2010-11-18 考試 紅綠燈

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
namespace WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
        int i;
        int j;
        public Form1()
        {
            InitializeComponent();
             i=0;
             j = 0;
        }
        private void timer1_Tick(object sender, EventArgs e)
        {
            button1.Enabled = false;
            button2.Enabled = false;
            button3.Enabled = false;
        
            i++;
            i = i % 6;
            label1.Text = Convert.ToString(i);
                 j++;
                j=j%6;
              switch(j)
            {
                case 0:
                button1.Enabled=true;
                button2.Enabled = false;
                button3.Enabled = false;
                break;
                case 1:
                button1.Enabled = false;
                button2.Enabled=true;
                button3.Enabled = false;
                break;
                case 2:
                button1.Enabled = false;
                button2.Enabled = false;
                button3.Enabled=true;
                               
                break;
                case 3:
                button1.Enabled = false;
                button2.Enabled = false;
                button3.Enabled = true;
                break;
                case 4:
                button1.Enabled = false;
                button2.Enabled = false;
                button3.Enabled = true;
                break;
                case 5:
                button1.Enabled = false;
                button2.Enabled = false;
                button3.Enabled = true;
                break;
            }
        }
        private void label1_Click(object sender, EventArgs e)
        {
           
        }
    }
}