I have 4 machines 2 Dev with VS / Telerik and 2 Test both are clean Win 10 machines. When I run the project below in Dev it works perfectly but in Test the theme get's all screwed up and goes mostly transparent.
I have tried this with couple of other themes and it works fine and I have tried it with the Tab Control rather than the TabbedWindow and that also works. It looks like a combination of Fluent and TabbedWindow breaks.
To recreate, make a simple 1 page App, add the TabbedWindow and some content, then set the Fluent Theme in the code behind.
You have to test this on a "clean" machine, without VS or Telerik installed for it to break.
<Grid> <telerik:RadTabbedWindow > <telerik:RadTabbedWindow.Items> <telerik:RadTabItem Header="Test Tab"> <telerik:RadGridView /> </telerik:RadTabItem> </telerik:RadTabbedWindow.Items> </telerik:RadTabbedWindow > </Grid>
public MainWindow()
{
StyleManager.ApplicationTheme = new FluentTheme();
InitializeComponent();
}

Hey,
currently I'm trying to implement the RadExpressionEditor for creating custom Grid view groups. Everything is working fine besides the ExpressionChanged event of the RadExpressionEditor. The event is not called every time the expression changed. If I enter the following expression:
"Sample: " + GetFormattedField("1282", "N2")
Expression changed is called.
if I remove the last bracket ExpressionChanged gets fired and the expression is invalid (this behaviour is correct). If I add the bracket again, ExpressionChanged IS NOT fired. This behaviour occurse in different scenarios. This makes it difficult to trust the system, because we have a lot of invalid expressions, even a valid expression is entered.
Thank you!
As image attached ,when item is dragged for reorder,drag indicator is cover whole column(as red box shown) but not specific column and row(as green box shown).Is there are some workaround to fix that?
<Window.Resources> <Style x:Key="DraggableListBoxItem" TargetType="telerik:RadListBoxItem"> <Setter Property="telerik:DragDropManager.AllowCapturedDrag" Value="True"/> </Style> </Window.Resources><telerik:RadListBox x:Name="scanList" KeyboardNavigation.DirectionalNavigation="None" KeyboardNavigation.AcceptsReturn="False" ItemsSource="{Binding Path=Scans,Mode=TwoWay}" SelectionMode="Multiple" ScrollViewer.VerticalScrollBarVisibility="Hidden" ScrollViewer.HorizontalScrollBarVisibility="Disabled" CanKeyboardNavigationSelectItems="False" ItemContainerStyle="{StaticResource DraggableListBoxItem}"> <telerik:RadListBox.DragDropBehavior> <telerik:ListBoxDragDropBehavior telerik:TouchManager.DragStartTrigger="TouchMove"/> </telerik:RadListBox.DragDropBehavior> <telerik:RadListBox.ItemsPanel> <ItemsPanelTemplate> <telerik:VirtualizingWrapPanel/> </ItemsPanelTemplate> </telerik:RadListBox.ItemsPanel> <telerik:RadListBox.ItemTemplate> <DataTemplate> <Grid> <Image Source="test.jpg" HorizontalAlignment="Center" VerticalAlignment="Center"/> <Image HorizontalAlignment="Left" Margin="10,10,0,0" VerticalAlignment="Top" Width="48" Height="48" Opacity="0.15" Source="/ePresort;component/Icon/edit.png" /> <Label Content="{Binding Path=ScanId,Mode=TwoWay}"/> </Grid> </DataTemplate> </telerik:RadListBox.ItemTemplate> </telerik:RadListBox>PS: ItemHeight and ItemWidth of VirtualizingWrapPanel is set by C# code

Hi. Not sure if this is the place to ask this.
I have a WPF scheduler app built around this scheduleview.
If I want to migrate it to .net core (asp.net), is there a migration path?
Are the features equivalent? How can I find out how difficult could this be?
Thanks in advance.

Hello all,
How can I replace contents using RadRichTextBox/RadDocumentEditor without moving the RadDocument.Selection to the range I want to change?
Moving and restoring the selection seems to work will scroll the document to the new selection position, which is undesired.
After going through similar posts, I found that I can insert content at an arbitrary location using the InsertFragment(DocumentFragment, DocumentPosition) method, but no way to replace a whole range (e.g. defined by two DocumentPosition instances) or even delete the contents of an such a range.
