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 Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        public long lengte = 0, breedte = 0;

        void berekenOmtrekEnA()
        {
            long A = 0, Omtrek = 0;
            A = breedte * lengte;
            Omtrek = breedte * 2 + lengte * 2;

            outPut.Text = "De Lengte is : " + lengte + "\n";
            outPut.Text += "De Breedte is : " + breedte + "\n\n";
            outPut.Text += "De Omtrek is : " + Omtrek + "\n";
            outPut.Text += "De oppervlakte is :" + A + "\n";


        }

        private void inp_Exit_Click(object sender, EventArgs e)
        {
            Application.Exit();
        }


        private void inp_Lengte_KeyDown(object sender, System.Windows.Forms.KeyPressEventArgs e)
        {
            if ( e.KeyChar == (char)13)
            {
                MessageBox.Show("ello");
            }
        }
    }
}