Question

I tried using inheritance in all my object class. below are my example

public class Member : Order
{
   private string _employeeId;
   private string _employeeName;

   public string EmployeeId
   {
       get { return _employeeId; }
       set { _employeeId = value; }
   }

   public string EmployeeName
   {
       get { return _employeeName; }
       set { _employeeName = value; }
   }

}


public class Order
{
    private int _id;
   private string _itemName;

   public string ID
   {
       get { return _id; }
       set { _id = value; }
   }

   public string ItemName
   {
       get { return _itemName; }
       set { _itemName= value; }
   }

}

Answer 1

Inheritance makes an “IS A” relation between classes.

It is highly unlikely that “a Member is an Order”, so you’re not using it correctly.

Without further information it’s hard to give you better advice.

A more plausible model would be :

• An Employee is a Person
• A Member is an Employee (doubt here)
• A Member has 0 or more Orders

---

class Person { }
class Employee: Person { }
class Member : Employee
{
    public IList<Order> Orders { get; private set; }
}

class Order
{
   public int MemberId { get; private set; }
}