I am using the following AnnotationsProvider to generate annotations using data bindings:
<code>
<telerik:RadCartesianChart.AnnotationsProvider>
<telerik:ChartAnnotationsProvider Source="{Binding LocationHistory}">
<telerik:ChartAnnotationDescriptor>
<telerik:ChartAnnotationDescriptor.Style>
<Style TargetType="telerik:CartesianPlotBandAnnotation">
<Setter Property="Axis" Value="{Binding HorizontalAxis, RelativeSource={RelativeSource AncestorType=telerik:RadCartesianChart}}" />
<Setter Property="From" Value="{Binding Item2}" />
<Setter Property="To" Value="{Binding Item3}" />
<Setter Property="Fill" Value="{Binding Item1, Converter={StaticResource LocationToBrushConverter}}" />
</Style>
</telerik:ChartAnnotationDescriptor.Style>
</telerik:ChartAnnotationDescriptor>
</telerik:ChartAnnotationsProvider>
</telerik:RadCartesianChart.AnnotationsProvider>
</code>
I have a bunch of LineSeries elements as well inside the RadCartesianChart element which is the parent of this AnnotationsProvider.
I am trying to get these annotations to render below all the LineSeries elements. But I am unable to set the ZIndex propery through ChartAnnotationDescriptor.Style. Could you please let me know if there is a workaround for this issue?
Hi,
I would like to be able to begin typing the moment the MultiColumnComboBox has focus, which is not possible at the moment. I need to click in the control or tap Tab a second time before I can begin typing.
Best Regards,
Hans
Hi Team,
We are facing the below exception when scheduling an appointment. we are using "2017.2.503.45" version of Telerik.Windows.Controls and VS 2017.
System.InvalidOperationException:
at System.Windows.Data.CollectionView.DeferRefresh (PresentationFramework, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
at Telerik.Windows.Controls.ScheduleView.ScheduleViewDataConnection.SetGroupingAndFiltering (Telerik.Windows.Controls.ScheduleView, Version=2017.2.503.45, Culture=neutral, PublicKeyToken=5803cfa389c90ce7)
at Telerik.Windows.Controls.ScheduleViewBase.RegenerateGroupHeaders (Telerik.Windows.Controls.ScheduleView, Version=2017.2.503.45, Culture=neutral, PublicKeyToken=5803cfa389c90ce7)
at Telerik.Windows.Controls.ScheduleViewBase.OnResourceTypesSourcePropertyChanged (Telerik.Windows.Controls.ScheduleView, Version=2017.2.503.45, Culture=neutral, PublicKeyToken=5803cfa389c90ce7)
at System.Windows.DependencyObject.OnPropertyChanged (WindowsBase, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
at System.Windows.FrameworkElement.OnPropertyChanged (PresentationFramework, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
at System.Windows.DependencyObject.NotifyPropertyChange (WindowsBase, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
at System.Windows.DependencyObject.UpdateEffectiveValue (WindowsBase, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
at System.Windows.DependencyObject.InvalidateProperty (WindowsBase, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
at System.Windows.Data.BindingExpressionBase.Invalidate (PresentationFramework, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
at System.Windows.Data.BindingExpression.TransferValue (PresentationFramework, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
at MS.Internal.Data.PropertyPathWorker.UpdateSourceValueState (PresentationFramework, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
at MS.Internal.Data.PropertyPathWorker.UpdateSourceValueState (PresentationFramework, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
at MS.Internal.Data.ClrBindingWorker.OnSourcePropertyChanged (PresentationFramework, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
at System.Windows.WeakEventManager+ListenerList`1.DeliverEvent (WindowsBase, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
at System.Windows.WeakEventManager.DeliverEventToList (WindowsBase, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
at System.ComponentModel.PropertyChangedEventManager.OnPropertyChanged (WindowsBase, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
at ViewModel.WorkerCompleted (SampleModules.Test, Version=2.132.18145.3, Culture=neutral, PublicKeyToken=null)
at System.Windows.Threading.ExceptionWrapper.InternalRealCall (WindowsBase, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
at MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen (WindowsBase, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
Please suggest as to handle this issue.
Thanks,
Parameswari

Hi,
I have just strated creating a Telerik WPF application, added a RadButton in a RadWindow and whenever I click on any of the buttons on the Window(minimze, maximize or RadButton) the application crashes. The debugg mode throws System.NullReferenceException: 'Object reference not set to an instance of an object.'
