Why use the 'ref' keyword when passing an object?

Question

If I am passing an object to a method, why should I use the ref keyword? Isn\'t this the default behaviour anyway?

For example:

class Program
{
    s         


        

Answer 1

Ref denotes whether the function can get its hands on the object itself, or only on its value.

Passing by reference is not bound to a language; it's a parameter binding strategy next to pass-by-value, pass by name, pass by need etc...

A sidenote: the class name TestRef is a hideously bad choice in this context ;).