C＃绘图：在中间绘制带孔的多边形的最佳方法是什么

I have a shape that is defined by an outer border and then an inner border. IF there is no inner boarder, the shape is solid. If there is an inner border I want the polygon/path to be defined only between the two borders; I don't want to draw the outside and then draw the inside in the background color.I have a shape that is defined by an outer bord