In Development
Last Updated: 24 May 2024 09:01 by ADMIN
Scheduled for 2024 Q3

When the input data of a pie chart is such that some of the series are insignificant enough not to be drawn on the surface area, a DocumentRenderException with the message "The operation was canceled" is thrown by the Reporting engine.

Enlarging the pie chart or hiding/removing its data point labels clears the error. 

Last Updated: 23 May 2024 16:50 by ADMIN
Scheduled for 2024 Q3

I have projects on .NET Core and I want to use the System.Text.Json serializer that is the new default, but reporting relies on Newtonsoft.Json.



There are two approaches that can be taken right now to solve this:

OPTION 1: define separate endpoints (services, projects) for the different tasks - they can still use the same database layer through a shared project, depending on the architecture you have. This would let you have separated services with the appropriate serializers without custom attributes and code (see below). For example, create a separate project for the reporting REST services.

OPTION 2: add some custom decoration on the endpoints so you can choose which serializer is used on each, you can find some examples here: - the point being to register a serializer depending on the endpoint based on your own code rather than let the framework put one in for all endpoints.

NOTE: This would be a breaking change.


Last Updated: 23 May 2024 08:34 by Martin

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.

Last Updated: 23 May 2024 03:40 by Tony
Created by: Dan
Comments: 5
Type: Feature Request
Please consider adding an RTF Text Box control to your report toolbar.   Crystal reports has this ability which we've used on many of our reports.  Currently the only work around for changing the RTF data to something that Telerik Reports will print cleanly, is to create a user defined custom function.
Last Updated: 22 May 2024 12:56 by ADMIN
Release 2024 R1 PI1

When previewing (in print preview mode) reports that have been rendered on a Report Server instance with the WinForms Report Viewer, the result looks like the screenshot below.

The above is reproducible in the Standalone Report Designer as well because it uses the WinForms Report Viewer internally.

Last Updated: 20 May 2024 08:03 by Steve

The getReportParameters method of the HTML5 Report Viewer omits parameters with unset values that have their AllowNull property set to False.

The reportSource method of the HTML5 Report Viewer can be used as an alternative.

Last Updated: 16 May 2024 08:28 by ADMIN
Release 2024 Q2

Clicking on the Value property of a Report Parameter from the Report Explorer in the .NET Standalone Report Designer throws the following error:

The issue is not present in the Standalone Report Designer for .NET Framework.

Last Updated: 16 May 2024 08:19 by Lars Rikard
Created by: Lars Rikard
Comments: 0
Type: Feature Request

The WPF Report Viewer should support rounded corners.

Currently, I am not allowed to do the following:

<telerikReport:ReportViewer Grid.Row="1"
                            ReportSource="{Binding ReportSource}">
        <Style TargetType="telerikReport:ReportViewer" BasedOn="{StaticResource {x:Type telerikReport:ReportViewer}}">
            <Setter Property="BorderBrush" Value="{telerik:Windows11Resource ResourceKey=PrimaryBorderBrush}"/>
            <Setter Property="BorderThickness" Value="1"/>
            <Setter Property="Margin" Value="5"/>
            <Setter Property="CornerRadius" Value="4"/>

Need More Info
Last Updated: 14 May 2024 08:48 by ADMIN
Created by: Simon
Comments: 2
Type: Feature Request

Good afternoon,

As per support ticket 1650746, could I please request that Telerik reporting could one day work with minimal APIs as opposed to controllers?

There is also the dependency on Newtonsoft for the JSON side of things. Up until trying to implement reporting, I had removed the Newtonsoft nuget package and was trying to use System.Text instead throughout my project. Perhaps in time, it could be a bit more agnostic when it comes to the provider.

Many thanks,


Last Updated: 13 May 2024 07:35 by ADMIN
Scheduled for 2024 Q3

The RTF rendering automatically switches to the Tables rendering mode whenever a Crosstab/Table/List is detected in a report. This rendering mode throws an exception whenever the report contains PictureBox with one of the following sizing options.

