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 pen3 = new Pen(Color.Blue, 20);       pen3.CompoundArray = new float[] { 0.0f, 0.25f, 0.45f, 0.55f, 0.75f, 1.0f };       Graphics g3 = this.CreateGraphics();       g3.DrawRectangle(pen3, new Rectangle(50, 50, 300, 200));    }  }}