Hello,
I found a bug where the EmptySpace element breaks the layout. When I use a Key-Button instead, the layout shifts to the correct position. However, I don't actually want to have any button in this position at all.
EmptySpace Element:
<RadVirtualKeyboard xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<Grid>
<KeysLayout KeySpacing="0.1">
<Rows>
<Row>
<Keys>
<Key KeyType="Normal" Width="1" Height="1" VirtualKey="81" />
<Key KeyType="Normal" Width="1" Height="1" VirtualKey="87" />
<Key KeyType="Normal" Width="1" Height="1" VirtualKey="69" />
<Key KeyType="Normal" Width="1" Height="1" VirtualKey="82" />
<Key KeyType="Normal" Width="1" Height="1" VirtualKey="84" />
<Key KeyType="Normal" Width="1" Height="1" VirtualKey="89" />
<Key KeyType="Normal" Width="1" Height="1" VirtualKey="85" />
<Key KeyType="Normal" Width="1" Height="1" VirtualKey="73" />
<Key KeyType="Normal" Width="1" Height="1" VirtualKey="79" />
<Key KeyType="Normal" Width="1" Height="1" VirtualKey="80" />
<Key DisplayText="" KeyType="Special" Width="2" Height="1" VirtualKey="8" />
</Keys>
</Row>
<Row>
<Keys>
<EmptySpace Width="0.5" Height="1" />
<Key KeyType="Normal" Width="1" Height="1" VirtualKey="65" />
<Key KeyType="Normal" Width="1" Height="1" VirtualKey="83" />
<Key KeyType="Normal" Width="1" Height="1" VirtualKey="68" />
<Key KeyType="Normal" Width="1" Height="1" VirtualKey="70" />
<Key KeyType="Normal" Width="1" Height="1" VirtualKey="71" />
<Key KeyType="Normal" Width="1" Height="1" VirtualKey="72" />
<Key KeyType="Normal" Width="1" Height="1" VirtualKey="74" />
<Key KeyType="Normal" Width="1" Height="1" VirtualKey="75" />
<Key KeyType="Normal" Width="1" Height="1" VirtualKey="76" />
<EmptySpace Width="1" Height="1" />
<Key DisplayText="" KeyType="Special" Width="1.5" Height="2" VirtualKey="13" />
</Keys>
</Row>
<Row>
<Keys>
<Key DisplayText="" KeyType="Lock" Width="1.5" Height="1" VirtualKey="20" />
<Key KeyType="Normal" Width="1" Height="1" VirtualKey="90" />
<Key KeyType="Normal" Width="1" Height="1" VirtualKey="88" />
<Key KeyType="Normal" Width="1" Height="1" VirtualKey="67" />
<Key KeyType="Normal" Width="1" Height="1" VirtualKey="86" />
<Key KeyType="Normal" Width="1" Height="1" VirtualKey="66" />
<Key KeyType="Normal" Width="1" Height="1" VirtualKey="78" />
<Key KeyType="Normal" Width="1" Height="1" VirtualKey="77" />
<Key DisplayText="," KeyType="Normal" Width="1" Height="1" />
<Key DisplayText="." KeyType="Normal" Width="1" Height="1" />
</Keys>
</Row>
<Row>
<Keys>
<Key DisplayText="&123" KeyType="Special" Width="2" Height="1" VirtualKey="113" />
<Key DisplayText="" KeyType="Special" Width="10" Height="1" VirtualKey="32" />
</Keys>
</Row>
</Rows>
</KeysLayout>
</Grid>
</RadVirtualKeyboard> 
Key-Element (Layout desired with EmptySpace):
<RadVirtualKeyboard xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<Grid>
<KeysLayout KeySpacing="0.1">
<Rows>
<Row>
<Keys>
<Key KeyType="Normal" Width="1" Height="1" VirtualKey="81" />
<Key KeyType="Normal" Width="1" Height="1" VirtualKey="87" />
<Key KeyType="Normal" Width="1" Height="1" VirtualKey="69" />
<Key KeyType="Normal" Width="1" Height="1" VirtualKey="82" />
<Key KeyType="Normal" Width="1" Height="1" VirtualKey="84" />
