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 WindowsFormsApp1
{
    public partial class Form1 : Form
    {
        Button btnClickMe = new Button();
        public Form1()
        {
            InitializeComponent();

            btnClickMe.Text = "Click me";
            btnClickMe.Click += BtnClickMe_Click;
            this.Controls.Add(btnClickMe);
        }

        private void BtnClickMe_Click(object sender, EventArgs e)
        {
            MessageBox.Show("You clicked me!");
        }
    }
}