C#画笔Pen画虚线的方法

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Drawing.Drawing2D;
namespace WindowsApplication2
{
  public partial class Form11 : Form
  {
    public Form11()
    {
      InitializeComponent();
    }
    private void button1_Click(object sender, EventArgs e)
    {
      Pen pen2 = new Pen(Color.Blue, 12);
      pen2.DashStyle = DashStyle.Custom;
      pen2.DashPattern = new float[] { 1f, 1f };
      Graphics g2 = this.CreateGraphics();
      g2.DrawLine(pen2, 10, 150, 500, 150);
    }
  }
}