<Key KeyType="Normal" Width="1" Height="1" VirtualKey="89" />
<Key KeyType="Normal" Width="1" Height="1" VirtualKey="85" />
<Key KeyType="Normal" Width="1" Height="1" VirtualKey="73" />
<Key KeyType="Normal" Width="1" Height="1" VirtualKey="79" />
<Key KeyType="Normal" Width="1" Height="1" VirtualKey="80" />
<Key DisplayText="" KeyType="Special" Width="2" Height="1" VirtualKey="8" />
</Keys>
</Row>
<Row>
<Keys>
<EmptySpace Width="0.5" Height="1" />
<Key KeyType="Normal" Width="1" Height="1" VirtualKey="65" />
<Key KeyType="Normal" Width="1" Height="1" VirtualKey="83" />
<Key KeyType="Normal" Width="1" Height="1" VirtualKey="68" />
<Key KeyType="Normal" Width="1" Height="1" VirtualKey="70" />
<Key KeyType="Normal" Width="1" Height="1" VirtualKey="71" />
<Key KeyType="Normal" Width="1" Height="1" VirtualKey="72" />
<Key KeyType="Normal" Width="1" Height="1" VirtualKey="74" />
<Key KeyType="Normal" Width="1" Height="1" VirtualKey="75" />
<Key KeyType="Normal" Width="1" Height="1" VirtualKey="76" />
<Key DisplayText="'" KeyType="Normal" Width="1" Height="1" />
<Key DisplayText="" KeyType="Special" Width="1.5" Height="2" VirtualKey="13" />
</Keys>
</Row>
<Row>
<Keys>
<Key DisplayText="" KeyType="Lock" Width="1.5" Height="1" VirtualKey="20" />
<Key KeyType="Normal" Width="1" Height="1" VirtualKey="90" />
<Key KeyType="Normal" Width="1" Height="1" VirtualKey="88" />
<Key KeyType="Normal" Width="1" Height="1" VirtualKey="67" />
<Key KeyType="Normal" Width="1" Height="1" VirtualKey="86" />
<Key KeyType="Normal" Width="1" Height="1" VirtualKey="66" />
<Key KeyType="Normal" Width="1" Height="1" VirtualKey="78" />
<Key KeyType="Normal" Width="1" Height="1" VirtualKey="77" />
<Key DisplayText="," KeyType="Normal" Width="1" Height="1" />
<Key DisplayText="." KeyType="Normal" Width="1" Height="1" />
</Keys>
</Row>
<Row>
<Keys>
<Key DisplayText="&123" KeyType="Special" Width="2" Height="1" VirtualKey="113" />
<Key DisplayText="" KeyType="Special" Width="10" Height="1" VirtualKey="32" />
</Keys>
</Row>
</Rows>
</KeysLayout>
</Grid>
</RadVirtualKeyboard> 
Hello, I get KeyNotFoundException (ConcurrentDictionary) error in RemoveTile method:
Telerik.Windows.Controls.Map.TilesDownloadManager:
- private void Dispose() ↴
- private void RemoveL1Cache() ↴
- private void RemoveTile(TileId key)
I wrote about it here: https://feedback.telerik.com/wpf/1656461-keynotfoundexception-when-zooming-in
But in version 2024.4.1111 only 1 problem was fixed...
ConcurrentDictionary<TileId, TileSource> requests may not contain TileId key in RemoveTile.
Can you fix this in the next release?
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).
System.TypeInitializationException: The type initializer for 'Telerik.Windows.Input.Touch.TouchManager' threw an exception.
---> System.IO.FileNotFoundException: Could not load file or assembly 'System.Windows.Forms, Version=8.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'. Das System kann die angegebene Datei nicht finden.
the mentioned assembly System.Windows.Forms is not used by me at all.
The exception occurs when publishing .NET 9 application and the "Deployment Mode" in the "Publish profile" is set to "Self-contained".
