Unplanned
Last Updated: 28 Mar 2025 20:23 by Chandler
The VisualizationLayer will support using the collection views such as System.Windows.Data.ListCollectionView as its items source.
Unplanned
Last Updated: 28 Mar 2025 16:58 by Stenly
Distinct values are not displayed when setting the FilterMemberPath to the Date property of a DateTime DataTable column when it contains DBNull.Value.

Generally, this is present because while the distinct values are generated, we check for the Date property in each row, however, when it reaches a row that has a DBNull.Value value, an exception is thrown because the Date property cannot be found in null.
In Development
Last Updated: 28 Mar 2025 14:18 by ADMIN
Scheduled for 2025 Q2 (May)
ADMIN
Created by: Martin
Comments: 0
Category: Spreadsheet
Type: Feature Request
5
Returns a Range object that represents the current region. The current region is a range bounded by any combination of blank rows and blank columns. If we want to be consistent with MS Excel we should implement this property. It is useful for many operations of a region such as filtering(selecting one cell and executing the Filter command should apply it to the current region), sorting, selecting all and etc. This document will be useful: https://docs.microsoft.com/en-us/office/vba/api/excel.range.currentregion.
In Development
Last Updated: 28 Mar 2025 14:18 by ADMIN
Scheduled for 2025 Q2 (May)
The Multiple and Extended selection modes allow you to select and deselect multiple items. The deselection of items doesn't work.
In Development
Last Updated: 28 Mar 2025 14:18 by ADMIN
Scheduled for 2025 Q2 (May)

The operating system region and language needs to be set to Japanese.

RichTextBox seems to have several issues with Japanese, but being locked from visibility or edit is the biggest one.

To recreate, start typing in Japanese, push the "right" arrow after selecting the IME option desired, then hit "spacebar." This seems to duplicate the text, then when trying to continue to type into the text field the text is no longer visible (yet the IME does display).

The native WPF RichTextBox has no issues (and also supports partial selection, etc.).

I've attached a video to show the behavior with 2025 Q1 telerik.

*note:* This is on a machine with NVIDIA graphics. I mention this as there may be some issues with RichTextBox and the hardware... When I'm in a virtual machine with a completely Japanese environment and virtual graphics driver, there is NO text visible at all when trying to type into the RichTextBox. Works fine with other controls and wpf RichTextBox.

Unplanned
Last Updated: 28 Mar 2025 08:04 by Martin Ivanov
Currently, the DragDropBehavior<TState> class derives from DependencyObject which prevents it from inheritting the data context of its parent element. Change its parent class from DependencyObject to Freezable, so the data context can be automatically accessed. This is meaningful when you create a custom behavior and add a DependencyProperty that you want to data bind in the XAML. 
Under Review
Last Updated: 28 Mar 2025 06:19 by ADMIN

Type in Japanese text in RichTextBox that word wraps beyond the first line and export it to PDF. The text should always be left aligned (as visually shown when typing) but has an "indent" when exported when the font is Segoe UI.

Image

Declined
Last Updated: 27 Mar 2025 14:48 by ADMIN
Created by: Jan
Comments: 5
Category: UI for WPF
Type: Bug Report
1

After upgrading to .net 9 I get the following error when starting the published program (running it in RIDER in debug-mode doesn't create the issue).

(The issue might be similar to: https://feedback.telerik.com/wpf/1670420-typeinitializationexception-in-telerik-windows-input-touch-touchmanager-with-net-9 )

 

Application: Rueckrufdatenbank.exe
CoreCLR Version: 9.0.124.61010
.NET Version: 9.0.1
Description: The process was terminated due to an unhandled exception.
Exception Info: Prism.Ioc.ContainerResolutionException: An unexpected error occurred while resolving 'Rueckrufdatenbank.Views.MainWindow'
 ---> Unity.ResolutionFailedException: Resolution failed with error: Exception has been thrown by the target of an invocation.