I have added references, of which are Telerik.Windows.Controls, Telerik.Windows.Controls.Data, Telerik.Windows.Controls.Input, Telerik.Windows.Controls.Navigation, Telerik.Windows.Data, for Telerik to the project, version: 2019.1.220.45 (of all references).
The call stack shows this output:
>Telerik.Windows.Controls.Navigation.dll!Telerik.Windows.Controls.WindowBase.OnGotKeyboardFocus(System.Windows.Input.KeyboardFocusChangedEventArgs e)Unknown
PresentationCore.dll!System.Windows.UIElement.OnGotKeyboardFocusThunk(object sender, System.Windows.Input.KeyboardFocusChangedEventArgs e)Unknown
PresentationCore.dll!System.Windows.Input.KeyboardFocusChangedEventArgs.InvokeEventHandler(System.Delegate genericHandler, object genericTarget)Unknown
PresentationCore.dll!System.Windows.RoutedEventArgs.InvokeHandler(System.Delegate handler, object target)Unknown
PresentationCore.dll!System.Windows.RoutedEventHandlerInfo.InvokeHandler(object target, System.Windows.RoutedEventArgs routedEventArgs)Unknown
PresentationCore.dll!System.Windows.EventRoute.InvokeHandlersImpl(object source, System.Windows.RoutedEventArgs args, bool reRaised)Unknown
PresentationCore.dll!System.Windows.UIElement.RaiseEventImpl(System.Windows.DependencyObject sender, System.Windows.RoutedEventArgs args)Unknown
PresentationCore.dll!System.Windows.UIElement.RaiseTrustedEvent(System.Windows.RoutedEventArgs args)Unknown
PresentationCore.dll!System.Windows.UIElement.RaiseEvent(System.Windows.RoutedEventArgs args, bool trusted)Unknown
PresentationCore.dll!System.Windows.Input.InputManager.ProcessStagingArea()Unknown
PresentationCore.dll!System.Windows.Input.InputManager.ProcessInput(System.Windows.Input.InputEventArgs input)Unknown
PresentationCore.dll!System.Windows.Input.KeyboardDevice.ChangeFocus(System.Windows.DependencyObject focus, int timestamp)Unknown
PresentationCore.dll!System.Windows.Input.KeyboardDevice.TryChangeFocus(System.Windows.DependencyObject newFocus, System.Windows.Input.IKeyboardInputProvider keyboardInputProvider, bool askOld, bool askNew, bool forceToNullIfFailed)Unknown
PresentationCore.dll!System.Windows.Input.KeyboardDevice.Focus(System.Windows.DependencyObject focus, bool askOld, bool askNew, bool forceToNullIfFailed)Unknown
PresentationCore.dll!System.Windows.Input.KeyboardDevice.Focus(System.Windows.IInputElement element)Unknown
PresentationCore.dll!System.Windows.UIElement.Focus()Unknown
PresentationFramework.dll!System.Windows.Controls.Primitives.ButtonBase.OnMouseLeftButtonDown(System.Windows.Input.MouseButtonEventArgs e)Unknown
PresentationCore.dll!System.Windows.UIElement.OnMouseLeftButtonDownThunk(object sender, System.Windows.Input.MouseButtonEventArgs e)Unknown
PresentationCore.dll!System.Windows.Input.MouseButtonEventArgs.InvokeEventHandler(System.Delegate genericHandler, object genericTarget)Unknown
PresentationCore.dll!System.Windows.RoutedEventArgs.InvokeHandler(System.Delegate handler, object target)Unknown
PresentationCore.dll!System.Windows.RoutedEventHandlerInfo.InvokeHandler(object target, System.Windows.RoutedEventArgs routedEventArgs)Unknown
PresentationCore.dll!System.Windows.EventRoute.InvokeHandlersImpl(object source, System.Windows.RoutedEventArgs args, bool reRaised)Unknown
PresentationCore.dll!System.Windows.UIElement.ReRaiseEventAs(System.Windows.DependencyObject sender, System.Windows.RoutedEventArgs args, System.Windows.RoutedEvent newEvent)Unknown
PresentationCore.dll!System.Windows.UIElement.OnMouseDownThunk(object sender, System.Windows.Input.MouseButtonEventArgs e)Unknown
