private void OnSelectedPageChanged()
{
try
{
var index = Configuration.Pages.IndexOf(SelectedPage);
for (int i = 0; i < index; i++)
{
var page = Configuration.Pages.ElementAt(i);
if (!page.Validate())
{
Dispatcher.CurrentDispatcher.BeginInvoke(DispatcherPriority.ContextIdle, new Action(() => SelectedPage = page));
return;
}
}
IsLastPage = index == Configuration.Pages.Count - 1;
}
finally
{
NextPageCommand.RaiseCanExecuteChanged();
PrevPageCommand.RaiseCanExecuteChanged();
}
}
private void OnPropertyChanged(object sender, PropertyChangedEventArgs e)
{
NextPageCommand.RaiseCanExecuteChanged();
PrevPageCommand.RaiseCanExecuteChanged();
ButtonNext.Visibility = NextPageCommand.CanExecute(null) ? Visibility.Visible : Visibility.Hidden;
ButtonPrev.Visibility = PrevPageCommand.CanExecute(null) ? Visibility.Visible : Visibility.Hidden;
LabelPage.Content = PageCount == 1 ? null : $"{Page + 1}/{PageCount}";
if (ItemsSource == null)
{
return;
}
var pageSize = PageSize;
PagedItemSource =
new ObservableCollection <object>(
ItemsSource.OfType <object>().Skip(Page * pageSize).Take(pageSize).ToList());
if (e.PropertyName == nameof(ItemsSource))
{
Page = 0;
}
}