NullReferenceException in DateTimePicker

[Streissi]

Hello, when i set the cursor in the TimePicker of the DateTimePicker Popup and use the left or right arrow keys to move a NullReferenceException occurres.

Version:

4.0.2

Stacktrace:

at Xceed.Wpf.Toolkit.DateTimeUpDown.IsCurrentValueValid() at Xceed.Wpf.Toolkit.Primitives.DateTimeUpDownBase1.OnPreviewKeyDown(KeyEventArgs e) at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target) at System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs) at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised) at System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args) at System.Windows.UIElement.RaiseTrustedEvent(RoutedEventArgs args) at System.Windows.Input.InputManager.ProcessStagingArea() at System.Windows.Input.InputManager.ProcessInput(InputEventArgs input) at System.Windows.Input.InputProviderSite.ReportInput(InputReport inputReport) at System.Windows.Interop.HwndKeyboardInputProvider.ReportInput(IntPtr hwnd, InputMode mode, Int32 timestamp, RawKeyboardActions actions, Int32 scanCode, Boolean isExtendedKey, Boolean isSystemKey, Int32 virtualKey) at System.Windows.Interop.HwndKeyboardInputProvider.ProcessKeyAction(MSG& msg, Boolean& handled) at System.Windows.Interop.HwndSource.CriticalTranslateAccelerator(MSG& msg, ModifierKeys modifiers) at System.Windows.Interop.HwndSource.OnPreprocessMessage(Object param) at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs) at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Int32 numArgs, Delegate catchHandler) at System.Windows.Threading.Dispatcher.LegacyInvokeImpl(DispatcherPriority priority, TimeSpan timeout, Delegate method, Object args, Int32 numArgs) at System.Windows.Threading.Dispatcher.Invoke(DispatcherPriority priority, Delegate method, Object arg) at System.Windows.Interop.HwndSource.OnPreprocessMessageThunk(MSG& msg, Boolean& handled) at System.Windows.Interop.ThreadMessageEventHandler.Invoke(MSG& msg, Boolean& handled) at System.Windows.Interop.ComponentDispatcherThread.RaiseThreadMessage(MSG& msg) at System.Windows.Threading.Dispatcher.PushFrameImpl(DispatcherFrame frame) at System.Windows.Window.ShowHelper(Object booleanBox) at System.Windows.Window.ShowDialog() at Pai.CGL.Hmi.Themes.DialogWindow.Prism.Services.Dialogs.IDialogWindow.ShowDialog() at Prism.Services.Dialogs.DialogService.ShowDialog(String name, IDialogParameters parameters, Action1 callback) in d:\a\1\s\Source\Wpf\Prism.Wpf\Services\Dialogs\DialogService.cs:line 26 at Pai.CGL.Hmi.ViewModels.DelayTimeViewModel.OnAddDelayTime() in D:\Tatmetal\CGL1\Source\panda_cgl\Pai.CGL.Hmi\ViewModels\DelayTimeViewModel.cs:line 368 at MS.Internal.Commands.CommandHelpers.CriticalExecuteCommandSource(ICommandSource commandSource, Boolean userInitiated) at System.Windows.Controls.MenuItem.InvokeClickAfterRender(Object arg) at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs) at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Int32 numArgs, Delegate catchHandler) at System.Windows.Threading.DispatcherOperation.InvokeImpl() at MS.Internal.CulturePreservingExecutionContext.CallbackWrapper(Object obj) at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx) at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx) at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state) at MS.Internal.CulturePreservingExecutionContext.Run(CulturePreservingExecutionContext executionContext, ContextCallback callback, Object state) at System.Windows.Threading.DispatcherOperation.Invoke() at System.Windows.Threading.Dispatcher.ProcessQueue() at System.Windows.Threading.Dispatcher.WndProcHook(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled) at MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled) at MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o) at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs) at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Int32 numArgs, Delegate catchHandler) at System.Windows.Threading.Dispatcher.LegacyInvokeImpl(DispatcherPriority priority, TimeSpan timeout, Delegate method, Object args, Int32 numArgs) at MS.Win32.HwndSubclass.SubclassWndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam) at MS.Win32.UnsafeNativeMethods.DispatchMessage(MSG& msg) at System.Windows.Threading.Dispatcher.PushFrameImpl(DispatcherFrame frame) at System.Windows.Application.RunDispatcher(Object ignore) at System.Windows.Application.RunInternal(Window window) at Pai.CGL.Hmi.App.Main()

XAML

<xtk:DateTimePicker Grid.Row="0" Grid.Column="3" Value="{Binding SelectedEndTime}" />

Control

[XceedBoucherS]

Hi,

I can see that the template is different from the standard DateTimePicker (the Up/Down buttons are side by side). If I use v4.0.2 from NuGet in a simple sample, I don't get this NullRefException when using the Arrow keys in the TimePicker of the DateTimePicker.

<xctk:DateTimePicker Value="{Binding SelectedEndTime}" />

`public partial class MainWindow : Window { public MainWindow() { InitializeComponent();

  this.DataContext = this;
}

public DateTime SelectedEndTime
{
  get;
  set;
}

}`

Can you confirm ?

[Streissi]

yes the problem was the style not the control itself, thx and sorry