Can you use ScrollIntoView() with a PagedCollectionView in a Silverlight DataGrid?

datagrid, datagridview, silverlight

Solution

Yes, it is possible to scroll items into view when the item source is a `PagedCollectionView`. I use both the group scrolling method you describe and I scroll the currently selected item into view. To do this, I have a helper method that uses the dispatcher to invoke the operation as follows:

private void ScrollCurrentSelectionIntoView()
{
    this.dataGrid.Dispatcher.BeginInvoke(() =>
    {
        this.dataGrid.ScrollIntoView(
            this.dataGrid.SelectedItem,
            this.dataGrid.CurrentColumn);
    });
}

I used `BeginInvoke` because otherwise, the call to `ScrollIntoView` would fail when called directly from an event handler (presumably because the `DataGrid` hadn't properly updated its state for the event being handled). This approach ensures that the current event handling completes properly before invoking the scroll.

Problem

Is it possible to scroll to a particular row (by object identity) in a Silverlight `DataGrid` that has an `ItemsSource` which is a `PagedCollectionView`. I am loading a list of orders that are grouped by day/status etc. I need to be able to scroll to a particular order. ``` var pcv = new PagedCollectionView(e.Result.Orders); gridOrders.ItemsSource = pcv; ``` Unfortunately, `ScrollIntoView(order)` doesn't work because of the `PagedCollectionView`. An article on DataGrid from MSDN shows that it is possible to scroll to a group in a `PagedCollectionView`, but that's not really much use. ``` foreach (CollectionViewGroup group in pcv.Groups) { dataGrid1.ScrollIntoView(group, null); dataGrid1.CollapseRowGroup(group, true); } ``` Is there a way to do this ?

Original source