Question

What I’m trying to do is:

public static Action<string> action_thread_ended { get; private set; }

public static void action_set(Action<string> target, Action<string> source)
{
    target += source;
}

Usage (from different class)

MyClassName.action_set(MyClassName.action_thread_ended, Console.WriteLine);

Result: Nothing

I am of course trying to do this to prevent having to make an action_set function for each Action in the class.

Is this possible?

Answer 1

Delegates are immutable.

target += source creates a new delegate instance, and makes the target parameter refer to it.
The property that you passed is not affected.