For more detailed information run Unity in debug mode: new UnityContainer().AddExtension(new Diagnostic())
 ---> System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation.
 ---> System.Windows.Markup.XamlParseException: Bei der Initialisierung von "Telerik.Windows.Controls.RadRibbonButton" wurde eine Ausnahme ausgelöst.
 ---> System.Xaml.XamlObjectWriterException: Beim Festlegen der Eigenschaft "System.Windows.ResourceDictionary.Source" wurde eine Ausnahme ausgelöst.
 ---> System.Windows.Markup.XamlParseException: Beim Festlegen der Eigenschaft "System.Windows.ResourceDictionary.DeferrableContent" wurde eine Ausnahme ausgelöst.
 ---> System.Xaml.XamlObjectWriterException: Fehler beim Erstellen von "ElementType" aus dem Text "Button".
 ---> System.IO.FileNotFoundException: Could not load file or assembly 'WindowsFormsIntegration, Culture=neutral, PublicKeyToken=31bf3856ad364e35'. Das System kann die angegebene Datei nicht finden.
File name: 'WindowsFormsIntegration, Culture=neutral, PublicKeyToken=31bf3856ad364e35'
   at System.Reflection.RuntimeAssembly.InternalLoad(AssemblyName assemblyName, StackCrawlMark& stackMark, AssemblyLoadContext assemblyLoadContext, RuntimeAssembly requestingAssembly, Boolean throwOnFileNotFound)
   at System.Reflection.Assembly.Load(AssemblyName assemblyRef)
   at System.Windows.Baml2006.Baml2006SchemaContext.ResolveAssembly(BamlAssembly bamlAssembly)
   at System.Windows.Baml2006.Baml2006SchemaContext.GetAssembly(Int16 assemblyId)
   at System.Windows.Baml2006.Baml2006SchemaContext.EnsureXmlnsAssembliesLoaded(String xamlNamespace)
   at System.Windows.Baml2006.Baml2006SchemaContext.GetXamlType(String xamlNamespace, String name, XamlType[] typeArguments)
   at MS.Internal.Xaml.XamlContext.GetXamlType(XamlTypeName typeName, Boolean returnUnknownTypesOnFailure, Boolean skipVisibilityCheck)
   at MS.Internal.Xaml.XamlContext.ResolveXamlType(String qName, Boolean skipVisibilityCheck)
   at MS.Internal.Xaml.Context.ObjectWriterContext.ServiceProvider_Resolve(String qName)
   at MS.Internal.Xaml.Runtime.ClrObjectRuntime.CreateObjectWithTypeConverter(ServiceProviderContext serviceContext, XamlValueConverter`1 ts, Object value)
   at System.Xaml.XamlObjectWriter.Logic_CreateFromValue(ObjectWriterContext ctx, XamlValueConverter`1 typeConverter, Object value, XamlMember property, String targetName, IAddLineInfo lineInfo)
   --- End of inner exception stack trace ---
   at System.Xaml.XamlObjectWriter.Logic_CreateFromValue(ObjectWriterContext ctx, XamlValueConverter`1 typeConverter, Object value, XamlMember property, String targetName, IAddLineInfo lineInfo)
   at System.Xaml.XamlObjectWriter.Logic_CreatePropertyValueFromValue(ObjectWriterContext ctx)
   at System.Xaml.XamlObjectWriter.WriteEndMember()
   at System.Xaml.XamlServices.Transform(XamlReader xamlReader, XamlWriter xamlWriter, Boolean closeWriter)
   at System.Windows.ResourceDictionary.EvaluateMarkupExtensionNodeList(XamlReader reader, IServiceProvider serviceProvider)
   at System.Windows.ResourceDictionary.SetKeys(IList`1 keyCollection, IServiceProvider serviceProvider)
   at MS.Internal.Xaml.Runtime.ClrObjectRuntime.SetValue(Object inst, XamlMember property, Object value)
   --- End of inner exception stack trace ---
   at System.Windows.Markup.XamlReader.RewrapException(Exception e, IXamlLineInfo lineInfo, Uri baseUri)
   at System.Windows.Markup.WpfXamlLoader.Load(XamlReader xamlReader, IXamlObjectWriterFactory writerFactory, Boolean skipJournaledProperties, Object rootObject, XamlObjectWriterSettings settings, Uri baseUri)
   at System.Windows.Markup.WpfXamlLoader.LoadBaml(XamlReader xamlReader, Boolean skipJournaledProperties, Object rootObject, XamlAccessLevel accessLevel, Uri baseUri)
