倒數計時&時鐘

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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)

        {

   

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 "; 

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

        }

        private void Form1_Load(object sender, EventArgs e)

        {

            

            dtNext = DateTime.Now.AddHours(2);

            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 textBox1_TextChanged(object sender, EventArgs e)

        {

            

        }

    }

}