Public Shared Sub SetBitmapScalingMode ( _
    target As DependencyObject, _
    bitmapScalingMode As BitmapScalingMode _
)

Dim target As DependencyObject
Dim bitmapScalingMode As BitmapScalingMode

RenderOptions.SetBitmapScalingMode(target, _
    bitmapScalingMode)

public static void SetBitmapScalingMode(
    DependencyObject target,
    BitmapScalingMode bitmapScalingMode
)

public:
static void SetBitmapScalingMode(
    DependencyObject^ target, 
    BitmapScalingMode bitmapScalingMode
)

public static function SetBitmapScalingMode(
    target : DependencyObject, 
    bitmapScalingMode : BitmapScalingMode
)

You cannot use methods in XAML.