Inheriting from classes

The Person type we created earlier is implicitly derived (inherited) from System.Object. Now, we will create a new class that inherits from Person.

Add a new class named Employee.cs to the PacktLibrary project.

Modify its code as shown in the following code:

using System; 
 
namespace Packt.CS7 
{ 
   public class Employee : Person 
   { 
   } 
}

Add statements to the Main method to create an instance of the Employee class:

Employee e1 = new Employee  
{ 
   Name = "John Jones",  
   DateOfBirth = new DateTime(1990, 7, 28)  
};
e1.WriteToConsole(); 

Run the console application and view the output:

John Jones was born on Saturday, 28 July 1990

Note that the Employee class has inherited all the members of Person.

Extending classes

Now, we will add some employee-specific members to extend the class.

In the Employee class, add the following code to define two properties:

public string EmployeeCode { get; set; } 
public DateTime HireDate { get; set; } 

Back in the Main method, add...