Unplanned
Last Updated: 03 Jun 2025 08:56 by ADMIN
Created by: Bernd
Comments: 3
Category: Reporting
Type: Feature Request
1

In the Telerik Reporting Designer there are already quite a few Chart Diagrams included but the one that is missing is a Sankey Diagram. This is already integrated in the Charts in KendoReact for example and I would like to request to also add this in Telerik Reporting because I think it would be a great addition and also we would for sure need this.

Thanks,

Regards,

Bernd

Unplanned
Last Updated: 20 May 2025 13:52 by Robert

In the Report Preview of the Web Report Designer, there does not seem to be a way to provide a null value to a nullable data source parameter.

For example, I have a nullable DateTime parameter. After the data source is configured the data source parameter DataType is set to String, it did not resolve to nullable DateTime. Even after I change the data source parameter to DataType of DateTime it cannot accept a null value from a DateTime report parameter, it seems to be interpreted as a string instead of null.

In the Standalone Report Designer there is no problem having a DateTime report parameter passing null to a nullable DateTime data source parameter; after reconfiguring the data source in the Standalone Report Designer the DataType for the data source parameter is <DataType>System.Nullable`1[System.DateTime]</DataType> instead of <DataType>System.DateTime</DataType> as from the Web Report Designer.

Unplanned
Last Updated: 19 May 2025 11:20 by Erin
Hi, 

Whenever we start our application we're getting the following warning.

WARNING in ./node_modules/@progress/telerik-react-report-viewer/dist/dependencies/telerikReportViewer.kendo.min.js
Module Warning (from ./node_modules/source-map-loader/dist/cjs.js):
Failed to parse source map from 'xxx\node_modules\@progress\telerik-react-report-viewer\dist\dependencies\kendo.custom.min.js.map' file: Error: ENOENT: no such file or directory, open 'xxx\node_modules\@progress\telerik-react-report-viewer\dist\dependencies\kendo.custom.min.js.map'

webpack compiled with 1 warning
Unplanned
Last Updated: 14 May 2025 08:30 by Broderick

The PDF with enabled Accessibility looks fine in the Adobe PDF reader.

However, when I check it with the PAC tool, it shows in the logical structure the Detail section first, then the Page Header, and then the Page Footer.

Completed
Last Updated: 17 Jul 2025 07:51 by ADMIN
Release 2025 Q3

The data member list in "Choose a data member" (step 2) of the objectDataSource wizard in the Web Report Designer does not appear to be in alphabetical order as it is in the Standalone Report Designer.

When there are many data members it is hard to pick the one you want when not ordered alphabetically.

Unplanned
Last Updated: 13 May 2025 14:24 by Robert

In the Web Report Designer's objectDataSource wizard, once the "Preview data source results" (step 4) are ready and the Finish button is clicked, there is another call to the data source member but instead of using the Design-Time Values for the member, the values in the Value column appear to be used.

For example, If report parameters are already assigned to the data source parameters the string of the Value (e.g. "= Parameters.StartDate.Value") is used instead of the actual report parameter value.  I think the data member call to generate the data schema should be the Design-Time Values again. In order to get the data schema generated I had to use the same values for Value column as in the Design-Time Values value.

After the data source parameters are assigned to report parameters then it breaks the generation of the data schema later when the report is opened again in the Web Report Designer and there is an error (e.g. Error An error occurred while loading the data schema for "Widgets". ("Message"."String was not recognized as a valid DateTime.").

Unplanned
Last Updated: 13 May 2025 14:21 by Robert

 I cannot create a Report Parameter with the same name as a data source parameter or CSV data source field. Trying to do so results in an error messagе

(Error Could not change property 'Name'. Name 'FromEffectiveDate' already exists).

This issue can be demonstrated in the Web Report Designer Demo page: create a parameter for the yearDataSource data source, try to create a report parameter with the same name to get the error.

Using report parameter names that are also data source parameter names works fine in the Standalone Report Designer.

Unplanned
Last Updated: 12 May 2025 07:59 by Patrick

I have the chance to use a 27", 5120 x 2880 monitor, with text on Windows set to 200%.

The problem with Telerik Report Designer is that the icons in the report designer are very small and barely usable:

- Panel icon to move it.
- Table icon to move it.
- The open / close icons in the Report Explorer.

Also the zoom indicator at the bottom left of the screen, where the text part is too small to display the current zoom.

Unplanned
Last Updated: 01 Oct 2025 13:09 by ADMIN

Steps To Reproduce:

  1. Install Reporting.
  2. Go to \Tools folder.
  3. Start DatabaseCacheConfigurator.exe
  4. Leave the first combobox to 'Create engine viewers/cache database'
  5. Paste a valid connection string in the textbox below, e.g. Data Source=.\sqlexpress;Initial Catalog=AdventureWorks;Integrated Security=True
  6. Click on Create Schema or Clear Cache Data.

Expected behavior: The function is executed

Actual behavior: A message saying "Operation could destabilize the runtime." is shown.

