Telerik blogs
DotNetT2 Dark_1200x303

The R3 2020 Service Pack release of Telerik UI for WinForms is now live! Enjoy a wide range of enhancements and customer-requested features.

Customers’ satisfaction is always our top priority, so in this Service Pack we focused on addressing recently reported issues. Additionally, we have introduced the most voted new features. Let’s unpack the Service Pack!

Hide/Unhide a Sheet in RadSpreadsheet

The SheetSelector's context menu allows hiding/unhiding a sheet. It utilizes the Sheets Visibility functionality in the RadSpreadProcessing library.

"Hide" - hides the selected sheet. If this is the last visible sheet, an alert is shown that it is not possible to hide it.

"Unhide..." - enabled if there is at least one hidden sheet. Shows a dialog when clicked. In the dialog the user can select, which sheets to unhide.

Telerik UI for WinForms Hide Unhide Sheet

DataMatrix Barcode


We have a new addition to the 2D-Barcodes family. Data Matrix barcode is a two-dimensional type of code used widely in industry for marking small parts and items due to its high data density and reliability. Data Matrix code consists of dark and light square cells that form a matrix. The produced code can be square or rectangular and can have size up to 144x144 for square codes or 16x48 for rectangular codes. To provide better readability, the Data Matrix code includes an error correction algorithm, allowing you to reconstruct up to 30% of a damaged code image.

Telerik UI for WinForms DataMatrix Barcode

RadSplitContainer Improvements

RadSplitContainer comes with left and right arrow buttons on every SplitterElement for easier navigation. Thus, the users are able to collapse the SplitPanels to the desired location.

Telerik UI for WinForms RadSplitContainer Left Right Arrows

The new DefaultCollapseDirection property gives you the opportunity to specify the default collapse direction. For horizontal splitters, you can set RadDirection.Up or RadDirection.Down. For vertical splitters, you can set RadDirection.Left or RadDirection.Right.

XLS Exports

RadSpreadProcessing library now supports XlsFormatProvider, which makes it easy to import and export to XLS (Excel 97-2003 Workbook) files. GridViewSpreadExport, PivotGridSpreadExport and the rest of the Telerik WinForms spread exports that rely on the library now allow exporting to XLS as well.

RadSpreadsheet also supports exporting to XLS format.

.NET Core 3.1 Design Time Support

We are thrilled to announce that the Telerik UI for WinForms suite now provides design time support for .NET Core 3.1. Toolbox improvements are also released and now all controls are visible in toolbox. Stay tuned for what is coming next.

Do not forget that the design time assemblies in .NET Core are resolved via the installed in the project NuGet packages. In order use the new designers, please make sure that the following requirements are met:

Last, but not least, we are thankful for all the feedback we have gathered, and we invested our efforts to make the suite even better, by introducing over 30 improvements in total.

Try It Out and Share Your Feedback

The R3 2020 SP1 is already available for download in customers’ accounts. If you are new to Telerik UI for WinForms, you can learn more about it via the product page. It comes with a 30-day free trial, giving you some time to explore the toolkit and consider using it for your current or upcoming WinForms development.

We would love to hear what you think, so should you have any questions and/or comments, please share them in our Feedback Portal.

You can also check our Release History page for a complete list of the included improvements.

Want More from the Telerik Team?

Check our latest eBook: Unit Testing in .NET—The Complete Guide was just published and you can download it for FREE. This eBook should be helpful to you whether you’re exploring the fundamentals for the first time, refreshing your knowledge, or are in a role where you’re guiding other developers or managing projects.

About the Author

Desislava Yordanova

Desislava Yordanova is currently a Senior Technical Support Engineer in the Telerik UI for WinForms team. She joined the company in 2013 after graduating from Telerik Academy. Desislava holds a master’s degree in Computer Systems and Technologies from the Technical University in Sofia. Apart from her job, she is keen on snowboarding and travelling. You can find Desislava on LinkedIn.

Related Posts


Comments are disabled in preview mode.