Tegneprogram 1.0

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 WindowsFormsApp26
{
    public partial class Form1 : Form
    {
        Graphics myCanvas;
        Pen myPen = new Pen(Color.Green, 3.0f);

        int oldX = 0;
        int oldY = 0;
        public Form1()
        {
            InitializeComponent();
        }

        private void btnTegn_Click(object sender, EventArgs e)
        {
            int newX = int.Parse(txtX.Text);
            int newY = int.Parse(txtY.Text);

            myCanvas.DrawLine(myPen, oldX, oldY, newX, newY);

            oldX = newX;
            oldY = newY;
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            myCanvas = this.CreateGraphics();
        }
    }
}