public void AddRange(IEnumerable <T> items)
{
List <T> added = new List <T>();
foreach (T item in items)
{
if (Add(item, false))
{
added.Add(item);
}
}
if (added.Count > 0)
{
SelectionCollectionAddEventArgs <T> args =
new SelectionCollectionAddEventArgs <T>(added);
CollectionChangeAdded?.Invoke(this, args);
}
}
private bool Add(T item, bool sendEvent)
{
if (!allItems.Any(x => x.Id.Equals(item.Id)))
{
allItems.Add(item);
if (sendEvent)
{
SelectionCollectionAddEventArgs <T> args =
new SelectionCollectionAddEventArgs <T>(new List <T>()
{
item
});
CollectionChangeAdded?.Invoke(this, args);
}
return(true);
}
return(false);
}