Specifies the number of images to maintain when they are no longer visible (scrolled out of view). Default: 15 Specify -1 to maintain all images in memory. Specify 0 to discard all images when they are not visible.

public int MaintainInvisibleImages { get; set; }

Public Property MaintainInvisibleImages As Integer
	Get
	Set

public:
property int MaintainInvisibleImages {
	int get ();
	void set (int value);
}