Question

I want to call a function every X seconds. I read on SO about the the System.Threading.Timer and so I do:

Timer timer = new Timer(new TimerCallback(TimeCallBack), null, 0, 50000);

which calls the function:

void TimeCallBack();

However, I’d like to pass an argument to that function so that the timer calls the following function:

void TimeCallBack(MyClass mc);

I could make the instance I’m passing global but I’d rather pass it. From what I see the TimerCallback delegate is used in the Timer constructor. Any way I can use my own delegate/function call?

Answer 1

You can pass an argument to the callback through the state parameter of the Timer Constructor:

Timer timer = new Timer(new TimerCallback(TimeCallBack), mc, 0, 50000);

Callback:

void TimeCallBack(object state)
{
    MyClass mc = (MyClass)state;
}