public void AddRange(IEnumerable <T> collection)
{
if (collection == null)
{
throw new ArgumentException("collection");
}
var items = collection.ToArray();
if (items.Length == 0)
{
return;
}
foreach (var item in items)
{
ValidateItem(item);
}
var args = new CollectionItemBatchEventArgs <T>(items);
OnItemsAdding(args);
((List <T>)Items).AddRange(items);
OnItemsAdded(args);
OnChanged();
}
protected void OnItemsAdded(CollectionItemBatchEventArgs <T> args)
{
Fire(ItemsAdded, args);
}