private void IdentityCollection_CollectionChangeAdded(object sender, IdentityCollectionAddEventArgs <T> e)
{
List <T> list = new List <T>(e.AddedItems);
IdentityCollectionAddEventArgs <T> args =
new IdentityCollectionAddEventArgs <T>(list);
CollectionChangeAdded?.Invoke(this, args);
}
/// <summary>
/// Adds given item to collection, if collection does not contain this item.
/// </summary>
/// <param name="item">Item to add to collection.</param>
public void AddItem(T item)
{
List <T> list = new List <T>();
if (Add(item))
{
list.Add(item);
IdentityCollectionAddEventArgs <T> args =
new IdentityCollectionAddEventArgs <T>(list);
CollectionChangeAdded?.Invoke(this, args);
}
}
/// <summary>
/// Adds given items to collection, if collection does not contain these items.
/// </summary>
/// <param name="items">Items to add to collection.</param>
public void AddRange(IEnumerable <T> items)
{
List <T> list = new List <T>();
foreach (T item in items)
{
if (Add(item))
{
list.Add(item);
}
}
if (list.Count > 0)
{
IdentityCollectionAddEventArgs <T> args =
new IdentityCollectionAddEventArgs <T>(list);
CollectionChangeAdded?.Invoke(this, args);
}
}
