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C# WinForm 计时器 - 通知父类已引发计时器事件

发布于 2024-09-19 22:54:15 字数 135 浏览 6 评论 0原文

我有一个父类，其中包含一个对象数组，每个对象都有一个与其关联的计时器。

我希望父类能够启动和停止这些计时器，最重要的是希望父类能够检测到它的哪个子对象“计时器已过”甚至已经被引发。

这可能吗？如果可能的话，最好的方法是什么？

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满地尘埃落定 2024-09-26 22:54:15

我建议您为子对象提供一个在计时器触发时可以引发的事件。然后，父类可以将处理程序附加到每个子类的事件。

这是一些伪代码，可以让您了解我的意思。我故意没有展示任何 WinForms 或线程代码，因为您没有提供该领域的太多细节。

class Parent
{
  List<Child> _children = new List<Child>();

  public Parent()
  {
    _children.Add(new Child());
    _children.Add(new Child());
    _children.Add(new Child());

    // Add handler to the child event
    foreach (Child child in _children)
    {
      child.TimerFired += Child_TimerFired;
    }
  }

  private void Child_TimerFired(object sender, EventArgs e)
  {
    // One of the child timers fired
    // sender is a reference to the child that fired the event
  }
}

class Child
{
  public event EventHandler TimerFired;

  protected void OnTimerFired(EventArgs e)
  {      
    if (TimerFired != null)
    {
      TimerFired(this, e);
    }
  }

  // This is the event that is fired by your current timer mechanism
  private void HandleTimerTick(...)
  {
    OnTimerFired(EventArgs.Empty);
  }
}

I would suggest that you give the child objects an event that can be raised when the Timer is fired. Then the Parent class can attach a handler to the event from each child.

Here is some pseudo code to give you an idea of what I mean. I have purposely not shown any WinForms or Threading code, because you do not give much detail in that area.

class Parent
{
  List<Child> _children = new List<Child>();

  public Parent()
  {
    _children.Add(new Child());
    _children.Add(new Child());
    _children.Add(new Child());

    // Add handler to the child event
    foreach (Child child in _children)
    {
      child.TimerFired += Child_TimerFired;
    }
  }

  private void Child_TimerFired(object sender, EventArgs e)
  {
    // One of the child timers fired
    // sender is a reference to the child that fired the event
  }
}

class Child
{
  public event EventHandler TimerFired;

  protected void OnTimerFired(EventArgs e)
  {      
    if (TimerFired != null)
    {
      TimerFired(this, e);
    }
  }

  // This is the event that is fired by your current timer mechanism
  private void HandleTimerTick(...)
  {
    OnTimerFired(EventArgs.Empty);
  }
}

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