The exception is not displayed, but instead the application crashes at startup and it seems like it cannot start at all. You can see the error in the Events Viewer tool of the Windows OS, after you navigate to the "Windows Logs-->Application" menu.
This is not reproducible in .NET 8.
The original stacktrace where this was hit is the following:
System.IO.FileNotFoundException: Could not load file or assembly 'System.Windows.Forms, Version=8.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'. The system cannot find the file specified. File name: 'System.Windows.Forms, Version=8.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' at Telerik.Windows.Input.Touch.TouchManager.InitializeProperties() at Telerik.Windows.Input.Touch.TouchManager.RemoveTapHoldAndReleaseEventHandler(UIElement element, TouchEventHandler handler) at Telerik.Windows.Controls.RadContextMenu.AttachHandler(UIElement element) at Telerik.Windows.Controls.RadContextMenu.CreateReferences(UIElement element)
To work this around, you can try one of the following ideas:
- Change the target framework of your project to .NET 8 or earlier.
- Use the "Framework-dependent" Deployment mode in the Publish profile.
- Add a reference to the C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App\9.0.0\System.Windows.Forms.dll file in your project.
The performance of loading the thumbnails is decreased with the removing of the cache in PdfViewer. Possible reason is that the pages are no longer loaded asynchronously. Steps to reproduce: - Open the SDK with the thumbnails for PDFViewer. - Notice that the load of the thumbnails is slow.
.jpg){kind=avatar}
Improve the load time when the ribbon UI is used.
The custom list styles from a document exported by RadRichTextBox's HtmlFormatProvider are not imported.
When trying to show the RadRichTextBox' LineNumberingDialog, nothing is displayed. This happens when using the NoXaml Telerik dlls and themes other than Windows11. The dialog is shown only in the Windows11 theme.
To work this around, add the following two lines in the App.xaml resources.
<Application x:Class="WpfApp1.App"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="clr-namespace:WpfApp1"
xmlns:telerikDialogs="clr-namespace:Telerik.Windows.Controls.RichTextBoxUI.Dialogs;assembly=Telerik.Windows.Controls.RichTextBox"
StartupUri="MainWindow.xaml">
<Application.Resources>
<ResourceDictionary>
<ResourceDictionary.MergedDictionaries>
<ResourceDictionary Source="/Telerik.Windows.Themes.Fluent;component/Themes/System.Windows.xaml"/>
<ResourceDictionary Source="/Telerik.Windows.Themes.Fluent;component/Themes/Telerik.Windows.Controls.xaml"/>
<ResourceDictionary Source="/Telerik.Windows.Themes.Fluent;component/Themes/Telerik.Windows.Controls.ImageEditor.xaml"/>
<ResourceDictionary Source="/Telerik.Windows.Themes.Fluent;component/Themes/Telerik.Windows.Controls.Navigation.xaml"/>
<ResourceDictionary Source="/Telerik.Windows.Themes.Fluent;component/Themes/Telerik.Windows.Controls.Input.xaml"/>
<ResourceDictionary Source="/Telerik.Windows.Themes.Fluent;component/Themes/Telerik.Windows.Controls.RibbonView.xaml"/>
<ResourceDictionary Source="/Telerik.Windows.Themes.Fluent;component/Themes/Telerik.Windows.Controls.RichTextBox.xaml"/>
</ResourceDictionary.MergedDictionaries>
<Style TargetType="telerikDialogs:LineNumberingDialog" BasedOn="{StaticResource RadWindowStyle}"/>
<Style TargetType="telerikDialogs:LineNumberingDistanceNumericUpDown" BasedOn="{StaticResource RadNumericUpDownStyle}"/>
</ResourceDictionary>
</Application.Resources>
</Application>
ArgumentNullException can be thrown when opening a RadOpenFileDialog in the following scenario: CustomPlaces contains the Desktop directory, InitialDirectory is also set to Desktop and ShowNetworkLocations is false.