   at System.Windows.Markup.XamlReader.LoadBaml(Stream stream, ParserContext parserContext, Object parent, Boolean closeStream)
   at System.Windows.Application.LoadBamlStreamWithSyncInfo(Stream stream, ParserContext pc)
   at MS.Internal.AppModel.AppModelKnownContentFactory.BamlConverterCore(Stream stream, Uri baseUri, Boolean canUseTopLevelBrowser, Boolean sandboxExternalContent, Boolean allowAsync, Boolean isJournalNavigation, XamlReader& asyncObjectConverter, Boolean isUnsafe)
   at MS.Internal.AppModel.MimeObjectFactory.GetObjectAndCloseStreamCore(Stream s, ContentType contentType, Uri baseUri, Boolean canUseTopLevelBrowser, Boolean sandboxExternalContent, Boolean allowAsync, Boolean isJournalNavigation, XamlReader& asyncObjectConverter, Boolean isUnsafe)
   at System.Windows.ResourceDictionary.set_Source(Uri value)
   at MS.Internal.Xaml.Runtime.ClrObjectRuntime.SetValue(Object inst, XamlMember property, Object value)
   --- End of inner exception stack trace ---
   at MS.Internal.Xaml.Runtime.ClrObjectRuntime.SetValue(Object inst, XamlMember property, Object value)
   at MS.Internal.Xaml.Runtime.PartialTrustTolerantRuntime.SetValue(Object obj, XamlMember property, Object value)
   at System.Xaml.XamlObjectWriter.Logic_ApplyPropertyValue(ObjectWriterContext ctx, XamlMember prop, Object value, Boolean onParent)
   at System.Xaml.XamlObjectWriter.Logic_DoAssignmentToParentProperty(ObjectWriterContext ctx)
   at System.Xaml.XamlObjectWriter.WriteEndMember()
   at System.Xaml.XamlServices.Transform(XamlReader xamlReader, XamlWriter xamlWriter, Boolean closeWriter)
   at System.Windows.SystemResources.ResourceDictionaries.LoadDictionary(Assembly assembly, String assemblyName, String resourceName, Boolean isTraceEnabled, Uri& dictionarySourceUri)
   at System.Windows.SystemResources.ResourceDictionaries.LoadGenericDictionary(Boolean isTraceEnabled)
   at System.Windows.SystemResources.FindDictionaryResource(Object key, Type typeKey, ResourceKey resourceKey, Boolean isTraceEnabled, Boolean allowDeferredResourceReference, Boolean mustReturnDeferredResourceReference, Boolean& canCache)
   at System.Windows.SystemResources.FindResourceInternal(Object key, Boolean allowDeferredResourceReference, Boolean mustReturnDeferredResourceReference)
   at System.Windows.StyleHelper.GetThemeStyle(FrameworkElement fe, FrameworkContentElement fce)
   at System.Windows.FrameworkElement.UpdateThemeStyleProperty()
   at System.Windows.FrameworkElement.OnPropertyChanged(DependencyPropertyChangedEventArgs e)
   at System.Windows.DependencyObject.NotifyPropertyChange(DependencyPropertyChangedEventArgs args)
   at System.Windows.DependencyObject.UpdateEffectiveValue(EntryIndex entryIndex, DependencyProperty dp, PropertyMetadata metadata, EffectiveValueEntry oldEntry, EffectiveValueEntry& newEntry, Boolean coerceWithDeferredReference, Boolean coerceWithCurrentValue, OperationType operationType)
   at System.Windows.DependencyObject.SetValueCommon(DependencyProperty dp, Object value, PropertyMetadata metadata, Boolean coerceWithDeferredReference, Boolean coerceWithCurrentValue, OperationType operationType, Boolean isInternal)
   at System.Windows.DependencyObject.SetValue(DependencyProperty dp, Object value)
   at Telerik.Windows.Controls.Theme.DefaultStyleKeyHelper.SetDefaultStyleKey(Control control, Object value)
   at Telerik.Windows.Controls.StyleManager.SetDefaultStyleKey(Control control, Type controlType)
   at Telerik.Windows.Controls.RadButton.OnInitialized(EventArgs e)
   at Telerik.Windows.Controls.RadRibbonButton.OnInitialized(EventArgs e)
   at MS.Internal.Xaml.Runtime.ClrObjectRuntime.InitializationGuard(XamlType xamlType, Object obj, Boolean begin)
