Use a property in an interface

/*
C#: The Complete Reference 
by Herbert Schildt 

Publisher: Osborne/McGraw-Hill (March 8, 2002)
ISBN: 0072134852
*/
// Use a property in an interface. 
 
using System; 
 
public interface ISeries { 
  // an interface property 
  int next { 
    get; // return the next number in series 
    set; // set next number 
  } 
} 
 
// Implement ISeries. 
class ByTwos : ISeries { 
  int val; 
 
  public ByTwos() { 
    val = 0; 
  }  
 
  // get or set value 
  public int next { 
    get {  
      val += 2; 
      return val; 
    } 
    set { 
      val = value; 
    } 
  } 
} 
 
// Demonstrate an interface property. 
public class SeriesDemo3 { 
  public static void Main() { 
    ByTwos ob = new ByTwos(); 
 
    // access series through a property 
    for(int i=0; i < 5; i++) 
      Console.WriteLine("Next value is " + ob.next); 
 
    Console.WriteLine("\nStarting at 21"); 
    ob.next = 21; 
    for(int i=0; i < 5; i++) 
      Console.WriteLine("Next value is " + ob.next); 
  } 
}

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Use a property in an interface : Interface « Class Interface « C# / C Sharp

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