private void createRectArea()
{
if (_rectArea == null)
{
_rectArea = new AnnotationRectCollection(Properties.New(Names.RectArea));
}
}
protected override void onPropertiesSet()
{
base.onPropertiesSet();
var rect = Properties.Properties(Names.RectArea);
if (rect != null)
{
_rectArea = new AnnotationRectCollection(rect);
}
}