Unplanned
Last Updated: 23 Mar 2026 16:40 by Martin Ivanov

The label of the field that allows you to set the ScreenTip in the Hyperlink dialog is not vertically centered to the associated textbox visual. This reproduces in the Windows11 theme.

To work this around, get the TextBlock element in the Hyperlink dialog and set its VerticalAlignment property to Center.

private void RadSpreadsheet_Loaded(object sender, RoutedEventArgs e)
{
    var hyperlinkDialog = this.spreadsheet.ActiveWorksheetEditor.Dialogs.HyperlinkDialog as HyperlinkDialogContent;
    hyperlinkDialog.Loaded += HyperlinkDialog_Loaded;
}

private void HyperlinkDialog_Loaded(object sender, RoutedEventArgs e)
{
    var dialog = (HyperlinkDialogContent)sender;
    var screenTipLocalizedText = LocalizationManager.Manager.GetStringOverride("Spreadsheet_InsertHyperlinkDialog_ScreenTip");
    var screenTipTb = dialog.ChildrenOfType<TextBlock>().FirstOrDefault(x => x.Text == screenTipLocalizedText);
    if (screenTipTb != null)
    {
        screenTipTb.VerticalAlignment = VerticalAlignment.Center;
    }            
}

Unplanned
Last Updated: 23 Mar 2026 15:49 by Martin Ivanov
Currently, the headers of the menu items in the context menu are hardcoded. Add localization support so they change based on the applied culture.
Unplanned
Last Updated: 06 Mar 2026 13:57 by Manish

We have a document in XLS format produced by GemBox. The yellow cells get black once the document is imported and then exported (back to XLS or XLSX) with RadSpreadProcessing.

Duplicated
Last Updated: 06 Mar 2026 14:17 by ADMIN

Hi Team,

   I have backported the Xlsx file to Xls format. When I am trying to import the backported file using the Radspreadsheet UI control, I find that it has lost the color formatting which was existing in the original Xlsx file. Where as when we open the back ported file with Excel application we find that all the data and formatting is maintained.

So the request is that after backporting  and while importing the file, it should not loose the minimal xls supported features which Excel is able to support.





Attached is the InitialFile.xlsx and BackPorted.xls file

Note that Xlsx file if imported it maintains the data and formatting information of the workbbok when loaded via UI control.
Let us know in case of any more details or queries.

Exepct this to work

Regards,

Manish.

Unplanned
Last Updated: 09 Jan 2026 16:01 by Stenly
Currently, when using the RadSpreadsheet with the RadSpreadsheetRibbon, the performance can be reduced when performing selection and edit operations in fast succession.

We could check if we could improve the performance in this scenario.
Completed
Last Updated: 11 Feb 2026 09:14 by ADMIN
Release 2026.1.211 (2026 Q1)

The fill selection stops working, after a filtering is applied and the currently selected cell is filtered out (it gets hidden). This prevents from displaying the fill selection cross displayed when you hover the bottom right corner of a selected cell. Any further changes in the selection doesn't re-enable the selection fill feature.

To work this around, you can set the IsEnabled property of the FillSelection on selection changed.

private RadWorksheetEditor activeWorksheetEditor;

public MainWindow()
{
  InitializeComponent();

  this.spreadsheet.ActiveSheetEditorChanged += (s, e) =>
  {
 if (activeWorksheetEditor != null)
 {
 activeWorksheetEditor.Selection.SelectionChanged -= Selection_SelectionChanged;
 }

 activeWorksheetEditor = this.spreadsheet.ActiveWorksheetEditor;
 activeWorksheetEditor.Selection.SelectionChanged += Selection_SelectionChanged;
  };
}

private void Selection_SelectionChanged(object? sender, EventArgs e)
{
  this.spreadsheet.ActiveWorksheetEditor.Selection.FillSelection.IsEnabled = true;
}

Completed
Last Updated: 11 Feb 2026 09:14 by ADMIN
Release 2026.1.211 (2026 Q1)
Multiple rows are not selected in FindAll (Ctrl+F) on the Spreadsheet.
Unplanned
Last Updated: 11 Sep 2025 19:32 by Martin Ivanov

When filter is added to merged cells, there should be a single filter icon displayed in the combined cell. Instead, multiple filters appear - one for each column in the range of the merged cells.

Unplanned
Last Updated: 22 Aug 2025 06:17 by Jonas

Handle the case when the cell is too small and the value contains a decimal separator. 

For example, see attached images. 