Under Review
Last Updated: 20 May 2025 13:53 by ADMIN
I am encountering issues when using the objectDataSource wizard in the Web Report Designer that are not issues with the Standalone Report Designer. The Telerik Reporting version is 19.0.25.313. I created an object data source class that returns "Widgets" in a DataSet and a report "Demonstrate objectDataSource issues in Web Report Designer.trdx" to demonstrate the issues.

1. The data member list in "Choose a data member" (step 2) of the objectDataSource wizard in the Web Report Designer does not appear to be in alphabetical order as it is in the Standalone Report Designer. When there are many data members it is hard to pick the one you want when not ordered alphabetically.

2. For a data member that returns a DataSet result, a table row has to be returned for the design time feature to generate a data schema. In the Standalone Report Designer a returned row is not necessary, all that is required is a returned DataSet with a Table with Columns setup. It would be easier when using Web Report Designer to not require data returned to establish the data source data schema. In the WidgetDataSource a fake row is returned for the sake of having the data schema generated.

3. In the Web Report Designer objectDataSource wizard, once the "Preview data source results" (step 4) are ready and the Finish button is clicked, there is another call to the data source member but instead of using the Design-Time Values for the member, the values in the Value column appear to be used. If report parameters are already assigned to the data source parameters the string of the Value (e.g. "= Parameters.StartDate.Value") is used instead of the report parameter value. I think the data member call to generate the data schema should be the Design-Time Values again. In order to get the data schema generated I had to use the same values for Value column as in the Design-Time Values value. After the data source parameters are assigned to report parameters then it breaks the generation of the data schema later when the report is opened again in the Web Report Designer and there is an error (e.g. Error An error occurred while loading the data schema for "Widgets". ("Message"."String was not recognized as a valid DateTime.").

4. In the Report Previewer for the Web Report Designer there does not seem to be a way to provide a null value to a nullable data source parameter. For the GetWidgets member the FromEffectiveDate parameter is a nullable DateTime. After the data source is configured the data source parameter DataType is set to String, it did not resolve to nullable DateTime. Even after I change the data source FromEffectiveDate parameter to DataType of DateTime it cannot accept a null value from a DateTime report parameter, it seems to be interpreted as string instead of null. In the Standalone Report Designer there is no problem having a DateTime report parameter passing null to a nullable DateTime data source parameter; after reconfiguring the data source in the Standalone Report Designer the DataType for the data source parameter is <DataType>System.Nullable`1[System.DateTime]</DataType> instead of <DataType>System.DateTime</DataType> as from the Web Report Designer.

5. This is not a specific objectDataSource wizard issue but rather a general issue in the Web Report Designer. I cannot create a Report Parameter with the same name as a data source parameter or CSV data source field. Trying to do so results in an error message (Error Could not change property 'Name'. Name 'FromEffectiveDate' already exists). This issue can be demonstrated in the Web Report Designer Demo page: create a parameter for the yearDataSource data source, try to create a report parameter with the same name to get the error. Using report parameter names that are also data source parameter names works fine in the Standalone Report Designer.
Duplicated
Last Updated: 12 May 2025 08:47 by ADMIN
Created by: Francis
Comments: 1
Category: Reporting
Type: Bug Report
0

Hi,

In Desktop Designer, I create a very simple Report with :

  • a JSON datasource mapped to the report
  • a Table with two colunms

I want to duplicate this table, so I select it and do a copy. After that, I select the detailSection and do a paste. The pasted table, in the Report Explorer look fine, but in the designer view it is not the case. And if I compare the TRDX files, an entire section is missing (the <Cells> section).

Attached files :

  • Multi-zone.trdx : Before copy/paste
  • Multi-zone-2.trdx : After copy/paste
  • Screenshot.png : screenshot of the Designer where you can see the two tables and the Report Explorer

Thank you

PS: In additional informations, I specify ASP.NET MVC as Project Type, but it is not relevant.

Unplanned
Last Updated: 02 May 2025 11:58 by Tim

When using a date parameter with AutoRefresh set to True in the Standalone Report Designer, selecting a new value from the date picker does not automatically refresh the report viewer to show the updated report. To make the new value take effect, you need to move the focus away from the date picker.

 

Unplanned
Last Updated: 02 May 2025 08:01 by Simon

When upgrading my .NET Framework project with the Upgrade Wizard, the Telerik.Reporting.OpenXmlRendering assemblies, including the newer 2.7.2 and 3.0.1 ones, are not upgraded

All assembly references except Telerik.Reporting.OpenXmlRendering ones are updated. The upgrade wizard finishes without errors.

Image

This is very annoying as I have to replace them manually,

Unplanned
Last Updated: 29 Apr 2025 14:18 by James Glinsek

When I export my report in Excel with the Standalone Report Designer for .NET,  the GDI engine produces the expected result, whereas with the Skia graphics engine, the Graph in the report is rendered with a bold font, although I use a regular/normal font.

Need More Info
Last Updated: 13 May 2025 08:07 by ADMIN
Created by: Stephan
Comments: 3
Category: Reporting
Type: Bug Report
1

Hello,

the search results in a PDF generated with report is not correct. Again...

