An IValueConverter that uses the LeftFactor, RightFactor, TopFactor, and BottomFactor properties to create a Thickness object. The factor properties are multiplied by the width and height values of a given Rect to calculate the values of the created Thickness values.

[ValueConversionAttribute(typeof(Rect), typeof(Thickness))]
public class MarginConverter : IValueConverter

<ValueConversionAttribute(GetType(Rect), GetType(Thickness))> _
Public Class MarginConverter _
	Implements IValueConverter