Sealed class Modifier

A sealed class modifiers prevents the class from getting inherited, cases marked with sealed cannot be derived by other classes, trying to do so will result in a complier error.

In the following example we try to define a sealed class and try to inherit the same from a derived class.

    sealed class SealedBaseClass

    {

    }

    //

    class SealedDerivedClass : SealedBaseClass

    {

    }

Trying to inherit a sealed class will result in the following error.

Error: 'SealedDerivedClass': cannot derive from sealed type 'SealedBaseClass'