using System;
using System.Windows.Forms;

class MySimpleForm : Form
{
    public MySimpleForm()
    {
        Button button = new Button();
        button.Text = "My Button";
        button.Click += new EventHandler(OnClick);

        this.Controls.Add(button);
    }

    void OnClick(Object sender, EventArgs args)
    {
        MessageBox.Show("The Button Was Clicked!");
    }
}
class App
{
    public static void Main()
    {
        Application.Run(new MySimpleForm());
    }
}