Telerik Reporting

Release History

Progress® Telerik® Reporting R3 2021 SP1 (

November 10, 2021

Visual Studio 2022 Support

  • We now support Visual Studio 2022, making sure your development experience will remain great when designing reports using the newest Microsoft IDE.

MSSQL Database Storage now provides an option to configure the SqlConnection CommandTimeout property

  • The SqlConnections CommandTimeout property in MSSQL Database Storage is now configurable through the XML and JSON configurations. MsSqlServerStorage constructor now has an overload with a commandTimeout argument.

A new endpoint "/api/reports/version" is added to the REST Service implementations

  • The REST Service implementations now have an endpoint that returns the version of the server-side service assembly. Useful when troubleshooting scenarios where the client and server versions mismatch.

IReportEngine interface now has a new method GetReportingVersion

  • The method is used internally by the REST Service implementations to return the actual version of Telerik Reporting assemblies through the /reports/version route.  All custom implementations of this interface need to include this new method GetReportingVersion().

What's Improved

  • Display a list of recently opened reports in the main menu of Web Report Designer
  • WebReportDesigner now shows better UI messages in scenarios when the uploading of a report fails or gets rejected
  • User can switch between Grid and List views in the OpenReport dialog of Web Report Designer
  • An error message is now displayed when the report property SkipBlankPages is True and there is an error in the report
  • Increased precision in text rendering on Linux and MacOS platforms
  • The Report class now has a public GetDataSources() method which returns a collection with all data sources in the report definition
  • PathIcons in CommandBar buttons of WinUI Viewer are replaced with FontIcons to achieve icons consistent behavior in High Contrast themes
  • Telerik.ReportViewer.WinUI and Telerik.ReportViewer.WinUI.Themes assemblies now target AnyCPU platform
  • Tooltips on report contents are now displayed in WinUI Viewer

Standalone Report Designer

  • ReportSection's Height property allows to be reset

Web Designer

  • CSV wizard - Separators page, no errors are shown for invalid data
  • The "Add Parameter" button in DataSource wizards routes to Index.razor page in Blazor Web Report Designer
  • A NullReferenceException message is shown when adding a color to the ColorPalette of a Graph or Map item
  • ReportDesignerControllerBase.RenderPictureBoxAsync does not respect IDefinitionStorage.BaseDir
  • An error message "An error has occurred. NaN is not a valid value for Int32." is shown when pasting HEX color value in Background Color input
  • Close the open dialog when a report starts opening
  • Color value set as text in the input is not applied when you click on the design surface or another input
  • Combined width / height editors in PaperSizeEditor should not allow resetting when disabled
  • CSV Data Source Wizard does not allow to reset a column name
  • CSV Data Source Wizard does not persist the column names correctly
  • Data source CalculatedFields are not shown in a table wizard and explorer tree until report is saved
  • DateTime values are not fully visible in DateTime scale properties
  • Error "Could not create instance of 'JsonDataSource'. TypeError: Cannot read property 'push' of undefined" when trying to open JsonDataSource wizard and a report parameter is selected
  • Font alignment options are not positioned correctly in the Font editor
  • InstanceType editors do not have reset
  • Multiple reports can be selected in open dialog
  • Opening or creating a report after the initial report failed to load is creating a second design surface
  • Search in open report dialog is using "StartsWith" and not "Contains"
  • SQL Data Source Wizard does not preview the correct result set if the query has been changed
  • Switching between "Date only" and "DateTime" types in DateTimeScale shows the incorrect Date editor
  • The "Map Columns to Type" page in CSV Data Source Wizard does not have column name validation
  • The action editor fails to update its value when selecting the (none) option
  • The Color editor shows "undefined" labels when editing the ColorPalette of a Graph or Map item
  • The CSV Data Source wizard does not display the types in the "Map Columns to Type" page
  • The CSV DataSource wizard fails to preview when non-letter characters are used in column names
  • The Height property in ReportSections is not mergeable
  • The JSON DataSource Wizard allows to upload an external file even when an inline file is selected
  • The ShapeType editor contains a redundant "Choose an option" entry
  • The Width editor of Report item and the Height editor of ReportSection item have Reset button
  • Visual artifacts are shown in the Open Report dialog while the last opened report is loading
  • When the "Close Upload" button in Open Reports dialog is clicked, the uploaded report is not shown in the list with the available for opening reports


  • The generated PDF or XLS files are corrupted when the report's SkipBlankPages property is set to True and there's no data in the report


  • Selecting a value with no fractional part from a multivalue report parameter of type "float" throws an exception in .NET Core 3.1+ applications

WebForms Report Viewer (legacy)

  • The legacy ASP.NET WebForms viewer has a Path traversal vulnerability

WinUI Report Viewer

  • "Go to first" and "Go to last" button in High Contrast Black theme are with incorrect icon
  • "Processing Resources failed with error: Duplicate entry." after update of Telerik WinUI controls
  • Multiselect parameter editor allows entering random text rather than selecting a value from the provided list
  • No dialog shown when trying to export to formats Excel 97-2003, Web archive, XPS when the report is loaded from report server
  • The file name contains two dots before the extension when exporting to any format and the viewer is connected to a remote rendering engine
  • The loader's overlay text is overlapping the report contents when exporting

Visual Studio Item Templates

  • Additional nested Pages folder is added if you add new item for Blazor viewer or designer while having the existing Pages folder selected
  • The log contains misleading message, informing that a NuGet package is installed when it is not

Product Dependencies

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

- 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)

WinUI Report Viewer
- Telerik UI Controls for WinUI (0.6.0)

WPF Report Viewer for .NET 6
- Telerik UI Controls for WPF (2021.3.1109.60) targeting .NET 6

WPF Report Viewer for .NET 5
- Telerik UI Controls for WPF (2021.3.1109.50) targeting .NET 5

WPF Report Viewer for .NET Core
- Telerik UI Controls for WPF (2021.3.1109.310) targeting .NET Core 3.1

WPF Report Viewer for .NET Framework
- Telerik UI Controls for WPF (2021.3.1109.40)

Silverlight Report Viewer
- Telerik UI Controls for Silverlight (2021.3.1109.1050)

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

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

New features & Roadmap

Have a feature request?

Post your feedback via the Reporting feedback portal or the public forums

What's new across all Telerik products?

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Next Steps

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