Please fix this bug and add this scenario to your tests.

 

Steps: Search for a text in a pdf.

Unplanned
Last Updated: 24 Apr 2025 09:28 by EK
Created by: EK
Comments: 0
Category: Reporting
Type: Feature Request
1
I want to be able to have more pointers in the same Gauge Report as in Kendo UI for jQuery Radial Gauge - Telerik Web Forms Gauge Functionality Multiple Pointers - Telerik UI for ASP.NET AJAX
Unplanned
Last Updated: 30 Apr 2025 15:11 by ADMIN
Hello Telerik Team,

Hello Telerik Team,

I would like to suggest a feature enhancement for the Web Report Designer that would allow dynamic configuration of design-time parameter values during initialization.

Currently, design-time values for report parameters are embedded within the report definition and can only be set manually using the Web Report Designer interface. While runtime parameter values work perfectly and can be passed dynamically through code, not being able to dynamically set design-time values causes significant limitations—especially during the report design process.

My Use Case:

In my application, I load data from a dynamic web service endpoint, and the service domain needs to be set at runtime. While this works fine during preview in my ASP.NET MVC project (where I pass the URL dynamically using report parameters), I run into issues when designing reports:

  • During design time, the URL has to be manually entered into every Web Service Data Source just to fetch the model fields and avoid errors.

  • If the domain name changes (e.g., due to staging/production environments), I must manually update the domain in every report and each Web Service Data Source, which is both time-consuming and inefficient.

  • This becomes even more tedious in large projects with many reports and data sources.

So, my question is: Is it mandatory to pass design-time values (like the service URL) manually just for design-time purposes? If not, it would be incredibly helpful to have a way to supply these values dynamically during the Web Report Designer initialization, perhaps via a configuration option or external context.

Petar from the Telerik team mentioned that this would indeed be a valuable feature and encouraged me to submit this suggestion. You can view our discussion here: 🔗 Dynamic Web Service Domain Configuration in Telerik Report Designer Server

This capability would make designing reports much smoother and far more maintainable, especially for applications that rely on dynamic, environment-specific configurations.

Thank you for considering this request, and I appreciate your continued support and guidance.

Screenshots are also attached for quick reference, though they are already available in the forum link above.

Best regards,
Prabesh

Unplanned
Last Updated: 07 Nov 2025 09:56 by ADMIN
Scheduled for 2025 Q3

Currently, when using External Stylesheets in the reports, the engine tries to first load the stylesheet as an embedded resource of the assembly. If it fails to load it from the assembly, a message is written to the trace along the lines of:

ESS: Attempt to load ExternalStyleSheet from EmbeddedResource from assembly Telerik.Reporting, Version=19.0.25.211 with resource name styles.xml is unsuccessful.

After this, the engine will try other ways to resolve the stylesheet such as from URI and if it succeeds, the report will render as expected.

This can create confusion because looking at the trace, one might think that there were errors with the rendering of the report because the stylesheet did not load but it was actually successfully loaded with one of the other approaches.

It would be better to write the errors to the trace only if the stylesheet does not load after all attempts.

 

Unplanned
Last Updated: 16 Apr 2025 13:27 by Martin

To reproduce, use online web designer demos with Employee Sales Summary.trdx report.

Check the video https://go.screenpal.com/watch/cTfDlNnj4I1.

  1. The main report opened in the designer has a Navigate to Report action.
  2. Preview the report and trigger the action to open the second report.
  3. Now, click on Design to go back to design time.

Expected: opens the main report

Observed: In design you see the second report

Additionally, the URL to the second report is absolute rather than relative path - the issue logged in Full system-path being used by REST Service as reference when linked by a 'Navigate To Report' action

Unplanned
Last Updated: 09 Apr 2025 09:27 by ADMIN
1. Toolbar Button Events: Request EventCallback properties for the toolbar buttons, much like OnRenderingBegin and OnRenderingEnd. The event(s) should be fired when the respective toolbar button is clicked. At a bare minimum, request that the 'Stop Rendering' (Cancel) button fire its own event (OnRenderingCancel) or at least fire the existing OnRenderingEnd.

2. Toolbar Button Properties: Along with this, since IReportViewerTool exposes the Icon and CommandName, request it also expose an Enabled property. At a bare minimum, it would be helpful if, while rendering, all but the 'Stop Rendering' (Cancel) and Pager buttons are disabled by default or by setting a new viewer property.

Currently we must use JSInterop to accomplish these things.

The reason we are managing these things in the first place is because we are using Custom Parameter Editors (CPEs). When a long-running report is in the process of rendering, and a user changes a parameter and re-requests the report (either via our 'Retrieve' button or a viewer toolbar button), an unhandled exception occurs in _content/Telerik.ReportViewer.BlazorNative/js/reporting-blazor-viewer.js. So we make use of the OnRenderingBegin and OnRenderingEnd events to disable/enable the CPEs. The problem arises when the 'Stop Rendering' (Cancel) button is clicked. Since we cannot detect the button click, our CPEs remain disabled.