怎样使用线帽画带箭头的直线

Question

我想把直线改成末端是箭头状的，可是不知道怎么在输入redPen.EndCap=a后跳出来可以选择的那个列表里没有ArrowAnchor这个选项，
请大家指教！
顺便问下，要画带箭头的直线是改变pen的endcap属性吧？
Pen redPen = new Pen(Color.Red, 1);
redPen.EndCap=a

Answer 1

System.Drawing.Drawing2D.AdjustableArrowCap lineCap = new System.Drawing.Drawing2D.AdjustableArrowCap(9,9,false);    Pen p =new Pen(Brushes.Black,1); 
p.CustomEndCap= (System.Drawing.Drawing2D.CustomLineCap)lineCap;  

Answer 2

protected void DrawCaps(PaintEventArgs e)
{
    GraphicsPath hPath = new GraphicsPath();    // Create the outline for our custom end cap.
    hPath.AddLine(new Point(0, 0), new Point(0, 5));
    hPath.AddLine(new Point(0, 5), new Point(5, 1));
    hPath.AddLine(new Point(5, 1), new Point(3, 1));    // Construct the hook-shaped end cap.
    CustomLineCap HookCap = new CustomLineCap(null, hPath);    // Set the start cap and end cap of the HookCap to be rounded.
    HookCap.SetStrokeCaps(LineCap.Round, LineCap.Round);    // Create a pen and set end custom start and end
    // caps to the hook cap.
    Pen customCapPen = new Pen(Color.Black, 5);
    customCapPen.CustomStartCap = HookCap;
    customCapPen.CustomEndCap = HookCap;    // Create a second pen using the start and end caps from
    // the hook cap.
    Pen capPen = new Pen(Color.Red, 10);
    LineCap startCap;
    LineCap endCap;
    HookCap.GetStrokeCaps(out startCap, out endCap);
    capPen.StartCap = startCap;
    capPen.EndCap = endCap;    // Create a line to draw.
    Point[] points = { new Point(100, 100), new Point(200, 50), 
        new Point(250, 300) };    // Draw the lines.
    e.Graphics.DrawLines(capPen, points);
    e.Graphics.DrawLines(customCapPen, points);}