Recently Updated
Completed
Last Updated:
24 Jun 2026 10:48
by ADMIN
Release 2026.2.624 (2026 Q2)
Created by:
Mandip Kaila
Comments:
4
Category:
SpreadProcessing
Type:
Bug Report
Opening a file where there is a format string with modificator [Color11] causes an ArgumentException "Invalid modificator" This prevents the file from opening.
Completed
Last Updated:
24 Jun 2026 10:31
by ADMIN
Release Scheduled For = 2026.2.624 (2026 Q2)
Created by:
Eric Moreau
Comments:
0
Category:
SpreadProcessing
Type:
Bug Report
An error occurs while importing an XLSX document with charts. Here is the stack trace:
at Telerik.Windows.Documents.Spreadsheet.FormatProviders.OpenXml.Xlsx.Contexts.XlsxWorkbookImportContext.PairSeriesGroupsWithAxes() at Telerik.Windows.Documents.FormatProviders.OpenXml.Model.Elements.Chart.PlotAreaElement.CopyPropertiesTo(IOpenXmlImportContext context, DocumentChart chart) at Telerik.Windows.Documents.FormatProviders.OpenXml.Model.Elements.Chart.ChartElement.CopyPropertiesTo(IOpenXmlImportContext context, DocumentChart chart) at Telerik.Windows.Documents.FormatProviders.OpenXml.Model.Elements.Chart.ChartSpaceElement.OnAfterRead(IOpenXmlImportContext context) at Telerik.Windows.Documents.FormatProviders.OpenXml.Model.Elements.OpenXmlElementBase.Read(IOpenXmlReader reader, IOpenXmlImportContext context) at Telerik.Windows.Documents.FormatProviders.OpenXml.Model.Parts.ChartPart.Import(IOpenXmlReader reader, IOpenXmlImportContext context) at Telerik.Windows.Documents.FormatProviders.OpenXml.Model.Parts.OpenXmlPartBase.Import(Stream stream, IOpenXmlImportContext context) at Telerik.Windows.Documents.FormatProviders.OpenXml.OpenXmlImporter`1.ImportPartFromArchive(ZipArchiveEntry zipEntry, PartBase part, IOpenXmlImportContext context) at Telerik.Windows.Documents.FormatProviders.OpenXml.OpenXmlImporter`1.Import(Stream input, IOpenXmlImportContext context) at Telerik.Windows.Documents.Spreadsheet.FormatProviders.OpenXml.Xlsx.XlsxFormatProvider.ImportOverride(Stream input, CancellationToken cancellationToken) at Telerik.Windows.Documents.Spreadsheet.FormatProviders.WorkbookFormatProviderBase.Import(Stream input, Nullable`1 timeout)
Completed
Last Updated:
24 Jun 2026 10:31
by ADMIN
Release Scheduled For = 2026.2.624 (2026 Q2)
Created by:
Joon-Sae
Comments:
0
Category:
SpreadProcessing
Type:
Bug Report
This is the stack trace:
at Telerik.Windows.Documents.Spreadsheet.Utilities.SpreadsheetHelper.UpdateFloatingImageSize(FloatingShapeBase shape) at Telerik.Windows.Documents.Spreadsheet.Utilities.SpreadsheetHelper.CalculateRotatableShapeBoundingRect(Point position, FloatingTransformableShape shape) at Telerik.Windows.Documents.Spreadsheet.Layout.RadWorksheetLayout.CalculateShapeBoundingRect(FloatingShapeBase shape) at Telerik.Windows.Documents.Spreadsheet.Layout.RadWorksheetLayout.UpdateShapesSizeAndPosition() at Telerik.Windows.Documents.Spreadsheet.Layout.RadWorksheetLayout.Measure(CancellationToken cancellationToken) at Telerik.Windows.Documents.Spreadsheet.Layout.RadWorksheetLayout.Measure(CellIndex frozenCellIndex, CancellationToken cancellationToken) at Telerik.Windows.Documents.Spreadsheet.Model.Workbook.UpdateWorksheetLayout(RadWorksheetLayout worksheetLayout, Worksheet worksheet, Boolean isForPrinting, CancellationToken cancellationToken) at Telerik.Windows.Documents.Spreadsheet.Model.Workbook.GetWorksheetLayout(Worksheet worksheet, Boolean isForPrinting, CancellationToken cancellationToken) at Telerik.Windows.Documents.Spreadsheet.Model.Workbook.GetWorksheetLayout(Worksheet worksheet, Boolean isForPrinting) at Telerik.Windows.Documents.Spreadsheet.FormatProviders.OpenXml.Xlsx.Contexts.XlsxWorksheetImportContext.ImportShapesSizes() at