How to make Click me game in c#

How to make Click me  game in c#

Screen Shot

 

Code

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 ClickMe
{
    public partial class Game : Form
    {
        public Game()
        {
            InitializeComponent();
        }

        private void button1_MouseEnter(object sender, EventArgs e)
        {
            Random r = new Random();
            int i = r.Next(0 + 100, this.Width - 100);

            Random rb = new Random();
            int j = rb.Next(0 + 100, this.Height - 100);
            button1.Location = new System.Drawing.Point(i, j);
            //button1.Text = string.Format("({0}:{1})", i, j);
        }

        private void button1_Click(object sender, EventArgs e)
        {
            MessageBox.Show("Nice");
        }
    }
}