C++ Quiz Form1

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 WindowsFormsApplication3
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        private void button1_Click(object sender, EventArgs e)
        {
            this.Visible = false;
            Form2 form2 = new Form2();
            form2.Show();
        }


        private void Form1_Load(object sender, EventArgs e)
        {

        }

        private void mnuQuit_Click(object sender, EventArgs e)
        {
            DialogResult dialog = MessageBox.Show("Really Quit?", "Exit", MessageBoxButtons.YesNo, MessageBoxIcon.Information);
            if (dialog == DialogResult.Yes)
            {
                Application.Exit();
            }
        }

        private void onlineHelpToolStripMenuItem_Click(object sender, EventArgs e)
        {
            System.Diagnostics.Process.Start("http://www.google.com");
        }

        private void aboutToolStripMenuItem_Click(object sender, EventArgs e)
        {
            this.Visible = true;
            Form12 form12 = new Form12();
            form12.Show();
        }

        private void menuStrip1_ItemClicked(object sender, ToolStripItemClickedEventArgs e)
        {
          //  menuStrip1.BackColor=Color.Blue;
        }
    }
}