protected void NotifyCollectionChanged(object sender)
{
NotifyCollectionReset(sender);
if (CollectionChangedInternal == null)
{
return;
}
CollectionChangedInternal.Invoke(sender, this);
}
/// <summary> Check and assert for reentrant attempts to change this collection. </summary>
/// <exception cref="InvalidOperationException"> raised when changing the collection
/// while another collection change is still being notified to other listeners </exception>
private void CheckReentrancy()
{
if (_monitor.Busy)
{
// we can allow changes if there's only one listener - the problem
// only arises if reentrant changes make the original event args
// invalid for later listeners. This keeps existing code working
// (e.g. Selector.SelectedItems).
if ((CollectionChangedInternal != null) && (CollectionChangedInternal.GetInvocationList().Length > 1))
{
throw new InvalidOperationException("RowDefinitionCollection Reentrancy not allowed");
}
}
}
protected void NotifyCollectionChanged(object sender, NotifyCollectionChangedAction action, IEnumerable <T> changedItems)
{
//NotifyCollectionReset( sender);
if (CollectionChangedInternal != null)
{
CollectionChangedInternal.Invoke(sender, this);
}
if (CollectionChanged == null)
{
return;
}
CollectionChanged.Invoke(this, new NotifyCollectionChangedEventArgs(action, changedItems));
}