   --- End of inner exception stack trace ---
   at System.Windows.Markup.XamlReader.RewrapException(Exception e, IXamlLineInfo lineInfo, Uri baseUri)
   at System.Windows.Markup.WpfXamlLoader.Load(XamlReader xamlReader, IXamlObjectWriterFactory writerFactory, Boolean skipJournaledProperties, Object rootObject, XamlObjectWriterSettings settings, Uri baseUri)
   at System.Windows.Markup.WpfXamlLoader.LoadBaml(XamlReader xamlReader, Boolean skipJournaledProperties, Object rootObject, XamlAccessLevel accessLevel, Uri baseUri)
   at System.Windows.Markup.XamlReader.LoadBaml(Stream stream, ParserContext parserContext, Object parent, Boolean closeStream)
   at System.Windows.Application.LoadComponent(Object component, Uri resourceLocator)
   at Rueckrufdatenbank.Views.MainWindow.InitializeComponent() in C:\GitLocal\Rueckrufdatenbank\Rueckrufdatenbank\Views\MainWindow.xaml:line 1
   at Rueckrufdatenbank.Views.MainWindow..ctor() in C:\GitLocal\Rueckrufdatenbank\Rueckrufdatenbank\Views\MainWindow.xaml.cs:line 13
   at System.RuntimeMethodHandle.InvokeMethod(Object target, Void** arguments, Signature sig, Boolean isConstructor)
   at System.Reflection.MethodBaseInvoker.InvokeWithNoArgs(Object obj, BindingFlags invokeAttr)
   --- End of inner exception stack trace ---
   at System.Reflection.MethodBaseInvoker.InvokeWithNoArgs(Object obj, BindingFlags invokeAttr)
   at System.Reflection.RuntimeConstructorInfo.Invoke(BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
   at System.Reflection.ConstructorInfo.Invoke(Object[] parameters)
   at Unity.Processors.ConstructorProcessor.<>c__DisplayClass16_0.<GetResolverDelegate>b__0(BuilderContext& c)
   at Unity.Processors.MemberProcessor`2.<>c__DisplayClass8_0.<GetResolver>b__0(BuilderContext& c)
   at Unity.Processors.MemberProcessor`2.<>c__DisplayClass8_0.<GetResolver>b__0(BuilderContext& c)
   at Unity.Processors.MemberProcessor`2.<>c__DisplayClass8_0.<GetResolver>b__0(BuilderContext& c)
   at Unity.UnityContainer.<>c__DisplayClass113_0.<OptimizingFactory>b__0(BuilderContext& c)
   at Unity.Strategies.BuildPlanStrategy.PreBuildUp(BuilderContext& context)
   at Unity.UnityContainer.<>c.<.ctor>b__73_1(BuilderContext& context)
   --- End of inner exception stack trace ---
   at Unity.UnityContainer.<>c.<.ctor>b__73_1(BuilderContext& context)
   at Unity.UnityContainer.Unity.IUnityContainer.Resolve(Type type, String name, ResolverOverride[] overrides)
   at Prism.Unity.UnityContainerExtension.Resolve(Type type, ValueTuple`2[] parameters)
   --- End of inner exception stack trace ---
   at Prism.Unity.UnityContainerExtension.Resolve(Type type, ValueTuple`2[] parameters)
   at Prism.Unity.UnityContainerExtension.Resolve(Type type)
   at Prism.Ioc.IContainerProviderExtensions.Resolve[T](IContainerProvider provider)
   at Rueckrufdatenbank.App.CreateShell() in C:\GitLocal\Rueckrufdatenbank\Rueckrufdatenbank\App.xaml.cs:line 67
   at Prism.PrismApplicationBase.Initialize()
   at Prism.PrismApplicationBase.InitializeInternal()
   at Prism.PrismApplicationBase.OnStartup(StartupEventArgs e)
   at Rueckrufdatenbank.App.OnStartup(StartupEventArgs e) in C:\GitLocal\Rueckrufdatenbank\Rueckrufdatenbank\App.xaml.cs:line 75
   at System.Windows.Application.<.ctor>b__1_0(Object unused)
   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)
--- End of stack trace from previous location ---
   at System.Threading.ExecutionContext.RunInternal(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 System.Windows.Threading.Dispatcher.Invoke(DispatcherPriority priority, Delegate method, Object arg)
   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 Rueckrufdatenbank.App.Main()


