C# Winform 入门（12）之制作简单的倒计时

 倒计时效果展示

控件展示

以下均是使用label来形成的

label  的 BorderStyle：Fixed3D    ForeColor：Red    Blackground：Black

label 的属性 Name：

txtyear     txtmonth    txtday  txttime  txtweek

txtDays    txtHour    txtMintues   txtSeconds

 修改属性

 定义参数

  /// <summary>/// 定义时间参数/// 用户输入时间；当前时间/// 日，时，分，秒/// isClick用来判断点击事件/// </summary>DateTime dt, dtNow;int d, h, m, s;bool isClick=false;TimeSpan timespan;

Timer事件

最上层时间显示

 private void timer1_Tick(object sender, EventArgs e){dtNow = DateTime.Now;this.txtyear.Text = dtNow.Year.ToString();this.txtmonth.Text = dtNow.Month.ToString();this.txtday.Text = dtNow.Day.ToString();this.txttime.Text = dtNow.ToLongTimeString();string week = "";switch (dtNow.DayOfWeek){case DayOfWeek.Sunday:week = "日";break;case DayOfWeek.Monday:week = "一";break;case DayOfWeek.Tuesday:week = "二";break;case DayOfWeek.Wednesday:week = "三";break;case DayOfWeek.Thursday:week = "四";break;case DayOfWeek.Friday:week = "五";break;case DayOfWeek.Saturday:week = "六";break;default:break;}this.txtweek.Text = week;}

判断按钮是否点击，显示

  if (isClick==false)return;timespan = dt - dtNow;d = timespan.Days;h = timespan.Hours;m = timespan.Minutes;s = timespan.Seconds;txtDays.Text = d.ToString();txtHours.Text = h.ToString();txtMintues.Text = m.ToString();txtSeconds.Text = s.ToString();

按钮点击事件

private void button1_Click(object sender, EventArgs e)
{isClick = true;dt=Convert.ToDateTime(textBox1.Text);
}

代码

/// <summary>
/// 定义时间参数
/// 用户输入时间；当前时间
/// 日，时，分，秒
/// </summary>
DateTime dt, dtNow;
int d, h, m, s;
bool isClick=false;
TimeSpan timespan;
private void timer1_Tick(object sender, EventArgs e)
{dtNow = DateTime.Now;this.txtyear.Text = dtNow.Year.ToString();this.txtmonth.Text = dtNow.Month.ToString();this.txtday.Text = dtNow.Day.ToString();this.txttime.Text = dtNow.ToLongTimeString();string week = "";switch (dtNow.DayOfWeek){case DayOfWeek.Sunday:week = "日";break;case DayOfWeek.Monday:week = "一";break;case DayOfWeek.Tuesday:week = "二";break;case DayOfWeek.Wednesday:week = "三";break;case DayOfWeek.Thursday:week = "四";break;case DayOfWeek.Friday:week = "五";break;case DayOfWeek.Saturday:week = "六";break;default:break;}this.txtweek.Text = week;if (isClick==false)return;timespan = dt - dtNow;d = timespan.Days;h = timespan.Hours;m = timespan.Minutes;s = timespan.Seconds;txtDays.Text = d.ToString();txtHours.Text = h.ToString();txtMintues.Text = m.ToString();txtSeconds.Text = s.ToString();
}
private void button1_Click(object sender, EventArgs e)
{isClick = true;dt=Convert.ToDateTime(textBox1.Text);
}