将ClassA中的事件处理程序添加到ClassB中调用的事件中

Question

I am really stuck with how to use events in my app. I have two files:

RTimer.cs
SettingsForm.cs

I have a timer set up in RTimer.cs that initializes the timer and sets the interval and such.

I have a method in SettingsForm.cs that needs to do something every time the timer ticks. This file also has a method that sets the timers interval via a SetTimer() method in the RTimer.cs

I cant for the life of me figure out how to get the Tick event to call the method from the other class, or get the method in the other class to subscribe to the Tick event.

Answer 1

You can implement this way :

class SettingsForm
{
    public void OnTimerEvent(object sender, EventArgs e)
    {
        throw new NotImplementedException();
    }
}

class RTimer
{
    Timer timer = new Timer();
    public void StartTimer(SettingsForm settingForm)
    {
        timer.Tick += settingForm.OnTimerEvent;
        timer.Interval = 5000;
        timer.Enabled = true;
    }
}