Кликер

using System;
using System.Windows.Forms;
 
namespace WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
        private int _next_btn, _score;
        private Timer _t;
        public Form1()
        {
            InitializeComponent();
            button1.Click += new System.EventHandler(this.btn_Click);
            button2.Click += new System.EventHandler(this.btn_Click);
            button3.Click += new System.EventHandler(this.btn_Click);
            button4.Click += new System.EventHandler(this.btn_Click);
            button5.Click += new System.EventHandler(this.btn_Click);
            button6.Click += new System.EventHandler(this.btn_Click);
            button7.Click += new System.EventHandler(this.btn_Click);
            button8.Click += new System.EventHandler(this.btn_Click);
            button9.Click += new System.EventHandler(this.btn_Click);
            button10.Click += new System.EventHandler(this.btn_Click);
            changeBtn();
            _t = new Timer(){Enabled=true,Interval=1000};
            _t.Tick += new System.EventHandler(this.tick);
        }
        private void tick(object sender, EventArgs e)
        {
            changeBtn();
        }
        private void changeBtn()
        {
            foreach (Control btn in this.Controls) if (btn.GetType()==typeof(Button)) ((Button)btn).Enabled = false;
            ((Button)this.GetType().GetField("button"+(_next_btn=(new Random()).Next(1, 10)).ToString(), System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.NonPublic).GetValue(this)).Enabled = true;
        }
        private void btn_Click(object sender, EventArgs e)
        {
            if (((Button)sender).Name == "button" + _next_btn.ToString()) this.Text = (++_score).ToString();
            changeBtn();
        }
 
    }
}