Unplanned
Last Updated: 22 Jan 2025 10:38 by Muhammad

Group properties are not visible in the item tree of the Telerik Report Designer for .NET.

Completed
Last Updated: 13 Feb 2025 13:57 by ADMIN
Release 2025 Q1

The report items that have explicitly set background in the report definition are not highlighted by the Search functionality of the viewer when their content matches the search.

Reproducible with Blazor Native Report Viewer.

Partially reproducible with HTML5 Viewer - the highlighted (when selecting the item in the Search list) class is applied but the shaded is not.

The workaround is to use the following styles on the page with the viewer:

<style>
    .trv-report-viewer-wrapper .trv-search-dialog-highlighted-result {
        background-color: rgba(0, 35, 102, 0.3);
        color: #fff;
        background-image: none;
    }

    .trv-report-viewer-wrapper .trv-search-dialog-shaded-result {
        background-color: rgba(255, 140, 0, 0.3);
    }
</style>

Unplanned
Last Updated: 04 Feb 2025 08:20 by Alexander

The Web Report Designer lets the user change the size of a TextBox inside a Table cell from its Properties. The change is also visualized in design time. For example, if the TextBox is enlarged, it sticks outside the table.

The above change is not respected in the preview of the web designer.

I would expect such a resize to be impossible, as in the Standalone Designer; or the entire table column/row to change its size accordingly.

Unplanned
Last Updated: 06 Feb 2025 14:35 by Steve

We use some cascading/dependant parameters and, in some cases, these have their "value" property (initial/default) value unset, generally to prevent the viewer auto-run as well as to give the user a chance to select first.

The dependant parameters have their Value properties set to the ValueMember field(e.g. =Fields.value) so when the cascading parameter is selected, the dependant will have a valid value set.

However, the "missing or invalid parameter" still shows that the dependant parameter has an invalid value.For example:

 

Unplanned
Last Updated: 20 Feb 2025 11:43 by n/a

In some cases, the engine will not render the graph and will instead display the message 

The current NumericalScale settings would result in more than 1000 labels which will make the scale unreadable. Please set the axis/ grid lines visibility to False or change the corresponding property.

The reason to see this or similar messages is that the selected LabelStep, MajorStep, or MinorStep scale property has a value that is too small and the processing engine will violate the previously mentioned constraint numbers.

The issue is fixed by manually correcting the values for those properties but I wish that the automatic configuration would be better.

Unplanned
Last Updated: 24 Feb 2025 09:08 by Damien

Currently, there is design-time support for the WinFoms Report Viewer in the VS Designer only when the project targets .NET Framework.  I need this functionality to be supported in .NET WinForms projects as well.

 
Unplanned
Last Updated: 04 Mar 2025 10:32 by ADMIN
Scheduled for 2025 Q2

I followed the instructions from the Loading .NET 9 assemblies in the Standalone Report Designer for .NET - Telerik Reporting article to use the Standalone Report Designer for .NET with the .NET 9 runtime so that I can load .NET 9 assemblies in it but it crashes on startup:

Completed
Last Updated: 17 Jul 2025 07:51 by ADMIN
Release 2025 Q3
Created by: Ilya
Comments: 0
Category: Reporting
Type: Bug Report
2
Currently, the Web Report Designer uses an old version of jQuery UI - 1.12.1, please update it.
Completed
Last Updated: 23 May 2025 08:03 by ADMIN
Release 2025 Q2
Provide method to add dynamically generated type to the white list of type validator. This prevents type validation from being disabled.
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.
Unplanned
Last Updated: 05 Jun 2025 13:43 by William
I have a report with a textbox that displays a date. The width of the textbox is big enough to fit the date on one line, and it does so with GDI, however, when using Skia graphics engine - part of the text is wrapped on the next line despite there seemingly being enough space to fit the content:



The above image is from testing in HTML5Interactive rendering with Skia on Windows.
Completed
Last Updated: 02 Oct 2025 09:18 by ADMIN
Release 2025 Q3
I have a report viewer, which renders inside a TabStrip. The tab of the viewer is not opened initially, and therefore its container has the CSS style "display: none" set. As a result, if I initialize the viewer before the tab is displayed, and then open the viewer, it appears broken: the report seems to show nothing but I can see that the number of pages changed so if I print preview or save as pdf I see the report there.
Completed
Last Updated: 17 Jul 2025 07:51 by ADMIN
Release 2025 Q3

I have multiline text in a TextBox item that has its Style > TextAlign set to Center.

