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

This is like passing a pointer to a pointer in C. In .NET this will allow you to change what the original T refers to, personally though I think if you are doing that in .NET you have probably got a design issue!