How to call a method overload based on closed generic type?

Question

Suppose I have three methods:

void Foo(MemoryStream v) {Console.WriteLine (\"MemoryStream\");}
void Foo(Stream v)       {Console.WriteLine (\"Stream\");}
void Fo         


        

Answer 1

This is not a "pretty" answer (indeed, since this is kinda subverting the intent of generics, it is hard to find a pretty answer inside the language), but you could perhaps code the overload lookups via a dictionary:

static readonly Dictionary> overloads
    = new Dictionary> {
        {typeof(Stream), o => Foo((Stream)o)},
        {typeof(MemoryStream), o => Foo((MemoryStream)o)}
    };
public static void Bar() {
    Action