2016/10/21 C# 倒數計時

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

       

    {

        DateTime dtNext;

        public Form1()

        {

           

            InitializeComponent();

        }

       

        private void timer1_Tick(object sender, EventArgs e)

        {

            textBox1.Text = System.DateTime.Now.ToString();

            TimeSpan MySpan = dtNext.Subtract(DateTime.Now);

            string diffHour = Convert.ToString(MySpan.Hours);

            string diffMin = Convert.ToString(MySpan.Minutes);

            string diffSec = Convert.ToString(MySpan.Seconds);

            label1.Text = "還有" + diffHour + " 時 " + diffMin + " 分 " + diffSec + " 秒 ";

        }

        private void label1_Click(object sender, EventArgs e)

        {

           

            timer1.Start();

        }

        private void button1_Click(object sender, EventArgs e)

        {

           

            timer1.Enabled=true;

        }

        private void button2_Click(object sender, EventArgs e)

        {

            timer1.Enabled = false;

        }

        private void Form1_Load(object sender, EventArgs e)

        {

            dtNext = DateTime.Now.AddHours(2);

        }

    }

}