Classes (but not structs) support the concept of inheritance.
A class that derives from the base class automatically has all the public, protected, and internal members of the base class except its constructors and destructors.
In C# one class can only inherit from a single class.
The following code defines a Person class. Person class has all common fields for all person types.
class Person{
public string name;
}
When declaring the Employee class we can build the employee type based on person type.
class Employee:Person{
public string companyName;
}
Employee inherits the name field from Person.