In Development
Last Updated: 30 Oct 2026 13:46 by ADMIN
Scheduled for 2026 Q4 (Nov)

The data source preview in the web report designer does not show the full shape of the query. It has no horizontal scroll bar to verify the preview data for the entire projection.

Please consider addressing this.

In Development
Last Updated: 28 Oct 2026 13:20 by ADMIN
After the REST report service renders a report for the first time, the ASP.NET Core process can no longer exit on its own. On shutdown (Ctrl+C, SIGTERM, or stopping from the IDE) the host logs "Application is shutting down...", every hosted service stops, and Main returns, but the process stays alive because the report-rendering queue’s foreground worker threads are still running. In containers it is only ended when the platform's grace period expires and it is killed (SIGKILL), so every stop or restart of an instance that has rendered a report takes the full grace period.
In Development
Last Updated: 28 Oct 2026 11:23 by ADMIN

I use the Verdana font in CheckBox items.

In HTML5 and Blazor Report Viewers, the characters like 'p', 'q ', and 'y' appear cut off, just like in this issue:

https://feedback.telerik.com/reporting/1719807-the-text-styled-with-fonts-like-verdana-may-appear-cut-off-in-web-report-viewers

The workaround with top and bottom padding doesn't work for CheckBox, though.

In Development
Last Updated: 27 Oct 2026 14:41 by ADMIN
Please add first-class support for CancellationToken in the ObjectDataSource pipeline.
In Development
Last Updated: 27 Oct 2026 11:02 by ADMIN
Scheduled for 2026 Q4 (Nov)
Created by: Chirag
Comments: 6
Category: Reporting
Type: Feature Request
32
It would be good a maintain the scroll position on the parent page while navigating back from a drill-through report (using the back button of the report viewer) specially if the parent page contains a vertical scrollbar. This would enhance the user experience and eliminate the need to scroll back to the original position.
In Development
Last Updated: 27 Oct 2026 11:00 by ADMIN
Scheduled for 2027 Q1
Created by: Casper
Comments: 9
Category: Reporting
Type: Feature Request
30

It would be great if you could introduce the ability to create custom reusable color palettes in Telerik Report Designer, so I don't have to declare the same set of colors for each chart I need them.

If you have a lot of graphs in your report then it is more convenient to change the color palette one place.

In Development
Last Updated: 26 Oct 2026 09:02 by ADMIN

I use the Verdana font in my report titles. In the desktop designer and PDF documents, the text appears as expected.

In HTML5 and Blazor Report Viewers, though, the characters like 'p', 'q ', and 'y' appear cut off:

 

In Development
Last Updated: 26 Oct 2026 08:52 by ADMIN

I use Zoom in my report definitions, which I edit with the Standalone Report Designers. The TRDP and TRDX reports work fine with Zoom. However, if I save a report with a non-default Zoom (e.g., 4.0) to the new TRDJ format, then I cannot open this report in the designer.

Here is the exception when trying to open the TRDJ report:

System.ArgumentException: Object of type 'System.Double' cannot be converted to type 'System.Single'.
   at System.ComponentModel.ReflectPropertyDescriptor.SetValue(Object component, Object value)
   at Telerik.Reporting.Serialization.ObjectReader.ReadValue(Object obj, PropertyDescriptor prop)
   at Telerik.Reporting.Serialization.ObjectReader.ReadAttributes(Object obj, PropertyDescriptorCollection props)
   at Telerik.Reporting.Serialization.ObjectReader.ReadProperties(Object obj)
   at Telerik.Reporting.Serialization.ObjectReader.ReadObject(Type type)
   at Telerik.Reporting.Serialization.ObjectReader.ReadXmlElement(String name)
   at Telerik.Reporting.JsonSerialization.JsonSerializer.Deserialize(String value, IResourceHandler resourceHandler)
   at Telerik.ReportDesigner.Packages.ReportDesigner.Serialization.JsonDocDataHandler.<>c__DisplayClass8_0.<DeserializeReport>b__0()
   at Telerik.Reporting.Interfaces.IAnalyticsExtensions.UseFeature[T](IAnalytics analytics, Func`1 func, String featureName, String featureCategory, Field[] extraParams)
   at Telerik.ReportDesigner.Packages.ReportDesigner.Serialization.JsonDocDataHandler.DeserializeReport(IDesignerLoaderHost targetHost)
   at Telerik.ReportDesigner.Packages.ReportDesigner.Serialization.ReportDocumentDesignerLoader.PerformLoad(IDesignerSerializationManager serializationManager)

 

In Development
Last Updated: 20 Oct 2026 10:52 by ADMIN
Scheduled for 2026 Q3 (Oct)

The issue is caused by an issue in the SQL DataSource Wizard that doesn't provide the correct Data Provider name. In the wizard on the first page, the Data Provider must be MySql.Data.MySqlClient, but the option is limited only to MySql.Data. Since the engine cannot determine the type of the data provider by that name, it falls back to System.Data.SqlClient and claims that "Port" is not a supported keyword.

The workaround is to avoid using the SQL DataSource wizard and edit the data source properties directly in the properties grid. You can check the attached silent video that demonstrates how to do so.
In Development
Last Updated: 16 Oct 2026 13:19 by ADMIN
Scheduled for 2026 Q4 (Nov)

At the moment it's only possible to have your reports in old-fashioned projects.

