illustrates interface member hiding

/*
Mastering Visual C# .NET
by Jason Price, Mike Gunderloy

Publisher: Sybex;
ISBN: 0782129110
*/

/*
  Example8_8.cs illustrates interface member hiding
*/

using System;


// define the IDrivable interface
public interface IDrivable
{
  void TurnLeft();
}


// define the ISteerable interface (derived from IDrivable)
public interface ISteerable : IDrivable
{
  new void TurnLeft();  // hides TurnLeft() in IDrivable
}

// Car class implements the IMovable interface
class Car : ISteerable
{

  // explicitly implement the TurnLeft() method of the ISteerable interface
  void ISteerable.TurnLeft()
  {
    Console.WriteLine("ISteerable implementation of TurnLeft()");
  }

  // implement the TurnLeft() method of the IDrivable interface
  public void TurnLeft()
  {
    Console.WriteLine("IDrivable implementation of TurnLeft()");
  }

}


public class Example8_8
{

  public static void Main()
  {

    // create a Car object
    Car myCar = new Car();

    // call myCar.TurnLeft()
    Console.WriteLine("Calling myCar.TurnLeft()");
    myCar.TurnLeft();

    // cast myCar to ISteerable
    ISteerable mySteerable = myCar as ISteerable;
    Console.WriteLine("Calling mySteerable.TurnLeft()");
    mySteerable.TurnLeft();

    // cast myCar to IDrivable
    IDrivable myDrivable = myCar as IDrivable;
    Console.WriteLine("Calling myDrivable.TurnLeft()");
    myDrivable.TurnLeft();

  }

}

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illustrates interface member hiding : Interface « Class Interface « C# / C Sharp

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