Under Review
Last Updated: 01 Apr 2024 09:46 by ADMIN

Currently the Webdesigner makes up to 6(?) and the Standalone Designer as much as it needs without(?) limit.

Especially the latter case can quickly lead to a lot of connections, saturating the max allowed connections of a sql server, which also leads to other services depending on a sql server connection to fail.

As far as I've seen, this only happens with Charts in Design mode.

So there are multiple ways to handle this:

  • Being able to specify the max concurrent connections in the designer
  • Make the usage of the DataSource more efficient by only loading the data once (like in the report viewer)
  • Being able to turn off the chart preview in the Designer (By configuration, not with a user settable option)

See the attached report for a simple example:

It contains a single Datasource, which is a postgres query which simply waits 10s before returning the result.
After updating the DataSource to something which works for you and saving, simply reopen the report and see how many connections are opened in parallel.

With kind regards
Dominik Rothert

Under Review
Last Updated: 27 Dec 2023 09:46 by ADMIN
When a Report Parameter is send via REST or the CreateDocument, and there is a list of values defined in the Report, if the Value isn't found in the list (case matching) a message like "parameter doesn't exist in the list content" (or something similar) would be much more helpful than the same "missing or invalid parameter" that is returned when indeed, a parameter that is required was not passed in.
Under Review
Last Updated: 16 Oct 2023 08:46 by ADMIN
Created by: NPL IT
Comments: 1
Type: Feature Request
When you preview a Telerik report the report automatically saves.  Unlike Visual Studio, PowerPivot, SSRS, etc.. a preview in Telerik reporting overwrites your vetted production report with all uncommitted changes.  This has cost us significant time and headaches.  There are very good reasons every other piece of software in the world decouples preview from save.  Is there any reason Telerik reporting behaves in a way that makes it easier than other software products to commit flawed changes to production files?
Under Review
Last Updated: 09 Aug 2022 14:24 by ADMIN
Created by: Stewart
Comments: 1
Type: Feature Request

I am currently investigating including the Telerik Reports in our products but when I load the Web Report Designer it loads a theme which is overwriting our custom theme. 

Is there any way to prevent this so that we keep our custom theme?

Under Review
Last Updated: 08 Jun 2022 08:05 by ADMIN
Created by: Patrick
Comments: 1
Type: Feature Request


It would be necessary to have a way to export a sub-report to a trdx file with the designer. Also, the same tool could be used to import a sub-report into an XML source. Currently, it takes a lot of acrobatics to be able to do this work.

Thank you for your help!

Under Review
Last Updated: 06 Apr 2022 10:34 by ADMIN

Please add DropDownTree and/or TreeView as single- and multi-value parameter editors to accommodate Hierarchical data. It would be nice to have them out-of-the-box when available values come from a hierarchical/self-referencing table(s), but I would be happy if they could be integrated as Custom Parameter Editors. I was able to render and populate the dropdowntree with checkboxes, pass the correct selected values, but the 'Preview' button would never enable upon selection. Also, the dropdowntree's AutoClose(false) was not recognized. I know this can be achieved outside of the report viewer, but sometimes that method disrupts the layout and flow of the reporting view.


Under Review
Last Updated: 23 Jul 2021 11:52 by ADMIN

I would like to be able to access the report template layout using the ref so that I can save the report template outside of the designer.  Similar to this:


<button type="button"class="btn btn-light btn-sm" @onclick="Save">Save</button> <WebReportDesigner @ref="designer1" DesignerId="wrd1" ServiceUrl="/api/reportdesigner" Report="Dashboard.trdp" ToolboxArea="new ToolboxAreaOptions() { Layout = ToolboxAreaLayout.Grid }" PropertiesArea="new PropertiesAreaOptions() { Layout = PropertiesAreaLayout.Categorized }" /> @code { WebReportDesigner designer1; void Test() { var layout = (byte)designer1.Report.Layout;

} }

Under Review
Last Updated: 05 May 2021 11:43 by ADMIN
Created by: Yudith
Comments: 1
Type: Feature Request

Hi Telerik Team,


I am using telerik reporting watermark to put some "design" in our report template for all the pages, but a small image with a size of 50kb as watermark generates additional 200-300MB of memory usage during the rendering of the report.


Please reduce the memory consumption since this behavior limits the number of user that can access the report simultaneously



Under Review
Last Updated: 29 Apr 2021 10:59 by ADMIN

Dear Telerik,

We use Azure App Services to host the reporting engine API.

Azure App Services validate all incoming requests to ensure they come in with valid Bearer JWT tokens. Your suggested workaround of validating the tokens only on some requests in the application would require us to turn off built-in Azure validation, which elevates security risks.

Can you please ensure [authenticationToken] is added to ALL requests from the Angular tr-viewer to the API, not just some requests?

Please redesign the viewer to authenticate all its requests to the backend service. Including but not limited to the requests report viewer makes to download generated report documents as attachments by performing get document requests through window.open() or any other methods.

