显示经过的时间
本文关键字:时间 经过 显示 | 更新日期: 2023-09-27 17:57:12
我需要动态显示经过的时间。我的代码将根据间隔值弹出一条消息。
public void button1_Click(object sender, EventArgs e)
{
this.TopMost = true;
DialogResult result1 = MessageBox.Show("Add some notes to your current ticket?",
"Add Notes",
MessageBoxButtons.YesNo);
if (result1 == DialogResult.Yes)
{
Timer tm;
tm = new Timer();
int minutes = int.Parse(textBox2.Text);
tm.Interval = (int)TimeSpan.FromMinutes(minutes).TotalMilliseconds;
tm.Tick += new EventHandler(button1_Click);
tm.Enabled = true;
string pastebuffer = DateTime.Now.ToString();
pastebuffer = "### Edited on " + pastebuffer + " by " + txtUsername.Text + " ###";
Clipboard.SetText(pastebuffer);
tm.Start();
}
else if (result1 == DialogResult.No)
{
}
this.TopMost = false;
}
如果我在间隔中定义了 15 分钟,如何让倒计时显示在标签中?
您应该
将结束时间存储在表单级别的文件中Tick
然后在计时器的事件处理程序中检查结束时间和现在之间的差异,并更新要显示倒数计时器的标签:
private DateTime endTime;
System.Windows.Forms.Timer timer = new System.Windows.Forms.Timer();
private void button1_Click(object sender, EventArgs e)
{
var minutes = 0;
if (int.TryParse(textBox1.Text, out minutes) && timer.Enabled == false)
{
endTime = DateTime.Now.AddMinutes(minutes);
timer.Interval = 1000;
timer.Tick -= new EventHandler(timer_Tick);
timer.Tick += new EventHandler(timer_Tick);
timer.Start();
UpdateText();
}
}
void timer_Tick(object sender, EventArgs e)
{
UpdateText();
}
void UpdateText()
{
var diff = endTime.Subtract(DateTime.Now);
if (diff.TotalSeconds > 0)
label1.Text = string.Format("{0:D2}:{1:D2}:{2:D2}",
diff.Hours, diff.Minutes, diff.Seconds);
else
{
this.Text = "00:00:00";
timer.Enabled = false;
}
}
我不会用计时器胡说八道。为此,我会使用Microsoft的响应式框架。只需NuGet "Rx-Winforms"即可获取位。然后你可以这样做:
Observable
.Create<string>(o =>
{
var now = DateTimeOffset.Now;
var end = now.AddMinutes(15.0);
return
Observable
.Interval(TimeSpan.FromSeconds(0.1))
.TakeUntil(end)
.Select(x => end.Subtract(DateTimeOffset.Now).ToString(@"mm':ss"))
.DistinctUntilChanged()
.Subscribe(o);
})
.ObserveOn(this)
.Subscribe(x => label1.Text = x);
这将自动创建一个倒数计时器,该计时器将使用以下值更新label1
中的文本:
14:5914:5814:5714:5614:5514:54...00:0200:0100:00
如果要在计时器用完之前停止此操作,Subscribe
方法将返回一个IDisposable
,您可以将其调用.Dispose()
。
你应该试着计算15分钟。例如,如果您使用标签(Label1),则应使用计时器对其进行计数。只需使用计时器并计算每个刻度(1000毫秒)+1
Timer1 has a +1 (declare a int as 0)
If the label reaches the number of seconds or minutes
(You can modify that with milliseconds), it stops the timer.