Alternative to inheriting from string

[Mike]

Hello,

I would like to write a string-like class that will only allow certain
string values, (for example, specified with a regular expression). I'd
still like it to behave like a string, I just don't want to ensure the
validity of it's value. Since you can't inherit from string, what would be
the best way to approach this?

Mike

 

[Gabriele G. Ponti]

"The best way" is always relative to the domain of your application, but my
suggestion would be to create a class that wraps around a regular string.
You probably want to implement the IComparable and IConvertible interfaces.