PresentationCore.dll!System.Windows.Input.MouseButtonEventArgs.InvokeEventHandler(System.Delegate genericHandler, object genericTarget)Unknown
PresentationCore.dll!System.Windows.RoutedEventArgs.InvokeHandler(System.Delegate handler, object target)Unknown
PresentationCore.dll!System.Windows.RoutedEventHandlerInfo.InvokeHandler(object target, System.Windows.RoutedEventArgs routedEventArgs)Unknown
PresentationCore.dll!System.Windows.EventRoute.InvokeHandlersImpl(object source, System.Windows.RoutedEventArgs args, bool reRaised)Unknown
PresentationCore.dll!System.Windows.UIElement.RaiseEventImpl(System.Windows.DependencyObject sender, System.Windows.RoutedEventArgs args)Unknown
PresentationCore.dll!System.Windows.UIElement.RaiseTrustedEvent(System.Windows.RoutedEventArgs args)Unknown
PresentationCore.dll!System.Windows.UIElement.RaiseEvent(System.Windows.RoutedEventArgs args, bool trusted)Unknown
PresentationCore.dll!System.Windows.Input.InputManager.ProcessStagingArea()Unknown
PresentationCore.dll!System.Windows.Input.InputManager.ProcessInput(System.Windows.Input.InputEventArgs input)Unknown
PresentationCore.dll!System.Windows.Input.InputProviderSite.ReportInput(System.Windows.Input.InputReport inputReport)Unknown
PresentationCore.dll!System.Windows.Interop.HwndMouseInputProvider.ReportInput(System.IntPtr hwnd, System.Windows.Input.InputMode mode, int timestamp, System.Windows.Input.RawMouseActions actions, int x, int y, int wheel)Unknown
PresentationCore.dll!System.Windows.Interop.HwndMouseInputProvider.FilterMessage(System.IntPtr hwnd, MS.Internal.Interop.WindowMessage msg, System.IntPtr wParam, System.IntPtr lParam, ref bool handled)Unknown
PresentationCore.dll!System.Windows.Interop.HwndSource.InputFilterMessage(System.IntPtr hwnd, int msg, System.IntPtr wParam, System.IntPtr lParam, ref bool handled)Unknown
WindowsBase.dll!MS.Win32.HwndWrapper.WndProc(System.IntPtr hwnd, int msg, System.IntPtr wParam, System.IntPtr lParam, ref bool handled)Unknown
WindowsBase.dll!MS.Win32.HwndSubclass.DispatcherCallbackOperation(object o)Unknown
WindowsBase.dll!System.Windows.Threading.ExceptionWrapper.InternalRealCall(System.Delegate callback, object args, int numArgs)Unknown
WindowsBase.dll!System.Windows.Threading.ExceptionWrapper.TryCatchWhen(object source, System.Delegate callback, object args, int numArgs, System.Delegate catchHandler)Unknown
WindowsBase.dll!System.Windows.Threading.Dispatcher.LegacyInvokeImpl(System.Windows.Threading.DispatcherPriority priority, System.TimeSpan timeout, System.Delegate method, object args, int numArgs)Unknown
WindowsBase.dll!MS.Win32.HwndSubclass.SubclassWndProc(System.IntPtr hwnd, int msg, System.IntPtr wParam, System.IntPtr lParam)Unknown
[Native to Managed Transition]
[Managed to Native Transition]
WindowsBase.dll!System.Windows.Threading.Dispatcher.PushFrameImpl(System.Windows.Threading.DispatcherFrame frame)Unknown
WindowsBase.dll!System.Windows.Threading.Dispatcher.PushFrame(System.Windows.Threading.DispatcherFrame frame)Unknown
PresentationFramework.dll!System.Windows.Application.RunDispatcher(object ignore)Unknown
PresentationFramework.dll!System.Windows.Application.RunInternal(System.Windows.Window window)Unknown
PresentationFramework.dll!System.Windows.Application.Run(System.Windows.Window window)Unknown
PresentationFramework.dll!System.Windows.Application.Run()Unknown
Project3.exe!Project3.App.Main()Unknown
I cannot find the stack trace since I don't have .pdb files(can't find them(except reporting.wpf.pdb) in the installation folder).
I'm attaching the solution.
I'm using Visual Studio 2017 Community Edition.
Hope you can solve the issue.
Sincerely,
Josip