What's new


Release History

UI for ASP.NET AJAX R1 2023 SP1 (version 2023.1.314)

March 14, 2023


Breaking Changes


  • SingleLineEntries property to display entries in a single line


  • Bug when Button is in ItemTemplate of RadToolBar and the ToolBar is disabled/enabled by code


  • The Prev and FastPrev images are incorrectly positioned in the center of the titlebar


  • ComboBox does not gray out after disabling it with set_enabled(false)


  • RadEditor does not load its content area in Chrome for iOS
  • XHTML Validator not working - document cannot be checked


  • TreeView context menu remains visible when a permission alert is shown


  • Introduced handling for import of documents with invalid offsets of the objects inside the cross-reference table.
  • Introduced handling for import of documents with invalid offsets of the objects inside the cross-reference stream.
  • Introduced a setting that allows exporting images with or without compression.
  • Introduced handling mechanism for import of documents containing indirect objects with no endobj keyword.
  • Introduced the ability to print secured documents.
  • A CryptographicException is thrown when saving with PdfStreamWriter or importing with PdfFormatProvider.
  • Signing documents with a signature field produces documents that lead to errors in Adobe Acrobat.
  • A specific scanned file is not displayed with the new model.
  • Some Image XObjects are imported but not displayed in PdfViewer.
  • Images inside Form XObject are not positioned correctly.
  • A NullReferenceException is thrown when parsing Type1 font without Private Dict.
  • An InvalidCastException is thrown when importing a document containing Byte order marks (BOM) at the beginning of the file.
  • Endless loop when importing a document containing an EI keyword within the image stream.
  • An InvalidCastException is thrown when importing a document containing an Indirect Reference keyword (R) within an image data.
  • Wrong matrix calculations lead to incorrect image (Form XObject) size.
  • An InvalidCastException is thrown when importing Interactive Forms which leads to non-editable fields.
  • An ArgumentException is thrown when the font box contains negative width or height.
  • Field values are lost on import-export using the PdfFormatProvider.
  • Wrong matrix calculations lead to incorrect image (Form XObject) during export.
  • The image stream embedded in a content stream is not compressed while exporting.
  • A large image is rendered slowly, and the memory consumption is huge.
  • А NotSupportedException is thrown when the imported document contains font with embedded CMap table with format 0.
  • Not correct cross-reference table processed when importing documents with more than one table without Prev table specified.
  • An InvalidCastException is thrown when reading a page with specific image data.
  • Images are decompressed during import/export which result in significantly larger files.
  • The import freezes due to a lot of checks in the HandleInvalidClippingPathOperatorPosition method.


  • An InvalidCastException is thrown on import when a drawing in a document contains the ext tag.
  • A NullReferenceException when the document contains paragraph elements with no text.
  • Conditional formatting with formula rule is evaluated incorrectly.
  • COUNTIF function throws exception if the criteria is for finding non-blank cells.


  • Provide API that allows retrieving of the cached formula value.
  • Rows import stops after reading a formula cell.


  • An ArgumentException when importing a document and the culture is set to sv-SE.
  • Exception when parsing various values with the FractionalValueConverter.
  • An InvalidOperationException (Sequence contains no elements) when updating the TOC field in a document.
  • Importing a TOC field with /t switch causes an IndexOutOfRangeException.
  • Table Of Contents (TOC) is populated with additional elements.

New features & Roadmap

Have a feature request?

Post your feedback via the ASP.NET AJAX Feedback Portal.

What's new across all Telerik products?

See the updates feed

Getting Started Section Wavy Background

Next Steps

Launch demos

See Telerik UI for ASP.NET AJAX in action and check out how much it can do out-of-the-box.

Compare pricing

Check out the offers. Purchase an individual suite, or treat yourself to one of our bundles.

Download Free Trial

Try Telerik UI for ASP.NET AJAX with dedicated technical support.