Completed
Last Updated: 11 Nov 2025 08:11 by ADMIN
Release Telerik UI for WPF 2025.4.1111 (2025 Q4)
When selecting multiple cells, clicking on the current active cell (which is selected) does not clear its selection but moves the active cell to one of the other cells from the selected range.
Unplanned
Last Updated: 12 Aug 2025 13:14 by Stenly
Using the print preview dialog to customize the printing, the page range is not correctly transferred when the FromPage is set to a value higher than 1.

For example, if the total page count is 11, setting the FromPage to 2 and ToPage to 8, the page range in the native PrintDialog will be set to 2-7. Setting the FromPage to 3 and the ToPage to 8 will result in the page range to be 3-6.
Unplanned
Last Updated: 08 Aug 2025 09:33 by Victoria
The Find and Replace Dialog does not adjust label widths automatically to accept a longer string when using French culture.
Unplanned
Last Updated: 08 Aug 2025 09:28 by Victoria

 Missing localization strings in PageSetup dialog. 

Go to the headers and footers section. The localization is missing.

Unplanned
Last Updated: 16 Jul 2025 10:40 by Martin Ivanov
Currently, if you have a cell that merges into multiple columns, when you click on the column header, this will select also the adjacent columns where the merged cell extends. Add an option to disable this functionality and select only the cells in the clicked column.
Completed
Last Updated: 20 Aug 2025 15:23 by ADMIN
Release 2025.3.812 (2025 Q3)
When selecting multiple cells while holding the CTRL key, a selected cell cannot be excluded from the selection when clicking on it.
Unplanned
Last Updated: 02 Jul 2025 13:39 by Stenly

When applying a ListDataValidation, the created RadDropDownButton, which has a RadPathButton in it, looks broken when using the Windows11, Office2013, Office2019, and VisualStudio2019 themes.

Unplanned
Last Updated: 16 May 2025 06:18 by Jonas
Introduce support for sorting columns that contain merged cells. 
Unplanned
Last Updated: 07 May 2025 09:02 by Stenly

The CustomFilterDialogContent element's OK and Cancel buttons are different in size for the Windows 11 theme.

To work this around, you can subscribe to the Loaded event of the CustomFilterDialogContent element and retrieve the RadButton with x:Name="PART_ButtonCancel" via the ChildrenOfType extension method. On the retrieved button, set the VerticalAlignment property to Center.

The following code snippet showcases this suggestion's implementation:

static MainWindow()
{
    EventManager.RegisterClassHandler(typeof(CustomFilterDialogContent), LoadedEvent, new RoutedEventHandler(OnCustomFilterDialogContentLoaded));
}

private static void OnCustomFilterDialogContentLoaded(object sender, RoutedEventArgs e)
{
    RadButton cancelButton = ((CustomFilterDialogContent)sender).ChildrenOfType<RadButton>().FirstOrDefault(x => x.Name == "PART_ButtonCancel");

    if (cancelButton != null)
    {
        cancelButton.VerticalAlignment = VerticalAlignment.Center;
    }
}

Unplanned
Last Updated: 31 Mar 2025 09:35 by Martin Ivanov

The horizontal ScrollBar of RadSpreadsheet is missing the bottom border of its track. Additional to that there is a slight offset between the right end of the viewport and the right button of the ScrollBar.

To work this around, set the Margin of the horizontal ScrollBar to 0, and modify its ControlTemplate so that it adds a bottom border for the track's RepeatButton elements.

private void RadSpreadsheet_Loaded(object sender, RoutedEventArgs e)
{
    var spreadsheet = (RadSpreadsheet)sender;
    var scrollBar = spreadsheet.ChildrenOfType<ScrollBar>().FirstOrDefault(x => x.Name == "HorizontalScrollBar");
    scrollBar.Margin = new Thickness(0);
    scrollBar.Template = (ControlTemplate)this.Resources["MyCustomScrollBarTemplate"];
}

Unplanned
Last Updated: 30 Jan 2025 08:54 by Stenly

For the German language translations, the following resource keys are translated into Dutch instead:

  • Spreadsheet_PrintPreview_FitSheetOnOnePage
  • Spreadsheet_PrintPreview_FitSheetOnOnePage_Description
  • Spreadsheet_PrintPreview_FitColumnsOnOnePage
  • Spreadsheet_PrintPreview_FitColumnsOnOnePage_Description
  • Spreadsheet_PrintPreview_FitRowsOnOnePage
  • Spreadsheet_PrintPreview_FitRowsOnOnePage_Description
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