hw 1

程式設計工藝大師



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 WindowsFormsApplication1
{
    public partial class Form1 : Form
    {int d=0,c=0;
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {

        }

        private void button1_Click(object sender, EventArgs e)
        {
            c=c+1;
            button1.Text =c.ToString();

        }

        private void timer1_Tick(object sender, EventArgs e)
        {
            c = c + 1;
            d=c%3;
            if (d==0)
                {
                    button1.BackColor=System.Drawing.Color.FromName("Red");
            }
            else button1.BackColor = System.Drawing.Color.FromName("white");
            if (d == 1)
            {
                button2.BackColor = System.Drawing.Color.FromName("Black");
            }
            else button2.BackColor = System.Drawing.Color.FromName("white");
            if(d==2)
            {
                button3.BackColor = System.Drawing.Color.FromName("Green");
            }
            else button3.BackColor = System.Drawing.Color.FromName("white");
        }
    }
}

(紅綠燈)