How to know when a DataGridRow is clicked?

Question

I am using the Windows Community Toolkit WinUI DataGrid control. I would like to run some code when a row is clicked. How can I do that?

I have tried:

• SelectionChanged event: Only works the first time the row is clicked, as after that the same row is being selected. Also gets triggered if the row is moved to via the keyboard.
• CurrentCellChanged event: Only works the first time a cell is clicked, as after that clicking the same cell does not change the current cell. (And I could not find a way to clear the current cell programmatically.)
• Answers like this show how to add row event handlers via style in WPF, but this does not work in WinUI.

Any ideas?

Answer 1

I ended up using the PointerReleased event. (Previously I had discarded this event as I could not figure out which row was clicked.)

<ctWinUI:DataGrid
    PointerReleased="dgDesktops_PointerReleased"
    ...>

And to find the DataGridRow that was clicked I traverse the visual tree:

private async void dgDesktops_PointerReleased(object sender, PointerRoutedEventArgs e)
{
    DataGridRow clickedRow = ViewUtils.FindParent<DataGridRow>((UIElement)e.OriginalSource);
    if (clickedRow != null)
    {
        MyModel rowModel = (MyModel)clickedRow.DataContext;
        // Do stuff
    }
}

public static T FindParent<T>(DependencyObject childElement) where T : Control
{
    DependencyObject currentElement = childElement;

    while (currentElement != null)
    {
        if (currentElement is T matchingElement)
        {
            return matchingElement;
        }

        currentElement = VisualTreeHelper.GetParent(currentElement);
    }

    return null;
}

Not the most elegant solution, but it works :)