius property of the blur. This determines how
// blurry the effect will be. The larger the radius, the more
// blurring.
myBlurEffect.Radius = 15;
// Set the KernelType property of the blur. A KernalType of "Box"
// creates less blur than the Gaussian kernal type.
myBlurEffect.KernelType = KernelType.Box;
// Apply the bitmap effect to the Button.
wallpaper_instance.BitmapEffect = myBlurEffect;
}
