private static void Vs_CollectionChanged(object sender, System.Collections.Specialized.NotifyCollectionChangedEventArgs e)
{
switch (e.Action)
{
case System.Collections.Specialized.NotifyCollectionChangedAction.Add:
Сharacteristics сharacteristicsNew = e.NewItems[0] as Сharacteristics;
Console.WriteLine($"Произошло добавление объекта {сharacteristicsNew}");
break;
case System.Collections.Specialized.NotifyCollectionChangedAction.Remove:
Сharacteristics OLDсharacteristics = e.OldItems[0] as Сharacteristics;
Console.WriteLine($"Произошло удаление объекта{OLDсharacteristics}");
break;
case System.Collections.Specialized.NotifyCollectionChangedAction.Replace:
Сharacteristics сharacteristicsN = e.NewItems[0] as Сharacteristics;
Сharacteristics Oсharacteristics = e.OldItems[0] as Сharacteristics;
Console.WriteLine($"Произошло замена объекта {Oсharacteristics} на новый объект {сharacteristicsN}");
break;
case System.Collections.Specialized.NotifyCollectionChangedAction.Move:
break;
case System.Collections.Specialized.NotifyCollectionChangedAction.Reset:
break;
default:
break;
}
}
static void Main(string[] args)
{
#region 1
Computer <int> cs = new Computer <int>();
cs.Add(1);
cs.Add(2);
cs.Add(3);
cs.Add(4);
foreach (var k in cs)
{
Console.WriteLine(k);
}
cs.Remove(1);
Console.WriteLine("\nПосле удаления элемента:");
foreach (var k in cs)
{
Console.WriteLine(k);
}
if (cs.Contains(2))
{
Console.WriteLine("\nЭлемент 2 присутствует в данной коллекции\n");
}
else
{
Console.WriteLine("Элемент 2 отсутствует в данной коллекции\n");
}
#endregion
#region 2-3
//2
HashSet <object> hashSet = new HashSet <object>();
hashSet.Add("ProcolC#"); hashSet.Add("asdasdasd"); hashSet.Add('F'); hashSet.Add(true); hashSet.Add(54454);
int i = 1;
foreach (object o in hashSet)
{
Console.WriteLine($"{i}. {o} ");
i++;
}
Console.WriteLine("\n");
i = 0;
int p = 0;
while (i < (2 - p))
{
hashSet.Remove(hashSet.ElementAt(i));
p++;
}
List <object> list = new List <object>();
foreach (object o in hashSet)
{
list.Add(o);
}
Console.WriteLine("List:");
foreach (object o in list)
{
Console.WriteLine(o);
}
Console.WriteLine("\n");
object value = 54454;
if (list.IndexOf(value) >= 0)
{
Console.WriteLine("Найдено, индекс в листе: " + list.IndexOf(value));
}
else
{
Console.WriteLine("Не найдено");
} Console.WriteLine("\n");
//Console.ReadLine();
ObservableCollection <Сharacteristics> vs = new ObservableCollection <Сharacteristics>
{
new Сharacteristics()
{
characteristics = new List <string>()
{
"Asus", "DEAL"
}
},
new Сharacteristics()
{
characteristics = new List <string>()
{
"LENOVO", "ASER"
}
},
new Сharacteristics()
{
characteristics = new List <string>()
{
"Canon", "Samsung"
}
}
};
vs.CollectionChanged += Vs_CollectionChanged;
vs.Add(new Сharacteristics()
{
characteristics = new List <string>()
{
"Aple", "Honor"
}
});
vs.RemoveAt(1);
vs[0] = new Сharacteristics()
{
characteristics = new List <string>()
{
"HP", "MiBook"
}
};
Console.WriteLine("Теперь коллекция выглядит так:");
foreach (var o in vs)
{
Console.WriteLine(o);
}
Console.ReadLine();
}