Telerik Reporting

Release History

Progress® Telerik® Reporting R2 2021 (

May 12, 2021

.NET 6 Preview support for desktop viewers and REST service

  • Added support for .NET 6 Preview in the WinForms and WPF report viewers as well as the REST service which they can use as a remote report generation engine.

Enable per-report allowed export formats configuration

  • Now the report model API allows hiding an export option, changing its description, and changing the export parameters for a particular report via the RuntimeSettings report property.

New Band Report themes

  • Added four new report themes to the Band Report Wizard - Kendo Default, Kendo Bootstrap, Office 2019, and Kendo Blue Opal.

Blazor report designer

  • Added a Blazor wrapper for the Web Report Designer jQuery widget. The Blazor Web Report Designer enables seamless integration with Blazor Server and WebAssembly applications.

Drag and drop of components and data fields from Explorer to the design surface

  • Implemented drag & drop behavior for data fields and components from the Explorer tab to easily generate new report items. 

Move multiple selected components over the design surface simultaneously

  • Added support for moving multiple report items at once in order to change their location or parent item.

Telerik Web Report Designer Localization

  • Strings shown in the UI of the Web Report Designer can be translated and replace the default strings. An article has been added to our documentation explaining how this can be done. 

Make IDataItem interface public

  • We exposed the interface that is implemented by all of our DataItem-descendant classes in order to improve the Reporting API and give more control to the users that want to access the report model programmatically.

SwissQR barcode support

  • Added support for the SwissQR barcode - a special kind of QR barcode used in the Switzerland's payment transactions. It is a part of the Swiss QR-bill and imposes strict requirements on the barcode data and parameters.

New dark color variations of VisualStudio2019 and Material themes

  • New themes came out for our beloved Telerik WPF controls suite and we added them to the WPF Report Viewer.

Visual Studio item template for adding the HTML5 Report Viewer in .NET Core projects

  • The HTML5 Report Viewer can now be added to ASP.NET Core 3+ and ASP.NET projects using a Visual Studio item template.

What's Improved

  • A new popup for adding dynamic groups in CrossTab is added.

What's Changed

  • Discontinued support of Microsoft Visual Studio 2010


  • The initialization of JSON-based configuration throws an exception when used in a single-file .NET Core application

Web Service Data Source

  • Configuring Token Path for the 2-step auth in WebServiceDataSource does not work as expected

Standalone Report Designer

  • SVG is not rendered correctly for some specific images
  • The "Find" button in the toolbar does not represent the state of the search dialog

Web Designer

  • "TypeError: Cannot read property 'GetValue' of undefined" when trying to expand conditional formatting style
  • After dragging and dropping a component in the design surface, the explorer tree is not updated
  • Element position is not recalculated after adding/deleting new section
  • Report with special symbols in the name is not saved but a success message is displayed saying the report is saved
  • Unable to select functions for chart fields. All functions are marked "Undefined"
  • Undone delete operation is not applied after report is saved
  • When adding Row Parent Group or Row Child Group in CrossTab , a Column Parent Group or Column Child Group were created respectively
  • Cannot read property 'ConnectionString' of undefined when building new connection in SQL Data Source Wizard
  • Changing the Value of a Report Parameter in Web Report Designer makes it [object Object] and breaks the editor
  • Data Source Wizards should be started regardless the currently selected component.
  • Report should not be saved with an empty name
  • Some of the popups are misplaced when adding a new item in a CollectionEditor


  • Calculated field expression is evaluated for each expression in the report which references the calculated field

HTML Rendering

  • Internal Server Error is thrown in the viewer when the PictureBox's SVG markup starts with an xml tag

PDF Rendering

  • The PDF export option is missing in .NET Core Viewers when using a certificate to sign the produced PDF document


  • The GenericTileProvider doesn't allow to set the UserAgent HTTP header value


  • Nuget package Telerik.Reporting.OpenXmlRendering cannot be added to a project that targets .NET Standard 2.0

WebForms Report Viewer (legacy)

  • The legacy ASP.NET Web Forms viewer may export particular reports in PDF without bookmarks

HTML5 Report Viewer

  • Adding HTML5 Report Viewer and Web Report Designer to the same page breaks the viewer toolbar styles

Angular Report Viewer

  • SignalR jQuery plugin fails to load

Visual Studio Item Templates

  • ArgumentOutOfRangeException is thrown when adding a new web report designer item to an existing .NET Core project
  • The Web Report Designer template for .NET Core may not add required settings in the Startup file
  • WPF Report Viewer cannot be added using the Visual Studio item template

Product Dependencies

Telerik Reporting
- Microsoft .NET Framework 4
- .NET Standard 2.0
- .NET Core 3.1
- .NET 5
- .NET 6 Preview

- Microsoft.AnalysisServices.AdomdClient ( or later)

HTML5 Report Viewer
- Telerik Kendo UI (2015.3.1111 or later)
- jQuery (1.9.1 or higher if required by Kendo)

ASP.NET WebAPI REST Report Service
- Microsoft ASP.NET Web API (4.0.20710.0 or later) - Newtonsoft.Json (9.0.1 or later)

ServiceStack REST Report Service
- ServiceStack (

ASP.NET MVC Extension of the HTML5 Report Viewer
- Microsoft ASP.NET MVC Framework (4.0.20710.0 or later)

WPF Report Viewer for .NET 6
- Telerik UI Controls for WPF (2021.2.511.60) targeting .NET Core 6 Preview

WPF Report Viewer for .NET 5
- Telerik UI Controls for WPF (2021.2.511.50) targeting .NET Core 5

WPF Report Viewer for .NET Core
- Telerik UI Controls for WPF (2021.2.511.310) targeting .NET Core 3.1

WPF Report Viewer for .NET Framework
- Telerik UI Controls for WPF (2021.2.511.40)

Silverlight Report Viewer
- Telerik UI Controls for Silverlight (2021.2.511.1050)

Database cache ICache implementation
- Telerik Data Access ORM (2015.1.220.1)

.NET Core Reporting Engine
- SQLitePCLRaw.bundle_green (2.0.1 or later)

Telerik Reporting

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