virtual properties

Question

I have used and learned only virtual methods of the base class without any knowledge of virtual properties used as

class A
{
   public virtual ICollection<         


        

Answer 1

In object-oriented programming, a virtual property is a property whose behavior can be overridden within an inheriting class. This concept is an important part of the polymorphism portion of object-oriented programming (OOP).

look at the example below:

public class BaseClass
{

    public int Id { get; set; }
    public virtual string Name { get; set; }

}

public class DerivedClass : BaseClass
{
    public override string Name
    {
        get
        {
            return base.Name;
        }

        set
        {
            base.Name = "test";
        }
    }
}

at the presentation level:

        DerivedClass instance = new DerivedClass() { Id = 2, Name = "behnoud" };

        Console.WriteLine(instance.Name);

        Console.ReadKey();

the output will be "test" because the "Name" property has been overridden in the derived class(sub class).