Telerik UI for WPF

Release History

UI for WPF R3 2017 SP1

October 17, 2017

All Controls

  • Content of some controls is not visible if System.Windows.xaml is not merged when using implicit styles with Material theme.


  • Added attached property ComboBoxToolTipHelper.ShowToolTipOnTrimmedText. When true it will show tooltip set on RadComboBox only when the Text of the control is trimmed and the drop down is closed.


  • Changing Start/End point of reflexive Bezier throws ArgumentOutOfRangeException.


  • Pane close button has additional border for Green, Office2016 and Office2016Touch themes with StyleManager.
  • DropDownDisplayMode = WhenNeeded is not working in Green, Office2016, Office2016Touch and Material themes.


  • Expander arrow is not rotated in Office2016 and Office2016Touch themes.


  • Added Filter,DefaultExt and FilterIndex properties of RadOpenFileDialog and RadSaveFileDialog. Filter allows users to filter the displayed files by their types.
  • DropDown border of LayoutConfigurator RadComboBox is missing in Office2016 and Office2016Touch themes.
  • InvalidOperationException is thrown when ListBoxItem is clicked in RadBreadcrumb's ListBox.
  • CurrentItem is changed when you type in Breadcrumb in Office2016, Office2016Touch and Material themes.


  • ClipboardCopyMode exposes new member - SkipEmptyColumns. Depending on whether it is set or not, an empty value will be copied or not.
  • Introduced ShowGroupHeaderRowAggregates bool property in GridViewDocumentExportOptions to show/hide group header row aggregates in exported documents.
  • When all values in one of the columns which is not the last one are null, the headers mismatch on copying.
  • Filtering icon in HeaderCell is not visible when GridView is loaded deferred in Material theme.
  • StringFilterEditor has wrong style in Material theme when it is set through StyleManager.
  • Occasionally group header aggregates shown misplaced values when scrolling.
  • FrozenColumnSplitter's drag visual is not clearly visible in Material theme.
  • Search as you type hangs when a highlighted cell is focused after search.
  • Setting HyperLinkColumn as current column and scrolling horizontally drastically degrades performance.
  • DisplayMemberPath of GridViewComboboxColumn is now exported rather than SelectedValueMemberPath.


  • Disabled MaskedInput accepts input from context menu.

MS Controls

  • CheckBox and RadioButton are too light in disabled state in Material theme.

PDF Viewer

  • Annotations are not printed.
  • Highlight annotation covers the text it highlights.
  • StackOverflowException occurs when importing widget with zero width or height.


  • NullReferenceException is thrown when importing Widget without parent FormField.
  • ArgumentNullException is thrown when importing FormField with resources defined locally instead of defined in AcroForm object.
  • Field Name is modified when importing and exporting PDF with PdfFormatProvider.


  • Minimize ribbon button is missing in Contextual RadRibbonTab in Office2016, Office2016Touch and Material themes.
  • ApplicationButton's popup does not get properly clipped after runtime theme change.


  • Memory leak when editing or exporting a document containing a field in header or footer.
  • Words with apostrophes are considered invalid by the spell checker.
  • Memory leak when creating a deep copy of a section results in keeping a reference to multiple RadDocument instances.
  • Image property of FormattingColorPicker cannot be set when in external Data Template.
  • Arabic words are displayed out of order when containing specific Arabic characters.
  • Html format provider: Slow performance caused by handled KeyNotFoundException during import.


  • When both EnableSmallAppointmentRendering and ShowAllDayArea properties are set to true, an all-day Appointment with 0 duration is not rendered correctly.
  • Another appointment is selected after editing an occurrence from a series.


  • Contracted negative forms are not recognized for TextBox and RichTextBox when the SpellCheckingMode is WordByWord.


  • Mouse cursor breaks after mouse moves over the control.
  • Entering in edit mode does not focus the custom editor.
  • Navigating through cells while editing raises EditorNeeded event with wrong Column arguments if you have a pinned column.
  • A NullReferenceException is thrown when using the FitColumnWidthToContent method and RadVirtualGrid is not loaded.


  • Added a blinking effect for the RadWindow when in modal form and its owner is clicked. This will affect non modal RadWindow as well - it will appear differently when inactive. This behavior can be changed using the ShouldUpdateActiveState property.

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