C#: Can I cast an explicit delegate to an Action delegate?

Question

Given:

delegate void Explicit();

Can I:

public void Test(Explicit d)
{
    Action a;
    a = d; // ????
}

I have a scenario where I need to overload a constructor that has:

public MyClass(Expression<Action> a) {}

but the following overload is ambiguous:

public MyClass(Action a) {}

I figured using an explicit delegate would resolve the ambiguity but I need to cast that explicit delegate to an action in order to leverage the existing code.

Answer 1

Action a = new Action(d);

Answer 2

No you cannot cast different delegate types with matching signatures between each other. You must create a new delegate / lambda expression of the target type and forward into the original one.

Answer 3

You can also specify the Invoke method to create the new Action delegate

Action a = new Action(d.Invoke);