C# beginner - Callback in the same function

Question

I'm pretty sure that is possible (at least in java it is) and I'm C# beginner.

So I have a function which includes a callback (notify some other method that some work is finished).

I don't want to call another function because I'm losing a parameter there (and can't pass parameters in callback functions). How can I do everything in the same function?

What I'm doing now:

public static Tween Play(Tween tweenToPlay) 
{
    return tweenToPlay.Play().OnComplete(RewindCallback);

}

private static void RewindCallback() 
{
    // Execute some code after Tween is completed
}

What I actually want:

public static Tween Play(Tween tweenToPlay) 
{
    return tweenToPlay.Play().OnComplete(/*Create a function that will execute here*/);
}

Answer 1

Do you mean a lambda expression, like this?

public static Tween Play(Tween tweenToPlay) 
{
    return tweenToPlay
        .Play()
        .OnComplete(() => {
            //  Do stuff
        });
}

Answer 2

You just want an anonymous method?

public static Tween Play(Tween tweenToPlay) 
{
    return tweenToPlay.Play().OnComplete(() => 
    {
        //... your code
    });
}