How Can I inherit the string class?

Question

I want to inherit to extend the C# string class to add methods like WordCount() and several many others but I keep getting this error:

Er

Answer 1

What's wrong with a helper class? As your error message tells you, String is sealed, so your current approach will not work. Extension methods are your friend:

myString.WordCount();


static class StringEx
{
    public static int WordCount(this string s)
    {
        //implementation.
    }
}