本文介绍了System.Timers.Timer如何获取到过去为止的剩余时间的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
使用C#,如何从System.Timers.Timer
对象获取剩余时间(发生经过事件之前)?
Using C#, how may I get the time remaining (before the elapse event will occur) from a System.Timers.Timer
object?
换句话说,假设我将计时器间隔设置为6小时,但是3小时后,我想知道还剩下多少时间.我将如何获取计时器对象以显示剩余时间?
In other words, let say I set the timer interval to 6 hours, but 3 hours later, I want to know how much time is remaining. How would I get the timer object to reveal this time remaining?
推荐答案
内置计时器不会提供剩余时间,直到经过时为止.您需要创建自己的类,该类包装计时器并公开此信息.
The built-in timer doesn't provide the time remaining until elapse. You'll need to create your own class which wraps a timer and exposes this info.
类似的事情应该起作用.
Something like this should work.
public class TimerPlus : IDisposable
{
private readonly TimerCallback _realCallback;
private readonly Timer _timer;
private TimeSpan _period;
private DateTime _next;
public TimerPlus(TimerCallback callback, object state, TimeSpan dueTime, TimeSpan period)
{
_timer = new Timer(Callback, state, dueTime, period);
_realCallback = callback;
_period = period;
_next = DateTime.Now.Add(dueTime);
}
private void Callback(object state)
{
_next = DateTime.Now.Add(_period);
_realCallback(state);
}
public TimeSpan Period
{
get
{
return _period;
}
}
public DateTime Next
{
get
{
return _next;
}
}
public TimeSpan DueTime
{
get
{
return _next - DateTime.Now;
}
}
public bool Change(TimeSpan dueTime, TimeSpan period)
{
_period = period;
_next = DateTime.Now.Add(dueTime);
return _timer.Change(dueTime, period);
}
public void Dispose()
{
_timer.Dispose();
}
}
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