C#: Restricting Types in method parameters (not generic parameters)

Question

I\'d like to code a function like the following

public void Foo(System.Type t where t : MyClass)
{ ... }

In other words, the argument type

Answer 1

What you want could theoretically be done with attributes. But this is much clearer (imo) and does exactly the same thing:

public void Foo(MyClass m) {
   Type t = m.GetType();
   // ...
}