Telerik UI for Winforms

Release History

UI for WinForms R3 2023 SP1 (version 2023.3.1114)

November 15, 2023

What's new

  • RadNavigationView: Add header and footer area in the navigation container.


  • When spanning inline content control on three pages, an exception is thrown while scrolling to the second page.
  • The border of the ContentControl is displayed abnormally when the paragraph's TextAlignment is set to Center or Right.
  • The AnnotationRange is lost during the export of a DocumentFragment created from the current selection.
  • Shift + Right arrow navigation selects the entire word instead of the previous letter when inside a table.
  • MergeField is displayed wrong in MS Word when the document is exported to DOCX and DocxExportSettings FieldResultMode is set to DisplayName.
  • ClearNestedFields throws a NullReferenceException when there is a page counter in the footer.


  • Typos in several property names.


  • A NullReferenceException is thrown when parsing Type1 font without Private Dict.
  • Blank view when resizing some pdf documents in FitFullPage mode.


  • SelectedObjects property not working correctly with objects that implement ICustomTypeDescriptor.


  • Expose API to lazily create the up and down buttons.
  • The button's width in the RadCalculatorDropDown and RadSpinEditor is less than the buttons in other editors in the Office2010 themes.


  • Current and expander icons overlap each other in hierarchy mode.
  • When expanding a row in hierarchical virtual grid this row doesn't become current/selected.


  • The ThemeViewer project is now added to the .NET Core solution.


  • RadControl/TPF: Floods the windows message queue with WM_TIMER messages.


  • PdfProcessing: Wrong font file loaded when CidType2Font with Standard name.
  • An OverflowException is thrown when importing a document with a signature that has an empty Location string.
  • An InvalidOperationException is thrown when rerendering an encoded image.
  • An IndexOutOfRangeException is thrown when concurrent accessing the FontsRepository.RegisterFont method from different threads.
  • An endless loop when trying to parse image data between ID and EI keywords.
  • An Exception is thrown when trying to import a file generated with the PdfProcessing library from HTML.


  • A System.ArgumentException is thrown when protecting a sheet in an async scenario.
  • An InvalidOperationException is thrown in files where the Comments part is imported after the ThreadedComments part.
  • A FormulaParseException when importing XLS document containing #REF error in the formula.
  • OpenOffice cannot open the generated XLSX files.


  • Introduced a mechanism to replicate the whole row when a nested mail merge is executed on a table with only one column.
  • A NullReferenceException is thrown when a nested mail merge group starts inside a table and ends outside the table.
  • Merge field group in a single table cell causes it to replicate more times than expected.
  • PdfFormatProvider: Exception is thrown when converting a table with empty runs in the cells.
  • The list item (HTML) that contains a paragraph is shown on the next line when exported to PDF.
  • Importing a DOC file where the entire content is in a table, leads to an endless loop.
  • Having an empty list in HTML documents breaks the other lists' numbering during import.
  • Fonts that are not surrounded by curly braces cannot be imported in the RTF format.
  • ArgumentNullException is thrown when importing documents containing linked picture references.


  • A System.NotSupportedException is thrown when trying to serialize a class into an ArchiveEntry stream.

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