Release History

Telerik UI for WPF 2025.2.521 (2025 Q2)

May 21, 2025

Common

Breaking Changes

• Trial and commercial users now use the same product package. The trial and commercial product versions merged into a single unified distribution package. The product access now depends on a license key file. This eliminates the need for separate trial downloads. For more information, please refer to the documentation article.
• The .NET 6 distributions are now discontinued (Windows installer, Visual Studio Extension, NuGet packages, DLLs), following Microsoft's End of Support on November 12, 2024. All distribution files are updated to support .NET 8 version and higher versions.
• CHM and Help3 offline documentation resources are discontinued.
• Removed dependency on Telerik.Windows.Zip library from RichTextBox`s format providers and GridView`s export providers.
• The IsFullTrustExtension markup extension class is removed.

Dependencies

• Telerik Document Processing Library (DPL) version is updated to 2025.2.520
• SkiaSharp package version is updated to 3.116.1.

Visual Studio Extension

NEW

• Included the new Telerik.Windows.Documents.Fixed.FormatProviders.Ocr and Telerik.Windows.Documents.AIConnector dlls/NuGets to Document Processing Libraries wizard.

Buttons

FIXED

• A System.FormatException is raised when using the RadDropDownButton element, the DropDownPlacement property is set to Top, and the Windows 11 theme is applied with the culture being ar-EG.

Diagrams

Breaking Changes

• Deleted the obsolete RadDiagramConnection.ConnectorCenterPoint attached property.

Docking

FIXED

• Unexpected ToolWindow appears after dragdrop scenario with nested docking instances.

FileDialogs

FIXED

• Filter does not work if filename without extension is in the list of extensions.

GridView

FIXED

• Distinct values are not displayed when setting the FilterMemberPath to the Date property of a DateTime DataTable column when it contains DBNull.Value.
• NullReferenceException when automation peers creation goes over the MaxCachedPeersSize value (10,000) and the item type that populates the ItemsSource uses the 'record' modifier.

Map

NEW

• Implemented Language and ApiVersion properties in AzureMapProvider.

MultiColumnComboBox

FIXED

• The glyph on the close button in the SearchAutoCompleteBoxItem element is not visible when using the Material theme with XAML assemblies.

PDF Viewer

FIXED

• A file with a very thin border ( ~0.25 px) thickness is displayed with increased thickness in the displayed document.
• Text is missing when importing a PDF document containing CFF font.
• Wrong image rendering when a document is signed and has indexed color space.

PersistenceFramework

Breaking Changes

• Removed obsolete IsolatedStorageProvider constructor. Removed obsolete AllowedTypesExtensions.AllowAllTypesUnsafe extension method. Removed obsolete ValueProviderAttribute class.

RibbonView

FIXED

• Missing backstage close button top margin when TitleBarVisibility set to Collapsed.

RichTextBox

FIXED

• Exception when one parses styles that contain specific (German) characters.
• If i select multiple Paragraphs and TabForward, all paragraphs will be indented by [indent value]*[selected paragraphs].
• Tab backwards command does not move the caret correctly in a table.
• Text locked or not visible after spacebar in Japanese.
• Importing an RTF or DOCX document containing hyperlinks simultaneously adds FieldRangeStart and HyperlinkRangeStart to the document.
• A new line is ignored after a non-breaking space.

Breaking Changes

• The MouseSelectionHandler(RadDocument document) obsolete constructor of the MouseSelectionHandler class was removed. Instead, use the MouseSelectionHandler(RadDocument document, IDocumentEditorPresenter presenter) constructor.
• The RemoveCustomDictionary(ICustomWordDictionary customDictionary, CultureInfo culture) obsolete method of the DocumentSpellChecker class was removed. Instead, use the RemoveCustomDictionary(CultureInfo culture) method.
• The obsolete constructor of the TextInsertedEventArgs(string text, bool shouldPersist, bool shouldStartNewComposition) class was removed. Instead, use the TextInsertedEventArgs(string text, InputEvents currentEvent, ImeLanguage imeLanguage) constructor.

Spreadsheet

NEW

• Implemented CurrentRegion property that returns a range of all neighboring cells depending on the current selection. This can be used while filtering or with the new shortcut (Ctrl+Shift+*) as well.
• Added information for the clicked cell index in the HyperlinkClickedEventArgs of the HyperlinkClicked event.
• Allow for the HyperlinkClicked event to be raised for links pointing to a cell in the document (the Place in this document option in the hyperlink dialog).

FIXED

• The Cancel button is centered and correctly sized in the 'Custom Filter' dialog on Windows 11 theme.
• Reduced the initial load time of RadSpreadsheetRibbon by optimizing how fonts and styles are initialized.

SvgImage

FIXED

• Setting an SVG file with a matrix will raise an exception when the current culture has a comma as a decimal separator.

SyntaxEditor

FIXED

• Wrong tagging/coloring of multiline comments with the CSharpTagger.

TreeList

FIXED

• The DataFormatString property of the columns is not applied on child rows.

VirtualGrid

FIXED

• Rows and cells cannot be unselected in Multiple and Extended SelectionMode.

VirtualKeyboard

FIXED

• NullReferenceException when the Loaded event is invoked and the control is not added to the visual tree yet.

WebCam

FIXED

• MF_E_SHUTDOWN exception occurs on unload or initialize of RadWebCam.