Question

求C#倒计时编程实例

Answer 1

public partial class times : Form
{
int i = 1200; //定义倒计时的时间
public times()
{
InitializeComponent();
}
/// <summary>
/// time控件的Tick事件
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void timer1_Tick(object sender, EventArgs e)
{
this.textBox1.Text = (i--).ToString();
}
/// <summary>
/// 窗体的加载事件
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void times_Load(object sender, EventArgs e)
{
this.timer1.Start();
}
}

Answer 2

Janus PowerPoint Countdown Timer, 一款倒计时软件，可用于会议、培训、讲座中PowerPoint幻灯片播放自动倒计时，支持手动/自动、全屏、拖放、快捷设定、时间不足闪烁提醒等。Janus倒计时软件采用半透明浮动小窗口悬浮于屏幕上方，能够自动检测幻灯片放映并开始倒计时，退出放映时停止计时，也可以用于其它需要倒计时的场合。

Answer 3

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 WindowsFormsApplication2
{
public partial class Form1 : Form
{
DateTime fiveM = new DateTime();
Timer timer = new Timer();

public Form1()
{
InitializeComponent();
timer.Tick += new EventHandler(timer_Tick);
fiveM = DateTime.Parse("00:05:00");
label1.Text = fiveM.Hour.ToString("00") + ":" + fiveM.Minute.ToString("00") + ":" + fiveM.Second.ToString("00");
timer.Interval = 1000;
timer.Start();
}

void timer_Tick(object sender, EventArgs e)
{
if (fiveM !=Convert.ToDateTime("00:00:00"))
{
fiveM = fiveM.AddSeconds(-1);
label1.Text = fiveM.Hour.ToString("00") + ":" + fiveM.Minute.ToString("00") + ":" + fiveM.Second.ToString("00");
}
else
timer.Stop();
}
}
}

Answer 4

详细的可以搜timer的使用，很简单，几行代码就可以了