using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace WindowsFormsApplication1
{
    public partial class Form4 : Form
    {
        public Form4()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            Graphics forDraw;
            forDraw = panel1.CreateGraphics();
            Pen p1 = new Pen(Color.Aqua, 9);
            Brush b1 = Brushes.Black;
            forDraw.DrawRectangle(p1, 100, 100, 500, 500);
            forDraw.FillRectangle(b1, 100, 100, 500, 500);
        }

    }
}