Rysowanie linii

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 RysowanieLinii5
{
public partial class Form1 : Form
{
Graphics g;
public Form1()
{
InitializeComponent();
g = this.CreateGraphics();
}
private void Form1_Load(object sender, EventArgs e)
{
}
private void Button1_Click(object sender, EventArgs e)
{
Pen p1,p2;
p1 = new Pen(Color.Blue, 3);
p2 = new Pen(Color.Red, 5);
g.DrawLine(p1, 100, 100, 200, 200);
g.DrawLine(p2, 200, 200, 500, 200);
}
}
}