What Does Sealed Class Mean?

A sealed class, in C#, is a class that cannot be inherited by any class but can be instantiated.

Techopedia Explains Sealed Class

Unlike a struct, which is implicitly sealed, a sealed class is declared with the keyword, “sealed” to prevent accidental inheritance of the class. A sealed class can be useful only if it has methods with public-level accessibility. A sealed class cannot be an abstract class as the abstract class is intended to be derived by another class that provides implementation for the abstract methods and properties.

  • The class is staticThe class contains inherited members that represent sensitive informationThe class is queried to retrieve its attributes through the reflection methodThe class inherits many virtual members that need to be sealed