Release History

Telerik UI for ASP.NET AJAX 2025.2.520 (2025 Q2)

May 21, 2025

Common

Breaking Changes

• Unified distribution for trial and commercial packages: Streamlined user experience by consolidating trial and commercial packages into a single unified distribution for Telerik UI libraries. Access is now managed through a license key file, eliminating the need for separate trial downloads. For more information, please refer to the Licensing Documentation.
• For basic compression/decompression tasks, the Telerik Document Processing Libraries now use System.IO.Compression instead of Telerik.Zip.

What's New

NEW

• New Badge Component.
• Updated Source code build instructions.
• Document Processing Library: Added support for querying and summarizing PDF content using AI, enabling users to interact with and extract insights from PDF files.
• Document Processing Library: Introduced multiple Digital Signatures support.

FIXED

• Object doesn't support property or method 'attachShadow' in IE mode of Microsoft Edge.

AIPrompt

NEW

• Add Visual Studio Designer for the AIPrompt component.

ComboBox

FIXED

• This element has a mismatch between the value of its readonly and aria-readonly attributes.
• Update the aria readonly label

DateInput

FIXED

• Invalid regular expression in the RadDateInputScript.js script.

FloatingActionButton

FIXED

• Setting Enabled=false for FloatingActionButton items does not disable the item.
• Adjust opacity for disabled FloatingActionButton items.

Grid

FIXED

• Bootstrap skin sets an incorrect height via .rgBatchContainer in Batch edit mode.
• Improved WebClient usage in the Image Export.

HtmlChart

NEW

• No-Data Template.

Input

FIXED

• TextBox set_enable() method is not working properly.

Navigation

FIXED

• Invisible item participates in keyboard navigation.

PdfProcessing

NEW

• Introduced multiple Digital Signatures support.
• Introduced support for Marked Content.
• RadFixedPage.CropBox is now respected when exporting to image with SkiaImageFormatProvider.
• Hierarchical document structure (import-export) is now preserved.
• PdfStreamWriter: AdditionalActions (AA) are now exported when merging pages.
• Introduced support for UnShrinking - Method 1.
• Introduced partial support for GoToR action.
• Handled the import of documents with null elements in the Associated Files (/AF) collection.
• Handled the import of documents with Associated Files elements whose content is set to null.
• Exposed Clone methods for cloning PositionContentElements (Path, Image, Form, TextFragment).
• Tesseract OCR now works on Linux platforms.
• Introduced support for Launch action.
• Added support for querying and summarizing PDF content using AI, enabling users to interact with and extract insights from PDF files.
• Fields that are not in the fields dictionary are now imported.

FIXED

• Wrong image export when a document is signed and has indexed color space.
• Wrong font is loading when FontFile2 is CFF (Compact Font Format).
• A NotImplementedException is thrown when calling Type1FontSource.GetCapHeight() method.
• The StokeAlphaConstant is not handled correctly when applied on a TextFragment.
• SkiaImageFormatProvider: Wrong glyph rendering due to incorrectly parsed Type1Font glyph data.
• SkiaImageFormatProvider: IndexOutOfRangeException is thrown due to wrongly processed image data.
• A NullReferenceException is thrown when the GetAllTextFromImage method is executed on a blank image without text.
• A NotImplementedException is thrown for the SvgFontDefn's MeasureCharacters method.
• An InvalidDataException: 'Unknown compression method (0x3C)' when importing a file with XRef table defined in an object with FlateDecode filter.
• An InvalidCastException is thrown when importing a document with an annotation declared in the Fields collection.
• Exporting a specific PDF file generates large amounts of ExtGState entries.
• An ArgumentOutOfRangeException is thrown when creating a CapPathRound for an SVG element.
• An ArgumentNullException is thrown when importing a document with widget annotations and null state appearance.
• A NullReferenceException is thrown while importing document without AcroForm, containing fields defined in the widget annotation.
• Form Fields are not copied when merging documents` pages using PdfStreamWriter.

Breaking Changes

• Removed PdfExportSettings.ShouldEmbedFonts obsoleted API.

Spell

NEW

• Add mixed capitalization check to RadSpell with new WordIgnoreOptions.MixedCapitalization setting.

FIXED

• Fixed Uncaught SyntaxError Unterminated string in JSON

SpreadProcessing

NEW

• Updated the implementation of the SimpleTextMeasurer to use AvarageFontWeigth.

FIXED

• XlsFormatProvider: FormulaParseException is thrown when importing a document with formulas referencing non-existent named ranges.
• An InvalidOperationException is thrown when a comment uses legacyDrawingHF element instead of legacyDrawing.
• Incorrect timestamp of DateTime with custom number format.
• Exception Sequence contains no matching element is thrown on importing a document with a comment without an author.
• Using timeout with Timespan.MaxValue results in ArgumentOutOfRangeException: 'Specified argument was out of the range of valid values. (Parameter 'delay').
• Incorrect format result when the fraction format is applied and the worksheet contains fractions with a fractional part higher than 0.5.

WordsProcessing

FIXED

• Simulated bold text loses its boldness after exporting a DOCX file to PDF format.
• A NullReferenceException is thrown when importing documents with moved content when Track Changes is enabled.
• HTMLFormatProvider: Exporting to HTML does not preserve line spacing.
• Document's East Asia font falls back to a different font when opened in MS Word.
• If At Least line spacing is smaller than the font size, it causes squished lines when exported to HTML.
• Wrong glyph rendering when the Type3FontGlyphSource.Width is not consistent with the font`s Width.
• An InvalidOperationException is thrown when document with comment on a deleted text is imported.
• An ArgumentException is thrown when a theme element does not have a name.

ZipLibrary

NEW

• EncryptionSettingsBase constructor and Algorithm property have been removed; use the static creation methods instead.
• Implemented timeout for creating, updating and reading of zip archives.

Breaking Changes

• ZipArchive constructors have been removed. Use the static methods instead.
• DefaultCryptoProvider class has been removed. Use PkzipCryptoProvider instead.
• DefaultEncryptionSettings class is now removed. Use the static creation methods of the EncryptionSettings class instead.
• ShouldEmbedFonts property of the PdfExportSettings has been removed. Use FontEmbeddingType instead.