Question

In C#:

Is it possible define a method that input parameter is any method?

Let me better description:

I want a method with signature

bool IsDoit(var method)
{
    try
    {
        method(...);
        return true;
    }
    catch{return false;}
}

This get a method and return a boolean that is throw exception or not!

Generic Delegate? Generic Action? Generic Func?

Do You have any idea or it is not possible?

Answer 1

What would go in the “…” here? It sounds like you want a delegate of some description – and that delegate signature should match the one of the method you want to call. For example:

static bool IsDoit(Action method)
{
    try
    {
        method();
        return true;
    }
    catch
    {
        return false;
    }
}

That will allow method group conversions for any parameterless void method:

if (IsDoIt(SomeMethodWithNoParameters))
{
}

If the caller wants to call a method which takes other parameters, they can use a lambda expression to wrap it in an Action:

if (IsDoIt(() => MethodWithParameters("first", "second"))
{
}

Personally I’m not at all sure about the wisdom of this design in the first place, mind you – catching exceptions and swallowing them without any sort of logging seems like a really bad idea to me.