Duplicated
Last Updated: 27 Mar 2025 08:29 by ADMIN
The formatting is not applied to the second level when the grid is bound to two types of items.
Under Review
Last Updated: 25 Mar 2025 08:21 by ADMIN

When adding a button cell as below, if the button cell is selected the button doesn't work when tapping it.

<telerik:GridViewDataColumn Header="Config"
                            DataMemberBinding="{Binding .}" IsReadOnly="True">
    <telerik:GridViewDataColumn.CellTemplate>
        <DataTemplate>
            <!-- Adding telerik:TouchManager.TouchMode="None" solves the issue -->
            <telerik:RadButton HorizontalAlignment="Center" Style="{StaticResource MyButtonStyle}"
                               Margin="2" Padding="1" Width="Auto" Height="Auto"
                               Command="{Binding DataContext.ShowExtraConfigurationCommand, RelativeSource={RelativeSource AncestorType=Window}}"
                               CommandParameter="{Binding .}" ToolTip="Config">
                <telerik:RadGlyph Glyph="{StaticResource GlyphGear}"/>
            </telerik:RadButton>
        </DataTemplate>
    </telerik:GridViewDataColumn.CellTemplate>
</telerik:GridViewDataColumn>

As stated in the comment, adding the property below to the RadButton solves the issue.

telerik:TouchManager.TouchMode="None"

I have attached a sample project in which the error occurs, simply tap a button, close the MessageBox and tap the same button again. Thank you for your time!

Unplanned
Last Updated: 25 Mar 2025 07:51 by ADMIN
'Fit to Content' table is not pasted properly when copied from MS Word
Unplanned
Last Updated: 25 Mar 2025 07:48 by Martin Ivanov
Created by: Martin Ivanov
Comments: 0
Category: PivotGrid
Type: Feature Request
0
Currently, the selection features selects only cells with the aggregate values. Clicking on the parent group header will select all associated cells in the corresponding direction.
Allow selecting and higlighting the group header visual.
Unplanned
Last Updated: 24 Mar 2025 13:23 by Stenly
Currently, the RadFileDialogs do not support setting filters without specifying the extensions for the files. This is deemed an incorrect filter pattern and an exception is raised.

