AddArc

AddArc(RectangleF, float, float)

public void AddArc(RectangleF rect, float startAngle, float sweepAngle)

也可以看看


AddArc(float, float, float, float, float, float)

public void AddArc(float x, float y, float width, float height, float startAngle, float sweepAngle)

也可以看看