IndexOf method returns 0 when it should had return -1 in C# / Java

Question

A friend of mine came to me with this strange behavior which i can\'t explain, any insight view would be appreciated.

Im running VS 2005 (C# 2.0), the following code

Answer 1

Quote from the C# documentation:

If value is Empty, the return value is 0.

The behavior that you describe is entirely as expected (at least in C#).