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

        private void button2_Click(object sender, EventArgs e)
        {
            return;
        }

        private void button1_Click(object sender, EventArgs e)
        {
            label1.Visible = false;
            button1.Visible = false;
            button2.Visible = false;
            this.WindowState = System.Windows.Forms.FormWindowState.Maximized;
        }
    }