It should be possible to add/design reports to SDK-style projects. That should work no matter what target framework is (.NET Core, .NET Standard or .NET Framework).

In Development
Last Updated: 13 Oct 2026 12:55 by ADMIN

 

After upgrading Telerik.ReportViewer.BlazorNative to version 20.2.26.1007, rebuilding a project targeting .NET 9 or later fails with the following error:

Severity Code Description Project File Line Suppression State
Error (active) The asset 'C:\...\BlazorApp1\Debug\net10.0\compressed\14jp1i84hx-{0}-2x8nbomfaf-2x8nbomfaf.gz' can not be found at any of the searched locations 'C:\Users\<user>\.nuget\packages\telerik.reportviewer.blazornative\20.2.26.1007\staticwebassets\css\reporting-blazor-viewer.css.map' and 'C:\Users\<user>\.nuget\packages\telerik.reportviewer.blazornative\20.2.26.1007\staticwebassets\css\reporting-blazor-viewer.css.map'. BlazorApp1 C:\Program Files\dotnet\sdk\10.0.301\Sdks\Microsoft.NET.Sdk.StaticWebAssets\targets\Microsoft.NET.Sdk.StaticWebAssets.Compression.targets 276

-----------------------------------------------------------------------------------

The issue occurs because the NuGet package declares a CSS source map as a static web asset but does not include the corresponding file.

For the available workarounds, refer to the following Knowledge Base article: Missing CSS source map causes build failure in .NET 9 and later with Telerik.ReportViewer.BlazorNative 20.2.26.1007

In Development
Last Updated: 09 Oct 2026 13:42 by ADMIN
Scheduled for 2026 Q4 (Nov)

When a Table has a Group PageBreak that splits the Table into more than one page, the items below the table are rendered after the first part of the Table (after the first page break), rather than under the whole table.

The issue occurs in hard pagination: PrintPreview of the viewers, PDF, etc.

In Development
Last Updated: 09 Oct 2026 13:38 by ADMIN
Scheduled for 2026 Q4 (Nov)

I have a CS report that contains a SubReport with InstanceReportSource. I have it in a .NET 10 Classlibrary project.

I tried to edit this report as a coded report in SRD.NET. However, when I saved the report, in the 'designer.cs' file, the value assigned to the ReportSource of the SubReport was set to 'userreport1' that is not instantiated and throws.

In Development
Last Updated: 09 Oct 2026 13:38 by ADMIN
Scheduled for 2026 Q4 (Nov)
The Group Footer rows of my table are displayed thinner than the rest of the table rows in PDF rendering. However, they are designed the same as the Group Header Rows and the Detail rows.
In Development
Last Updated: 09 Oct 2026 13:35 by ADMIN
Scheduled for 2026 Q4 (Nov)

Currently, when you set SplitWorksheetOnPageBreak to True, the Excel Sheet name is formed from the DocumentName or ReportName and the number of the page.

It would be very helpful if the report authors can manipulate these names with Expressions.

In Development
Last Updated: 09 Oct 2026 10:02 by ADMIN

Currently, when I create a report with the Standalone Designer and localize it, I can preview it only with the language of the machine where I run the designer.

It would be very helpful to have the option to select one of the languages I have set up during localization when previewing.

In Development
Last Updated: 03 Apr 2026 07:22 by ADMIN
When I export a report to MS Word that includes a bullet list and one of the items in the list spans two pages, the item gets two bullets in MS Word: one on the first line of the bullet, which is correct, and on the first line of the bullet that appears on the next page. This second bullet should not appear. The attached screen shot shows what I mean.
In Development
Last Updated: 16 Feb 2026 15:57 by ADMIN
Created by: Chris Trina
Comments: 32
Category: Reporting
Type: Feature Request
81
Our clients enter information using the radeditor and in many cases want to embedded tables and graphics into their text.  Using your reporting tool there is no way to print this information.  I know you have suggested using your table and image tools, but that doesn't work when you are dealing with freely formatted text so the existance and location of the tables and images cannot be predicted.
In Development
Last Updated: 11 Nov 2025 13:45 by ADMIN

The Initialize method in ReportViewer.cs is called from both the OnLoaded and OnApplyTemplate methods, which in turn calls the AttachModelEventHandlers method. This leads to it adding the event handlers to the model twice every time it is loaded. The DetachModelEventHandlers is only called once (in the OnUnloaded method), so if you keep unloading and reloading the control, it adds 2 event handler invocations but removes only one. This means each one is called at least twice (if you have only loaded the control once), then 3, 4, 5, etc times if you keep unloading and reloading it.

I've worked around this by adding code to my wrapper class to prune the duplicated handlers for now, but this needs fixing in the base code.

In Development
Last Updated: 26 Sep 2025 15:09 by ADMIN
Scheduled for 2025 Q4
Consider enabling WPF elements to be uniquely and reliably identified in WPFXAML/WPFXAMLInteractive rendering using properties such as Name, AutomationId, or custom identifiers, to improve support for UI automation, testing, and runtime inspection tools.
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