Telerik UI for ASP.NET AJAX

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Telerik UI for ASP.NET AJAX

Release History

UI for ASP.NET AJAX R3 2021 (version 2021.3.914)

September 14, 2021


  • New DateRangePicker control
  • Change Flash gif link in AnimationFramework to HTTPS


  • No postback needed for MultiView Calendar fast navigation
  • Focus and Modifier Keys configuration implemented
  • Escape does not re-focus the DateInput/Popup button
  • JavaScript error on arrow key navigation of blank RadDatePicker Calendar when min and max date is set to same date
  • JAWS does not announce the selected date in the Date Grid
  • The TAB does not refocus the DateInput back from the popup


  • Sending message causes the toolbar to shift down


  • Export to PDF Title is No Longer Working as Expected


  • Attach events not working for RadEditor when not initially visible in Firefox
  • Maximum call stack size exceeded error while executing filter StripDomEventAttributesFilter with multiple RadEditors


  • Export to PDF Title is No Longer Working as Expected


  • RadFormDecorator causes distorted checkboxes appearance in HeaderContextMenu


  • Media player throws The given key was not present in the dictionary error when a video in YouTube playlist is missing a thumbnail


  • pTelerik.Web.UI.Skins|Telerik.Web.UI.Skins.Web20Lite.Notification.Web20.css does not exist error


  • Handle import of documents containing Simple fonts with names of entries in the Encoding`s Differences that are not part of the Adobe Glyph List.
  • Introduced support for handling documents containing invalid cross-reference table start index.
  • An ArgumentOutOfRangeException is thrown when importing a document containing a specific image stream.
  • Unable to import field with a name that is not specified as a literal string.
  • An exception is thrown when the NormalContentSource of a widget is null and one flattens the form fields.
  • An exception is thrown when importing a file with LabColor gradients.
  • Checkbox fields are exported with the wrong state.
  • Checkbox fields that have a value set to No are exported with the wrong state.
  • Importing a document containing Location with the only page in it causes ArgumentOutOfRangeException.
  • Scrolling a large document causes an OutOfMemoryException.
  • RadFixedPage`s MediaBox and CropBox are not copied when calling the RadFixedDocument.Clone() method.


  • OnClientProgressUpdating continues firing when upload is completed if AsyncUpload is in
  • element


  • WebService binding, JavaScript error when localizing the Recurrence editor


  • Exporting sheet properties corrupts the file and it cannot be opened in Excel.
  • An exception is thrown when calling AccountingFormatStringBuilder.BuildFormatString.
  • The column cannot be auto-fitted when it contains cells merged across rows.


  • Calendar popup date selection is not working when a second radspreadsheet is placed


  • Introduced API for exporting the page setup. Now you can set page settings for printing like orientation, size, scale factor, and fit to contents.
  • Intruduced API for setting culture-independent number formats.
  • Some applications like Open Office cannot import dates exported with SpreadStreamProcessing.
  • Measuring cell content size leads to wrong results.


  • DropClue styles for arrows when reordering Vertical TabStrip are missing
  • Newly created child tab not showing up


  • MinWidth and MaxWidth are not respected when they are set to the same value with Width


  • Introduced support for column width defined inside colgroup and col tags when importing HTML.
  • Introduced a way to replace text with other document elements.
  • An exception is thrown trying to import HTML that contains width with an empty value.
  • InvalidOperationException is thrown while importing DOC file with invalid tab stop leader value.
  • List indent is respected instead of locally set paragraph indent when exporting to PDF.
  • NullReference exception when importing document with fields and a table in the footer.
  • When the inline image has only the width set, the image size is wrongly calculated when converting to PDF.
  • Fixed image size set in style does not respect unit type.
  • Missing images after importing a DOC file.
  • A NotSupportedException is thrown while importing DOC file with tab stops that are aligned to lists.
  • Numeric formatting of merge field is not respected when the data is set as double or float.
  • Wrong numbering position when a paragraph contains numbering in the style and a page break.
  • HtmlFormatProvider: KeyNotFoundException is thrown while exporting list whose first level has RestartAfterLevel=0.
  • A NullReferenceException is thrown when importing DOCX document containing AltChunk element.
  • Missing content when exporting a document containing a Field that has no Separator set.

Telerik UI for ASP.NET AJAX

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