src\Framework\System\Windows\Controls\DataGridColumnHeaderCollection.cs (5)
216newArgs = new NotifyCollectionChangedEventArgs(e.Action, HeadersFromColumns(e.NewItems), e.NewStartingIndex);
220newArgs = new NotifyCollectionChangedEventArgs(e.Action, HeadersFromColumns(e.OldItems), e.OldStartingIndex);
224newArgs = new NotifyCollectionChangedEventArgs(e.Action, HeadersFromColumns(e.OldItems), e.NewStartingIndex, e.OldStartingIndex);
228newArgs = new NotifyCollectionChangedEventArgs(e.Action, HeadersFromColumns(e.NewItems), HeadersFromColumns(e.OldItems), e.OldStartingIndex);