Release History

Telerik UI for Silverlight is Retiring

Driven by the evolution of technology and industry standards, Progress Software is deprecating Telerik UI for Silverlight effective December 1, 2023. Technical support and critical fixes will be available until December 1, 2024.

UI for Silverlight R1 2017 SP1

February 21, 2017

All Controls

  • Introduced new RaisePropertyChanged method in the ViewModelBase that uses the CallerMemberName attribute (.Net 4.5 only).


  • Index returned from HighlightBehavior is not respected when filtered list contains a single item.


  • Nested RadDataForms breaks the control's Commands functionality.


  • Exception in VirtualQueryableCollectionView on filtering with nullable DateTime value.
  • Dragging column header over non reordable column results in permanent Not Allowed drag cue.
  • Improved the initial loading time when adding a large set of column groups.
  • Pressing the edit icon in new row inserts wrong data with GroupRenderMode="Nested".
  • Adding new item through the row indicator while editing a sorted grid, results in wrongly added data of the edited item.
  • An Exception can be thrown when updating the DataContext of the FieldFilterControl and a custom defined controls in the filter are bound to different types.
  • ArgumentNullException is thrown when using search panel and column DataType is not set.
  • Setting IsReadOnlyBinding throws an exception when the binding source is different from the default one.
  • Changing ItemsSource of the GridViewComboBoxColumn runtime leads to empty cells in that column.
  • ErrorIndicator and EditIndicator icons overlap when validating new row in Office2016, Office2016Touch and Green themes.
  • InvalidOperationException is thrown from the synchronization of the pinnedItems state when the ItemsSource collection of RadGridView is changed by asynchronous operations.
  • Clicking row indicator on newly added row adds an additional row.
  • Mouse arrow cursor appears above the drop not allowed icon when dragging column headers.


  • When minimized during run-time change of themes item's header overlaps the minimizing toggle button in some themes.

PDF Viewer

  • Setting VisiblePagesCacheOffset property to int.MaxValue hangs the PdfViewer application.
  • Setting VisiblePagesCacheOffset to cache all PDF document pages slows the initial load for documents with a lot of pages.


  • EndStream keyword cannot be found which results in InvalidOperationException.
  • Metadata streams are not exported as plain text when the exported file is PDF/A.


  • OutOfMemoryException is thrown when loading document containing large images.


  • Implemented virtual UpdateAppointmentItemContentTemplateOverride method.
  • CurrentTimeIndicator rendering optimization.
  • Improved the ScheduleViewDragDropBehavior in order to call ConvertDraggedData only once on mouse enter when the new CacheConvertedDragData property is set to true.
  • If SnapAppointments is enabled the Appointments disappear after dropping them outside of the current day.
  • Using custom LocalizationManager in order to change the ViewDefinitions Title - throws StackOverflow exception.


  • Documents with global print area cannot be imported because of thrown SpreadsheetNameException.
  • General number format containing locale code is not recognized as General and the numbers in the cell are replaced with "General" text content.
  • Images are not rendered when ext tag element has zero width or height.


  • General number format containing locale code is not recognized as General and the numbers in the cell are replaced with "General" text content.
  • Images are not rendered when ext tag element has zero width or height.


  • ObjectDisposedException is thrown when the GC finalize all objects from the ZipArchive.

UI for Silverlight


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