We appreciate your efforts to obfuscate such requests; however, these efforts need to be in addition and not instead of industry standard security practices.

Thank you very much,

Sergey Nosov
Sr. Integrator/Developer,
Calpine Energy Solutions

Under Review
Last Updated: 26 Mar 2021 16:36 by ADMIN
I have a requirement for my report book to feature a title page and *THEN* a table of contents for the report book, followed by the report book's content. Currently, the TOC for a report book can only go at the beginning or the end of the book. My requirement required the ability to specify the TOC position more generally.
Here are two possible approaches:

1. Implement the requirement as it is stated by allowing the report book's TOC to be positioned after such and such a report - the nth, or some other means of identification.
2. Honour the TOC for a report book that is nested inside another. I created a 'sub book' with the TOC as its first page and then added this an outer book. Unfortunately, the inner book's TOC was not honoured and the report was skipped.

To my mind, the second suggestion above feels easier to implement (but I am guessing, of course). It certainly would allow just about any combination.
Under Review
Last Updated: 16 Jul 2020 11:59 by ADMIN
Created by: Eli
Comments: 17
Type: Feature Request
We display data inside an HtmlTextBox that was entered using the RadEditor.  It would be great if the Reporting HtmlTextBox could be brought much closer or even in line with tag support as the editor.  We are frequently running into issues with uncommon tags (that we strip out for the HtmlTextBox) and also with spacing being different.  We work around the issues we have, but continuing increased tag support or auto stripping of unsupported tags would be very appreciated.
Under Review
Last Updated: 01 Jul 2020 08:57 by ADMIN
Created by: Pete
Comments: 2
Type: Feature Request

The Telerik.ReportViewer.Wpf NuGet package does not contain all the dependent UI for WPF assemblies. I cannot use the UI for WPF NuGet packages without also having a license.

It would be nice if the WPF Report Viewer NuGet package included all the dependent UI for WPF assemblies.

Under Review
Last Updated: 10 Mar 2019 23:39 by ADMIN
Created by: Pete
Comments: 1
Type: Feature Request
After setting the Margins under the Page Settings, the Width should be automatically set.
The Width should be the Paper Width with the Left and Right Margins subtracted.
What happens when this 'formula' is not used, which one takes precedence?

It would also be nice to display the Height as a read only property.
Under Review
Last Updated: 31 Oct 2016 11:49 by ADMIN
As the world of data visualization changes and the demands for features to the end-users allowing them to use visualisation methods such as dashboards and pivots allowing them to slice and dice runtime. 
Are there anything in the telerik roadmap which allows for this kind of product component?

I see that competitors such as ComponentOne has Active analytics and Devexpress has dashboraddesigner and dashboardviwer as components in their toolbox.

If anyone else are seeking the same oppertunity in the Telerik toolbox please feel free to comment.

I am not really convinced this belongs in the reporting tool but as this was suggested by the team - so be it.

What I am looking for is an end-user friendly way of visualising data without being knowledgeable of how to connect to databases and how to look for the right tables, but simply choosing pre populated "datasets" for presenting as
- Charts
- Gauges
- Pivot tables
- slice & dice
- compare data based on easy selection of
   - date ranges 
   - geografical presence

So basically a dashboard designer allowing end user to Do Your Own.

Thanks in advance for considering the suggestion
Under Review
Last Updated: 13 Sep 2016 10:48 by Nicholas
Created by: Nicholas
Comments: 0
Type: Feature Request
I like how with Kendo UI for MVC you have the option of placing the references dlls into lib/kendouimvc, so projects are not dependent on having the correct version installed (or having the telerik control panel installed on a build server), and when updates occur it will copy over everything and make sure you don't miss something. 

It would be nice to have an option in the upgrade wizard extension thingy to have a section for including telerik reporting and it will put the necessary dlls in your project the same way.

I can easily manually copy the files over, so this is just a pet peave thing, but it would be nice...
Under Review
Last Updated: 13 Jun 2014 10:34 by ADMIN
Created by: Kevin
Comments: 3
Type: Feature Request
We have developed additional logic around the Telerik Reporting Engine so I don't know if this would be valuable to anyone else or not but I would love to have the ability to associate custom properties to a control.  

The use case that comes to mind most is the logic we have implemented to auto size text that displays on a report to fit in the area provided.  We use a control naming scheme to determine what controls should be auto sized and how they should be sized in relation to other parts of the report.  It is typically assigned used with a Panel, a TextBox, or an HTMLTextBox.

I would love to have the ability to add two associate two additional properties to these controls that could be used in the stand alone designer to allow users to set an AutoSize (true / false) and a SizingGroup (string) property on these controls rather than worry about making sure the control is named properly.  I would allow users to more easily leverage this functionality.

I realize that it is unlikely that this will be implemented since it wouldn't be widely used but I like to dream.