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

namespace WindowsFormsApp15
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }


private void Form1_Paint(object sender, PaintEventArgs e)
        {
            Pen pen = new Pen(Color.Red, 2);
            Graphics graphics = CreateGraphics();

            Random r = new Random();
            int color = r.Next(7);
            int color = 0;
            if (color < 3)
            {
                color = Color.Red;
            }

            for (int i = 0; i <100 ; i++)
            {
                graphics.Clear(Color.White);
                int x = r.Next(200);
                int y = r.Next(200);
                Quad(graphics, pen, x, y);
                System.Threading.Thread.Sleep(1000);

            }



        }
        private void Quad(Graphics graphics, Pen pen,int x=200,int y=200)
        {
            graphics.DrawRectangle(pen, x-10, y-10, x+10, y+10);


        }
    }

}