New property in C# class

Question

How to add a new property to an existing class?

Answer 1

Sorry, almost forgotten to answer. If a class is sealed, it is restricted not to be implemented - usually for good reasons. If you have no else option, you can only copy it.

Answer 2

Since you've already finished some courses, I guess you do not mean your own class but a third party-class? Then I'd simply implement it 😉 (drive a child class from it and use this instead - there you can add whatever you want).

Answer 3

Sandra Meyer Thanks, it helped:) but what should I do if class is sealed?🙃