protected override void RemoveItem(int index)
{
if (IsNotificationsSuspended)
{
_IsDirty = true;
}
else
{
var collectionChangingEventArgs = new CollectionChangingEventArgs <T>(Items[index], index, CollectionChangeAction.Remove);
CollectionChanging(this, collectionChangingEventArgs);
if (collectionChangingEventArgs.Cancel)
{
return;
}
}
base.RemoveItem(index);
}
protected override void ClearItems()
{
if (IsNotificationsSuspended)
{
_IsDirty = true;
}
else
{
var collectionChangingEventArgs = new CollectionChangingEventArgs <T>(default(T), 0, CollectionChangeAction.Refresh);
CollectionChanging(this, collectionChangingEventArgs);
if (collectionChangingEventArgs.Cancel)
{
return;
}
}
base.ClearItems();
}
protected override void InsertItem(int index, T item)
{
if (IsNotificationsSuspended)
{
_IsDirty = true;
base.InsertItem(index, item);
}
else
{
var collectionChangingEventArgs = new CollectionChangingEventArgs <T>(item, index, CollectionChangeAction.Add);
CollectionChanging(this, collectionChangingEventArgs);
if (collectionChangingEventArgs.Cancel)
{
return;
}
base.InsertItem(index, collectionChangingEventArgs.Item);
}
}