  • Center
  • Normal
  • Stretch
  • ScaleProportional

The RTF export should work with all PictureBox sizing options regardless of the rendering mode.

To work around the issue currently, one can either force the rendering engine to use the Frames rendering mode using the RenderingMode device information property or set the Sizing property of all picture boxes in the report to AutoSize.

Last Updated: 10 May 2024 11:59 by ADMIN
Created by: Jai
Comments: 5
Type: Feature Request
If there are parameters which are not mandatory, the reports automatically when loaded. In actual scenarios, there may be a lot of data being processed as the parameters may be empty. Developer should have an option on report level, say, AutoRun as true or false. The developer could decide if report needs to auto run.

Last Updated: 09 May 2024 07:54 by Greg
When exporting a report using the ReportProcessor class, the properties defined in the RuntimeSettings property of the report are disregarded by the Reporting engine.
In Development
Last Updated: 08 May 2024 14:11 by ADMIN
Scheduled for 2024 Q2

My PostgreSQL query contains an Integer parameter. In the Standalone Designer, it executes successfully both in design and in preview.

In the Web Designer, the same report is also previewed successfully. When I try to configure the SqlDataSource though, if I run the Execute Query in the final step, the database returns an error stating '...operator does not exist: integer = text...'

If the parameter is String, the query runs fine in design time of the Web Designer as well.

Last Updated: 07 May 2024 11:34 by David

When a report contains multiple DateTime parameters, the viewer assigns the first value to all of them regardless of their default values or the values passed in the viewer's report source.

Additionally, if one clicks the preview button quickly after changing the value of a DateTime parameter, the old value is passed to the service even though the parameter editor is updated. To avoid this, the user needs to wait a second before previewing.

Last Updated: 07 May 2024 06:54 by ADMIN
As soon as we enable Accessibility, the parameter area will not be displayed anymore. You can reproduce the issue with the Demo Project when using a Custom Parameter Editor.
Last Updated: 03 May 2024 15:28 by Bradley

At the moment, a whole words are removed from text until it becomes short enough to fit in the text box, and this is the only available behaviour.

There should be an option to put ellipsis or clip the text to the textbox width instead (like CSS text-overflow "ellipsis" and "clip").

There's also an older discussion here:

Last Updated: 02 May 2024 12:24 by ADMIN
Created by: Prashant
Comments: 5
Type: Feature Request

we need to have complete End User Tutorial for Web Report Designer, where all the excel like features need to be demonstrated.

including Pivot etc.

Last Updated: 02 May 2024 08:25 by Steve

When testing integer values outside the range of System.Int32 (-2147483648 to 2147483647) for a multi-value integer parameter, I started to get the error:

An error has occurred while processing Report '___':
Cannot perform '=' operation on System.Int32 and System.Int64.

I narrowed this down to the "In" and "Between" operators. For example, the expression evaluating a literal integer value against the multi-value parameter:

= 0 In Parameters.IntegerMultiVal.Value

It appears that the literal integer is being converted, internally, to Int32 and compared against the contents of the multi-value parameter as Int64 - though the error only occurs when a value outside the Int32 range is present.

Direct comparison to a single parameter value outside the Int32 range appears to work fine:
= Parameters.IntegerSingleVal.Value = 0
Additionally, when replacing the literal integer in the expression with a single value parameter set to the same value, it evaluates without error:

= Parameters.ZeroVal.Value In Parameters.IntegerMultiVal.Value

This was tested and reproduced in the HTML5 report viewer and the standalone report editor.

Last Updated: 30 Apr 2024 13:45 by ADMIN
With the standalone desktop designer it would be great to be able to override the version of the report file so that it can be used in dev/test/historical environments where we are still referencing an older version of the Telerik Reports libraries.
In Development
Last Updated: 30 Apr 2024 12:45 by ADMIN
Scheduled for R3 2022

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).

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