Refresh Entire Column

[Terry Foster]

Hi,

Is there a way to refresh an entire column (bindings, styles, etc.) without having to raise a PropertyChanged event on each object that the cells of the column are bound to?  I understand the virtual nature of the grid, which is why I'd prefer the grid to handle the refreshing of the visible cells instead of me looping through my entire object collection and raising PropertyChanged events, when only a small subset are even visible.  I've managed to achieve the behavior I want by hiding and then showing the column, but I suspect (would hope) there's a more elegant way.

Thanks,
Terry

[Yavor Georgiev]

Hello Terry,

 Unfortunately, programmatically hiding and showing the column is the only way to refresh the cells only in that particular column. The alternative is to call RadGridView.Items.Refresh(), which is equivalent to the source collection raising CollectionChanged with NotifyCollectionChangedAction.Reset. However, this approach can have unwanted behavior, depending on your scenario.

All the best,
Yavor Georgiev
the Telerik team

[blaise]

Thank you for the type, it is a good fix when we are working with async loaded combobox.
With this scenario, if the combobox items source is not loaded when the gridview items are loaded, then the column display names are not painted. Here is essential part of a code snippet I use in order to autogenerate some comboboxes.

var column = new GridViewComboBoxColumn
            {
                DisplayMemberPath = displayname,
                SelectedValueMemberPath = assoc.OtherKey,
                DataMemberBinding = new Binding(assoc.ThisKey),
            };

var endedcommand = new DelegateCommand(obj =>
                         {
                           column.IsVisible = false;
                           column.IsVisible = true;
                         }
);

column.ItemsSource = sourceprovider.ItemsSource(type, propname, endedcommand);