C# 计时器 以“天时分秒毫秒”形式动态增加显示

参考：http://zhidao.baidu.com/link?url=j-jxQJenrO54BSKJ_IkXWbhdDqbVLUyyenjjSGs8G0xdisgBZ0EMhzyWgARSFct6rTP5BaabDacbTOvoxhijg_

代码：

一、新建一个WindowsFormsApplication工程

在Design设计区中，从ToolBox拖了四个控件：两个Buttion、一个Label、一个Timer，下面是Form1.cs中自动生成的对应的初始化代码

partial class Form1
{

        ... ...

        private System.Windows.Forms.Button button1;
        private System.Windows.Forms.Label timerShow;
        private System.Windows.Forms.Button button2;
        private System.Windows.Forms.Timer timer2;
}

二、设计区上双击控件进入对应的方法，所有控件对应的方法代码如下：

public partial class Form1 : Form
    {

        System.Diagnostics.Stopwatch sw;
        TimeSpan ts;

        public Form1()
        {
            InitializeComponent();
            timer2.Interval = 1;
            sw = new System.Diagnostics.Stopwatch();
            ts = sw.Elapsed;
        }

        private void Form1_Load(object sender, EventArgs e)
        {

        }

        private void label1_Click(object sender, EventArgs e)
        {
            
        }

        private void button1_Click(object sender, EventArgs e)
        {
            sw.Start();

            timer2.Start();

            ts = sw.Elapsed;

            timerShow.Text = String.Format("{0:00}天{1:00}小时{2}分{3}秒{4}毫秒", ts.Days, ts.Hours, ts.Minutes, ts.Seconds, ts.Milliseconds);
        }

        private void button2_Click(object sender, EventArgs e)
        {
            sw.Stop();

            ts = sw.Elapsed;

            timerShow.Text = String.Format("{0:00}天{1:00}小时{2:00}分{3}秒{4}毫秒", ts.Days, ts.Hours, ts.Minutes, ts.Seconds, ts.Milliseconds);
        }

        private void timer2_Tick(object sender, EventArgs e)
        {
            ts = sw.Elapsed;

            timerShow.Text = String.Format("{0:00}天{1:00}小时{2:00}分{3:00}秒{4}毫秒", ts.Days, ts.Hours, ts.Minutes, ts.Seconds, ts.Milliseconds);

            timerShow.Refresh();
        }

        
    }

效果：