Telerik.Windows.Documents.Spreadsheet.FormatProviders.OpenXml.Xlsx.Contexts.XlsxWorksheetImportContext.EndImport(XlsxWorkbookImportContext workbookContext) at Telerik.Windows.Documents.Spreadsheet.FormatProviders.OpenXml.Xlsx.Contexts.XlsxWorkbookImportContext.EndImport() at Telerik.Windows.Documents.FormatProviders.OpenXml.OpenXmlImporter`1.Import(Stream input, IOpenXmlImportContext context) at Telerik.Windows.Documents.Spreadsheet.FormatProviders.OpenXml.Xlsx.XlsxFormatProvider.ImportOverride(Stream input, CancellationToken cancellationToken) at Telerik.Windows.Documents.Spreadsheet.FormatProviders.WorkbookFormatProviderBase.Import(Stream input, Nullable`1 timeout)
Completed
Last Updated:
28 May 2026 11:11
by ADMIN
Release 2026.2.519 (2026 Q2)
Created by:
Patrick
Comments:
0
Category:
SpreadProcessing
Type:
Bug Report
For example:
Renaming a sheet named "Sheet1" to "Sheet 1", should update formulas references to it to 'Sheet 1!' (notice single quotes), which it does not. The formula =SUM(Sheet1!A2:C2) changes to the invalid expression =SUM(Sheet 1!A2:C2). This breaks formulas referencing that sheet.
Workaround:
Iterate all cells with formulas in the workbook and add single quotes to the beginning and end of sheet name reference. The attached project changes the name of Sheet1 and then fixes all formula references to it by enclosing its name in single quotes.
Completed
Last Updated:
28 May 2026 10:46
by ADMIN
Release 2026.2.519 (2026 Q2)
Created by:
TestTeam
Comments:
4
Category:
SpreadProcessing
Type:
Bug Report
This happens only on import, that is, if the values are created through UI or through the model, it does not happen. A sheet has a formula A which depends on a cell B and this cell also has a reference to another cell C and the formula A is so placed in the sheet so that it will be imported before cell B. When cell C is updated, the value in A will not be recalculated.
Completed
Last Updated:
19 May 2026 20:44
by ADMIN
Release 2026.3.519 (2026 Q2)
Created by:
Tim
Comments:
0
Category:
SpreadProcessing
Type:
Bug Report
Code to reproduce:
Workbook wb = new Workbook();
Worksheet worksheet = wb.Worksheets.Add();
PatternFill fill = new PatternFill(PatternType.DiagonalStripe, Colors.Red, Colors.Transparent);
worksheet.Cells[0, 0].SetFill(fill);
string outputFilePath = "Sample.pdf";
File.Delete(outputFilePath);
Telerik.Windows.Documents.Spreadsheet.FormatProviders.Pdf.PdfFormatProvider pdfFormatProvider =
new Telerik.Windows.Documents.Spreadsheet.FormatProviders.Pdf.PdfFormatProvider();
//export to file
using (Stream output = File.OpenWrite(outputFilePath))
{
pdfFormatProvider.Export(wb, output, TimeSpan.FromSeconds(10));
}
Process.Start(new ProcessStartInfo() { FileName = outputFilePath, UseShellExecute = true });
Completed
Last Updated:
14 May 2026 16:33
by ADMIN
Release 2026.2.514 (2026 Q2)
Created by:
David
Comments:
0
Category:
SpreadProcessing
Type:
Bug Report
Images don't move with cells when a row/column is inserted.
Completed
Last Updated:
14 May 2026 16:33
by ADMIN
Release 2026.2.514 (2026 Q2)
Created by:
Dimitar
Comments:
0
Category:
SpreadProcessing
Type:
Feature Request
Introduce calculation chain functionality. This will provide a better mechanism for handling dependent expressions.
Completed
Last Updated:
02 Apr 2026 11:49
by ADMIN
Release 2026.1.402 (2026 Q1)
Created by:
EUNKYUNG
Comments:
0
Category:
SpreadProcessing
Type:
Feature Request
XlsFormatProvider: Add support for hidden rows.
Completed
Last Updated:
02 Apr 2026 11:49
by ADMIN
Release 2026.1.402 (2026 Q1)
ADMIN
Created by:
Tanya
Comments:
0
Category:
SpreadProcessing
Type:
Feature Request
Add support for superscript and subscript font effects for cell formatting. Currently, this is not supported by the model and is omitted on import.
