class MyBaseClass

{

    // virtual auto-implemented property. Overrides can only

    // provide specialized behavior if they implement get and set accessors.

    public virtual string Name { get; set; }

    // ordinary virtual property with backing field

    private int num;

    public virtual int Number

    {

        get { return num; }

        set { num = value; }

    }

}

class MyDerivedClass : MyBaseClass

{

    private string name;

   // Override auto-implemented property with ordinary property

   // to provide specialized accessor behavior.

    public override string Name

    {

        get

        {

            return name;

        }

        set

        {

            if (value != String.Empty)

            {

                name = value;

            }

            else

            {

                name = "Unknown";

            }

        }

    }

}