private static void OnNotifyDetailsTemplatePropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
DataGridRow row = (DataGridRow)d;
row.NotifyPropertyChanged(row, e, NotificationTarget.Rows | NotificationTarget.DetailsPresenter);
// It only makes sense to fire UnloadingRowDetails if the row details are already loaded. The same is true for LoadingRowDetails,
// since making row details visible will take care of firing LoadingRowDetails.
if (row.DetailsLoaded &&
d.GetValue(e.Property) == e.NewValue)
{
if (row.DataGridOwner != null)
{
row.DataGridOwner.OnUnloadingRowDetailsWrapper(row);
}
if (e.NewValue != null)
{
// Invoke LoadingRowDetails, but only after the details template is expanded (so DetailsElement will be available).
Dispatcher.CurrentDispatcher.BeginInvoke(new DispatcherOperationCallback(DataGrid.DelayedOnLoadingRowDetails), DispatcherPriority.Loaded, row);
}
}
}
private static void OnIsSelectedChanged(object sender, DependencyPropertyChangedEventArgs e)
{
DataGridRow row = (DataGridRow)sender;
bool isSelected = (bool)e.NewValue;
if (isSelected && !row.IsSelectable)
{
throw new InvalidOperationException(SR.Get(SRID.DataGridRow_CannotSelectRowWhenCells));
}
DataGrid grid = row.DataGridOwner;
if (grid != null && row.DataContext != null)
{
DataGridAutomationPeer gridPeer = UIElementAutomationPeer.FromElement(grid) as DataGridAutomationPeer;
if (gridPeer != null)
{
DataGridItemAutomationPeer rowItemPeer = gridPeer.GetOrCreateItemPeer(row.DataContext);
if (rowItemPeer != null)
{
rowItemPeer.RaisePropertyChangedEvent(
System.Windows.Automation.SelectionItemPatternIdentifiers.IsSelectedProperty,
(bool)e.OldValue,
isSelected);
}
}
}
// Update the header's IsRowSelected property
row.NotifyPropertyChanged(row, e, NotificationTarget.Rows | NotificationTarget.RowHeaders);
// This will raise the appropriate selection event, which will
// bubble to the DataGrid. The base class Selector code will listen
// for these events and will update SelectedItems as necessary.
row.RaiseSelectionChangedEvent(isSelected);
}