It is rendered as expected with the GDI+ graphics engine.

When I switch to the Skia graphics engine in the Standalone Designer .NET, though, some lines are not centered correctly in PDF rendering:

In Preview of the designer, with PNG and OpenXML export the text is shown as expected.

Completed
Last Updated: 02 Oct 2025 09:18 by ADMIN
Release 2025 Q3

When the report contains SVG images with Arc segments, the rendering with Skia may result in the following exception:

Telerik.ReportDesigner.Net Error: 0 : System.InvalidOperationException: Invalid image data.
 ---> Telerik.Drawing.Skia.Exceptions.SkiaNotSupportedException: Exception of type 'Telerik.Drawing.Skia.Exceptions.SkiaNotSupportedException' was thrown.
   at Telerik.Drawing.Skia.Drawing2D.GraphicsPath.AddArc(RectangleF rect, Single startAngle, Single sweepAngle)
   at Telerik.Reporting.Svg.SvgRectangle.Path(ISvgRenderer renderer)
   at Telerik.Reporting.Svg.SvgVisualElement.Render(ISvgRenderer renderer, Boolean renderFilter)
   at Telerik.Reporting.Svg.SvgVisualElement.Render(ISvgRenderer renderer)
   at Telerik.Reporting.Svg.SvgRectangle.Render(ISvgRenderer renderer)
   at Telerik.Reporting.Svg.SvgElement.RenderChildren(ISvgRenderer renderer)
   at Telerik.Reporting.Svg.SvgElement.Render(ISvgRenderer renderer)
   at Telerik.Reporting.Svg.SvgFragment.Render(ISvgRenderer renderer)
   at Telerik.Reporting.Svg.SvgDocument.Draw(ISvgRenderer renderer, ISvgBoundable boundable)
   at Telerik.Reporting.Svg.SvgDocument.Draw(Int32 rasterWidth, Int32 rasterHeight)
   at Telerik.Reporting.Processing.Imaging.SvgImageItem.CreateBitmapImage(RadSvgImage svg, Size targetSizePx)
   at Telerik.Reporting.Processing.Imaging.SvgImageItem.DrawImage(RadSvgImage svg, CreateImageContext context)
   at Telerik.Reporting.Processing.Imaging.SvgImageItem.CreateImageCore(CreateImageContext context)
   at Telerik.Reporting.Processing.Imaging.ImageItemBase.CreateImage(CreateImageContext context)

 

Unplanned
Last Updated: 01 Aug 2025 08:11 by Peter

If I set the ReportSource to the Native Blazor Report Viewer using @bind directive, for example:

@bind-ReportSource="@ReportSource"
It works as expected. However, if I try to do it without a binding, for example:

ReportSource="@(new ReportSourceOptions { ... })"

It causes the viewer to go into a loop of trying to set the ReportSource, and it never renders the report.

Unplanned
Last Updated: 24 Nov 2025 14:11 by ADMIN

My use case is a multi-select parameter that is based on a dataset; and the dataset is filtered by 2 other parameters.

The dependent parameter editor is shown as a SpinButton rather than a multi-select editor in the Blazor Native Report Viewer:

Unplanned
Last Updated: 20 Aug 2025 12:38 by Shaik

If I try to drag & drop fields in the Standalone Report Designer for .NET, it does not allow me to paste the field, and the icon changes, indicating that the action is not allowed.

On the other hand, I can drag & drop the fields as expected when using the Standalone Report Designer for .NET Framework.

Unplanned
Last Updated: 25 Aug 2025 07:11 by Flavio

I use the kendovalidator before rendering the report to check the correct parameter of initial and final date.

 

However, the validation fails because additional inputs (for the "Send Email" functionality) are included in the HTML output of the viewer even though I have disabled it.

 

I believe that if the "Send Email" option is disabled the mail data panel should not be created.

Completed
Last Updated: 14 Nov 2025 11:13 by ADMIN
Release 2025 Q4

I am using the new Coded Reports feature in the Standalone Report Designer for .NET, and I have a class library with reports, that depends on another project.

When I try to load a report from the reports class library, I get an error that the dependent project's assembly cannot be loaded despite being present in the report folder's bin directory.

In Development
Last Updated: 13 Nov 2025 14:04 by ADMIN
Scheduled for 2026 Q1

I cannot localize the messages of the Angular and React report viewers using the suggested approaches:

The only alternative is to use the approach from the Localization of the HTML5 ReportViewer Explained - Telerik Reporting article, which I can do only by loading the string resources script in index.html of the SPA.