Completed
Last Updated:
02 Apr 2026 11:48
by ADMIN
Release 2026.1.402 (2026 Q1)
Created by:
Christophe
Comments:
2
Category:
SpreadProcessing
Type:
Feature Request
At this point, XlsFormatProvider doesn't support images and they are not imported into Workbook while reading an .xls file.
Completed
Last Updated:
02 Apr 2026 11:47
by ADMIN
Release 2026.1.402 (2026 Q1)
Created by:
Manish
Comments:
2
Category:
SpreadProcessing
Type:
Bug Report
RadSpreadProcessing expects an integer, instead of boolean. However, according to the specification, it should be boolean:
Completed
Last Updated:
02 Apr 2026 11:47
by ADMIN
Release 2026.1.402 (2026 Q1)
ADMIN
Created by:
Deyan
Comments:
0
Category:
SpreadProcessing
Type:
Feature Request
Add support for strikethrough font effect for cell formatting. Currently this is not supported by the model and is omitted on import.
Completed
Last Updated:
02 Apr 2026 11:47
by ADMIN
Release 2026.1.402 (2026 Q1)
Created by:
Manish
Comments:
2
Category:
SpreadProcessing
Type:
Bug Report
The XlsxPartNames class expects a strict name for reading the comments parts:
public const string CommentsPartName = @"/xl/comments{0}.xml";
However, some third-party tools may change the name to GemComments.xml for example.
MS Excel recognizes this naming for the comments part. It would be nice to provide such functionality in RadSpreadProcessing.
Completed
Last Updated:
02 Apr 2026 11:47
by ADMIN
Release 2026.1.402 (2026 Q1)
Created by:
Manish
Comments:
2
Category:
SpreadProcessing
Type:
Bug Report
XlsFormatProvider: InvalidOperationException is thrown when importing a document with an unsupported BIFF record.
Workaround: Re-save the file with Excel before importing it.
Completed
Last Updated:
02 Apr 2026 11:47
by ADMIN
Release 2026.1.402 (2026 Q1)
Created by:
DARS
Comments:
4
Category:
SpreadProcessing
Type:
Feature Request
At this point XLS import of SpreadProcessing does not have support for notes/comments.
Completed
Last Updated:
13 Feb 2026 09:39
by ADMIN
Release 2026.1.210 (2026 Q1)
Created by:
Yannick Patton
Comments:
0
Category:
SpreadProcessing
Type:
Bug Report
LocalizableException is thrown after removing columns from a workbook with set Print Titles.
Workaround - Remove the PrintTitles before removing the columns:
WorksheetPageSetup pageSetup = workbook.ActiveWorksheet.WorksheetPageSetup;
pageSetup.PrintTitles.RepeatedRows = null;
pageSetup.PrintTitles.RepeatedColumns = null;
Completed
Last Updated:
26 Jan 2026 14:29
by ADMIN
Created by:
Marcelo
Comments:
2
Category:
SpreadProcessing
Type:
Bug Report
If the conditional formatting is missing, the copy operation is executed with no errors.
Completed
Last Updated:
12 Nov 2025 11:41
by ADMIN
Release 2025.4.1104 (2025 Q4)
Created by:
Sandy
Comments:
0
Category:
SpreadProcessing
Type:
Bug Report
ConditionalFormattingRange' s Formattings collection is not correctly enumerated when there are rules with intermittent ranges.
Completed
Last Updated:
10 Oct 2025 06:11
by ADMIN
Release 2025.3.1007 (2025 Q3)
Created by:
Sailaja
Comments:
0
Category:
SpreadProcessing
Type:
Bug Report
Stacktrace:
at System.ThrowHelper.ThrowArgumentNullException(ExceptionArgument argument) at System.Collections.Generic.Dictionary`2.FindValue(TKey key) at System.Collections.Generic.Dictionary`2.ContainsKey(TKey key) at Telerik.Windows.Documents.Spreadsheet.FormatProviders.OpenXml.Xlsx.Model.Elements.Worksheets.ConditionalFormattingRuleElementX14.OnAfterRead(IXlsxWorksheetImportContext context) in C:\Work\document-processing\Documents\Spreadsheet\FormatProviders\OpenXml\Xlsx\Model\Elements\Worksheets\ConditionalFormatting\x14\ConditionalFormattingRuleElementX14.cs:line 62