Using void return types with new Func<T, TResult>

Question

I'm using an anonymous delegate in my code calling this example function:

public static int TestFunction(int a, int b) {     return a + b; } 

The delegate looks like this:

var del = new Func<int, int, int>(TestFunction); 

My question is: how do you specify a void return type for TResult? The following doesn't work:

public static void OtherFunction(int a, string b) { ... } var del = new Func<int, string, void>(OtherFunction); 

Answer 1

If there is no return type, you want Action<int,string>:

var del = new Action<int, string>(OtherFunction); 

or just:

Action<int, string> del = OtherFunction; 

Answer 2

You have to use Action< T > if you want to return void.