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  1. // based on https://h...content-available-to-author-only...r.ru/post/209914/
  2. // for http://ru.stackoverflow.com/a/589005/178988
  3.  
  4. using System;
  5.  
  6. public class Container
  7. {
  8. 	public Enumerator GetEnumerator()
  9. 	{
  10. 		return new Enumerator();
  11. 	}
  12. }
  13.  
  14. public struct Enumerator : IDisposable
  15. {
  16. 	public bool MoveNext()
  17. 	{
  18. 		return false;
  19. 	}
  20.  
  21. 	public object Current
  22. 	{
  23. 		get { return null; }
  24. 	}
  25.  
  26. 	public void Dispose()
  27. 	{
  28. 		Console.WriteLine("Dispose");
  29. 	}
  30. }
  31.  
  32. public class Test
  33. {
  34.     public static void Main()
  35.     {
  36.         var items = new Container();
  37.  
  38.         var enumerator = items.GetEnumerator();
  39.  
  40.         using (enumerator as IDisposable)
  41.         {
  42.             var exists = enumerator.MoveNext();
  43.  
  44.             if (exists)
  45.             {
  46.                 do
  47.                 {
  48.                     var item = enumerator.Current;
  49.                     exists = enumerator.MoveNext();
  50.  
  51.                     Console.WriteLine(exists ? "{0}" : "{0} is the last one", item);
  52.                 } while (exists);
  53.             }
  54.         }
  55.  
  56.         Console.WriteLine("Done");
  57.     }
  58. }
Success #stdin #stdout 0.01s 29664KB
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Standard input is empty
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Dispose
Done
https://ideone.com/d2rvKT
language:
C# (gmcs 5.20.1)
created:
7 years ago
visibility:
public

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