using System; 
using System.Collections.Generic; 

public class FavoriteManager 
{ 
  List<Favorite> favs = new List<Favorite>(); 

  public int Length 
  { 
    get 
    { 
      return favs.Count; 
    } 
  } 

  public Favorite this[int i] 
  { 
    set 
    { 
      if (i < 0 || i >= favs.Count) 
        throw new ArgumentOutOfRangeException("i", i, "Ungültiger Index"); 
      favs[i] = value; 
    } 

    get 
    { 
      if (i < 0 || i >= favs.Count) 
        throw new ArgumentOutOfRangeException("i", i, "Ungültiger Index"); 
      return favs[i]; 
    } 
  } 
}