/* C#: The Complete Reference by Herbert Schildt Publisher: Osborne/McGraw-Hill (March 8, 2002) ISBN: 0072134852 */ // Explicitly implement an interface member. using System; interface IEven { bool isOdd(int x); bool isEven(int x); } class MyClass : IEven { // explicit implementation bool IEven.isOdd(int x) { if((x%2) != 0) return true; else return false; } // normal implementation public bool isEven(int x) { IEven o = this; // reference to invoking object return !o.isOdd(x); } } public class Demo { public static void Main() { MyClass ob = new MyClass(); bool result; result = ob.isEven(4); if(result) Console.WriteLine("4 is even."); else Console.WriteLine("3 is odd."); // result = ob.isOdd(); // Error, not exposed } }