public static IObservable <IEvent <QueryItemsEventArgs> > GetQueryItems(
this DataGridVirtualizingCollectionView view)
{
return
(Observable.FromEvent((EventHandler <QueryItemsEventArgs> h) => new EventHandler <QueryItemsEventArgs>(h),
h => { view.QueryItems += h; Debug.WriteLine(" -> Attached: " + h); },
h => { view.QueryItems -= h; Debug.WriteLine(" -> DeAttached: " + h); }));
}
public XceedDataGrid()
{
InitializeComponent();
Loaded += new RoutedEventHandler(XceedDataGrid_Loaded);
_ModelColView = new DataGridVirtualizingCollectionView(typeof(Product));
var queryItems = _ModelColView.GetQueryItems();
var queryItemCount = _ModelColView.GetQueryItemCount().SkipUntil(queryItems);
queryItemCount.Subscribe(v =>
{
v.EventArgs.Count = 1;
});
queryItems.Subscribe(v => v.EventArgs.AsyncQueryInfo.EndQuery(new[] { new Product()
{
Description = "aaa"
} }));
}
public XceedTestViewModel(IAccountBalanceDataService dataService)
{
Accounts = dataService.AccountPeople;
_objects = new List <TestViewModel>();
for (var i = 0; i < 200; i++)
{
_objects.Add(new TestViewModel {
Id = i, Name = "test", AccountBalance = 1000 * i
});
}
ViewSource = new DataGridVirtualizingCollectionView(typeof(AccountPeopleSelector), false, 50, 1000);
ViewSource.QueryItems += ViewSourceOnQueryItems;
ViewSource.QueryItemCount += ViewSourceOnQueryItemCount;
Accounts.Subscribe(update =>
{
if (update.IsRowUpdate())
{
ViewSource.Refresh();
}
});
}
internal DataGridVirtualizingCollectionViewGroupRoot(DataGridVirtualizingCollectionView collectionView, bool isBottomLevel)
: base(null, -1, 0, null, -1, isBottomLevel)
{
m_parentCollectionView = collectionView;
m_virtualPageManager = new DataGridPageManager(collectionView);
}