/// <summary>
/// Initializes a new instance of the <see cref="ObservableListChangedEventArgs<T>"/> class.
/// </summary>
/// <param name="listChangedType">Type that specifies how the list changed.</param>
/// <param name="item">The item, depends on <paramref name="listChangedType"/>.</param>
/// <param name="index">The index of the item, depends on <paramref name="listChangedType"/>.</param>
public ObservableListChangedEventArgs(ObservableListChangedType listChangedType, T item, int index)
{
_item = item;
_listChangedType = listChangedType;
_index = index;
}
/// <summary>
/// Initializes a new instance of the <see cref="ObservableListChangedEventArgs<T>"/> class.
/// </summary>
/// <param name="listChangedType">Type that specifies how the list changed.</param>
public ObservableListChangedEventArgs(ObservableListChangedType listChangedType)
{
_index = -1;
}
