GDI+如何画箭头

??????????? Pen p = new Pen(Color.Blue,4);
??????????? p.DashStyle = System.Drawing.Drawing2D.DashStyle.Solid;//恢复实线
??????????? p.EndCap = System.Drawing.Drawing2D.LineCap.ArrowAnchor;
??????????? g.DrawLine(p, p1, p2);