Question

A simple question on callbacks. Do callback functions return to the next line in the calling function after completion ?

class A
{
 public delegate void A();
 public event A onA;

 public void func()
 {
   //some code 1
  onA();
  //some code 2 
 }

So the question is will onA event go and execute the respective handler and then come back to ‘some code 2’ bit or is this asynchronous and code will not wait for the event to be fully handled?

I hope the question is clear.

Thanks
}

Answer 1

Yes, in your example onA() will trigger all over the event handlers hooked up to A to fire. They are just methods that will be called. After they are all called, control will return to func().

It is not asynchronous – you are only using one thread. Everything will happen in a well defined order.

A good way to experiment would be to step through the code in your example using the built in debugger.