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:

Error 1 'WindowsFormsApplication2.myString': cannot derive from sealed type 'string'

Is there any other way I can get past this ? I tried with string and String but it didn't work.

Answer 1

Another option could be to use an implicit operator.

Example:

class Foo {     readonly string _value;     public Foo(string value) {         this._value = value;     }     public static implicit operator string(Foo d) {         return d._value;     }     public static implicit operator Foo(string d) {         return new Foo(d);     } } 

The Foo class acts like a string.

class Example {     public void Test() {         Foo test = "test";         Do(test);     }     public void Do(string something) { } }