C# difference between == and Equals()

Question

I have a condition in a silverlight application that compares 2 strings, for some reason when I use == it returns false while .Equals()

Answer 1

Firstly, there is a difference. For numbers

> 2 == 2.0
True

> 2.Equals(2.0)
False

And for strings

> string x = null;
> x == null
True

> x.Equals(null)
NullReferenceException

In both cases, == behaves more usefully than .Equals