We can provide support for filtering files that do not have an extension.
Unplanned
Last Updated: 24 Mar 2025 10:49 by Martin Ivanov

NullReferenceException occurs when the the automation peers creation for the rows goes over 10,000 peers (the MaxCachedPeersSize setting of the GridViewDataControlAutomationPeer). The exception occurs only when the 'record' modifier is used in the class definition. For example:

public record class MyClass(int Id)
{
}

The exception stacktrace is:

System.NullReferenceException: 'Object reference not set to an instance of an object.'
peer was null.
Telerik.Windows.Controls.GridView.dll!Telerik.Windows.Automation.Peers.GridViewDataControlAutomationPeer.ClearPeer(Telerik.Windows.Automation.Peers.DataItemAutomationPeer peer)   Telerik.Windows.Controls.GridView.dll!Telerik.Windows.Automation.Peers.GridViewDataControlAutomationPeer.GetOrCreateItemPeer(object item, int index) Line 288 C#  Telerik.Windows.Controls.GridView.dll!Telerik.Windows.Automation.Peers.GridViewRowAutomationPeer.FindDataItemAutomationPeer(System.Collections.Generic.List<System.Windows.Automation.Peers.AutomationPeer> childPeers) Telerik.Windows.Controls.GridView.dll!Telerik.Windows.Automation.Peers.GridViewRowAutomationPeer.GetChildrenCore() 

.

To work this around use the "class" modifier instead of "record". For example, instead of:

public record class MyClass(int Id)
{
}

Use:

public class MyClass
{
    public int Id { get; set; } 
}

 Or alternatively, increase the MaxCachedPeersSize value.

 

Unplanned
Last Updated: 21 Mar 2025 13:05 by Stenly
In a touch scenario, when there are RadComboBox instances one below the other, selecting an item from a RadComboBox opens the RadComboBox instance, which is below the selected item. 

This is present when there is a global Style that targets the native WPF ScrollViewer element, which sets its PanningMode property to Both

To work this around, set the TouchManager.TouchMode to HitTestHidden, in order to exclude the RadComboBox from the TouchManager's events propagation.
In Development
Last Updated: 21 Mar 2025 09:14 by ADMIN
Scheduled for 2025 Q2 (May)
RadRichTextBox: Exception when one parses styles that contain specific (German) characters.
In Development
Last Updated: 21 Mar 2025 09:14 by ADMIN
Scheduled for 2025 Q2 (May)
Having a file with a very thin border thickness is displayed with increased thickness when displaying a document inside RadPdfViewer.
In Development
Last Updated: 21 Mar 2025 09:14 by ADMIN
Scheduled for 2025 Q2 (May)
When a culture, for example, the German one is applied, parsing an SVG file with a specified matrix, will result in an exception when its value is parsed.
In Development
Last Updated: 21 Mar 2025 09:14 by ADMIN
Scheduled for 2025 Q2 (May)

When the TitleBarVisibility is Collapsed, the backstage close button is aligned with the top of the backstage adorner. The button should have a top margin applied. 
This reproduces when the BackstagePosition property of RadRibbonBackstage is set to Office2013, which is the default setting of newer Telerik themes.

To work this around, get the backstage close button and set its top margin.

 private void RadRibbonBackstage_Loaded(object sender, RoutedEventArgs e)
 {
     var backstage = (RadRibbonBackstage)sender;
     var closeButton = backstage.FindChildByType<RadRibbonButton>();
     closeButton.Margin = new Thickness(closeButton.Margin.Left, 15, closeButton.Margin.Right, closeButton.Margin.Bottom);
 }

Unplanned
Last Updated: 20 Mar 2025 09:04 by Martin Ivanov
Add a property that formats the time items of the clock displayed in the DateTimePicker. Currently, the format is hard-coded to "t" which displays only the time part of the DateTime object. Adding this will allow to show also seconds and other parts of the date-time when it makes sense.
1 2 3 4 5 6