System.Windows.Data Error: 8 : Cannot save value from target back to source. BindingExpression:Path=CurrentParentDirectory; DataItem='OpenFileDialogViewModel' (HashCode=57416810); target element is 'FileDialogsBreadcrumb' (Name='PART_PathNavigationPane'); target property is 'CurrentItem' (type 'Object') ArgumentNullException:'System.ArgumentNullException: Value cannot be null.
Parameter name: value
at System.String.StartsWith(String value)
at Telerik.Windows.Controls.FileDialogs.Helpers.PathHelper.CapitalizeNetworkPath(String path)
at Telerik.Windows.Controls.FileDialogs.ExplorerControl.BringItemIntoView(DirectoryBaseWrapper itemToBring)
at Telerik.Windows.Controls.FileDialogs.ExplorerControl.SyncTreeViewWithCurrentDir()
at Telerik.Windows.Controls.FileDialogs.ExplorerControl.ProcessCurrentParentDirChanged()
at System.ComponentModel.PropertyChangedEventHandler.Invoke(Object sender, PropertyChangedEventArgs e)
at Telerik.Windows.Controls.ViewModelBase.OnPropertyChanged(String propertyName)
at Telerik.Windows.Controls.FileDialogs.OpenFileDialogViewModel.OnPropertyChanged(String propertyName)
at Telerik.Windows.Controls.FileDialogs.DialogViewModel.set_CurrentParentDirectory(DirectoryBaseWrapper value)'
This is a regressiion issue in the 2024.3.924 release of Telerik UI for WPF.
Save and load of the saved XML should result of the same item IDs for every RadDiagramItem (shapes, connections).
To work this around, you can create a custom SerializationService and override its DeserializeItems method, where you can change the "makeUnique" parameter.
The issue manifests also when doing drag/drop from the RadDiagramToolBox or any other custom drag drop implementation that uses the DiagramDropInfo class (which is automatically handled by the RadDiagram's drop internal code). In this case the custom service approach won't work because the drag/drop deserialization works with a separate instance of SerializationService (SerializationService.Default) which cannot be changed. In this case, you can subscribe RadDiagram to the DragDropManaged.Drop event and manually call the SerializationService.Default.DeserializeItems method.
public class CustomSerializationService : SerializationService
{
public CustomSerializationService(IGraphInternal graph) : base(graph)
{
}
public override IEnumerable<IDiagramItem> DeserializeItems(SerializationInfo serializationInfo, bool makeUnique = false)
{
makeUnique = false;
return base.DeserializeItems(serializationInfo, makeUnique);
}
} public MainWindow()
{
InitializeComponent();
this.diagram.ServiceLocator.Register<ISerializationService>(new CustomSerializationService(this.diagram));
DragDropManager.AddDropHandler(this.diagram, OnDiagramDrop);
}
private void OnDiagramDrop(object sender, Telerik.Windows.DragDrop.DragEventArgs e)
{
var data = DragDropPayloadManager.GetDataFromObject(e.Data, typeof(DiagramDropInfo).Name);
if (data is DiagramDropInfo)
{
SerializationService.Default.DeserializeItems(((DiagramDropInfo)data).Info, false);
}
}
A XamlParseException is raised when the theme's resource dictionaries are not merged in App.xaml. The missing resource is the RepeatButtonStyle resource.
To work this around, merge the resource dictionaries for the theme in the Resources collection of the App.xaml file.
When trying to install one of the following nuget packages an error occurs:
- Telerik.Windows.Controls.EntityFramework60.for.Wpf.Xaml
- Telerik.UI.for.Wpf.AllControls.Xaml (which contains the EF6 package from the previous bullet)
The same issue manifests with the NoXaml version of the same packages.
The error message is:
Severity Code Description Project File Line Suppression State Details Error Failed to add reference. The package 'Telerik.Windows.Controls.EntityFramework60.for.Wpf.Xaml' tried to add a framework reference to 'EntityFramework' which was not found in the GAC. This is possibly a bug in the package. Please contact the package owners for assistance. Reference unavailable.