How can I efficiently force a UI refresh of individual rows?

[AlexanderBlackman]

I have some bulk commands that change all selected rows at once.
Right now, the only way I know to force a refresh is to reload the entire ItemsSource, but this isn't efficient.
There must be a better way, but changing UpdateSourceTrigger in a column's datatemplate doesn't work, nor does UpdateLayout

private void HardRefreshItems() //Very wasteful
    {
        _dispatcherQueue.TryEnqueue(() =>
        {
            var items = this.ItemsSource;
            var selected = SelectedItems.Cast<TodoItem>().ToList();
            this.ItemsSource = null;
            this.ItemsSource = items;
            _updatingSelection = true;
            foreach (var item in selected.Where(i => Items.Contains(i)))
            {
                this.SelectedItems.Add(item);
            }
            _updatingSelection = false;
            _messenger.Send(message: new TodoSelectionChangedMessage(selected, fromView: true));

        });
    } 

[w-ahmad]

@AlexanderBlackman, I'm afraid I couldn't understand the problem that you are facing, could you give some more information about your implementation?

[AlexanderBlackman]

Sorry, I missed your message.
The issue is normally changed rows only visually update once they've been moved away from, which is great when editing individually, but doesn't work well for operations changing many rows at once.

[w-ahmad]

here what I understood.
If you want to update cell values from code behind logic then: if you have implemented INotifyPropertyChanged on your models then it is not difficult to update individual items from code behind.

it would be very helpful to understand issue if you can upload a full example or working application.

[AlexanderBlackman]

Thank you, I ended up doing that.