public ReadOnlyIdentityCollection(IdentityCollection <T> collection)
{
identityCollection = collection ?? throw new ArgumentNullException(nameof(collection) + " can not be null");
identityCollection.CollectionChangeAdded += IdentityCollection_CollectionChangeAdded;
identityCollection.CollectionChangeRemoved += IdentityCollection_CollectionChangeRemoved;
identityCollection.CollectionChangeCleared += IdentityCollection_CollectionChangeCleared;
}
public override void Close()
{
if (identityCollection != null)
{
identityCollection.CollectionChangeAdded -= IdentityCollection_CollectionChangeAdded;
identityCollection.CollectionChangeRemoved -= IdentityCollection_CollectionChangeRemoved;
identityCollection.CollectionChangeCleared -= IdentityCollection_CollectionChangeCleared;
identityCollection = null;
}
base.Close();
}
/// <summary>
/// Default constructor, uses <see cref="GuidIdentifier"/> as identifier.
/// </summary>
public IdentityTreeItem()
{
Identifier = new GuidIdentifier();
children = new IdentityCollection <T>();
Children = children;
}