public Nullable<Rectangle> SourceRectangle { get; set; }

Public Property SourceRectangle As Nullable(Of Rectangle)
	Get
	Set

public:
property Nullable<Rectangle> SourceRectangle {
	Nullable<Rectangle> get ();
	void set (Nullable<Rectangle> value);
}

member SourceRectangle : Nullable<Rectangle> with get, set

Property Value

Special notes for Windows Universal (UWP):
Usually, the type of this property is a nullable rectangle. In UWP nullable game object properties cannot be used because of a bug in .NET Native. Therefore, the type of this property is not nullable in the UWP build. Use an Empty rectangle if the whole texture should be displayed.

Reference