Under Review
Last Updated: 16 May 2022 12:23 by ADMIN
Created by: Patrick
Comments: 1
Type: Feature Request


It could be userfull to have a way to dynamically prompt for user name and password for the database connection. The proposed solution to put the connection string in a report parameter exposes sensitive information. It could be an option in the "Configure SQL Data Source" where we could set a checkbox as "Prompt for user name and password". At the end, everything would be saved with the report definition except the user name and password. On the report rendering, the user name and password will raised a dialog box for user name and password for the report.



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: 04 Feb 2022 09:39 by ADMIN
Unable to get report parameters.
An error has occurred.
Type: Telerik.Reporting.ReportSerialization.Current.ReportSerializable`1[Telerik.Reporting.Report]
Under Review
Last Updated: 09 Dec 2021 08:38 by ADMIN
Created by: Cedric
Comments: 1
Type: Bug Report

I am using the stand alone report designer, connected to a report server.
In the report I am designing, I have several cross tabs. We now want to create the same crosstabs, with additional filtering for the data.

- I copy the existing crosstab, then paste it.

Both cross tabs now reference the SAME row groups. Because of this, when I edit the filters, it just doesn't work. Looks like there are reference issues when the copy / paste is done, not all the objects within the cross tab are getting a new copy.


Original crosstab - it has a row group called "groupName1" :


Copied crosstab - same "groupName1" row group - it shouldn't be the same row group object.

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: 28 Jun 2021 09:10 by ADMIN
Created by: Frantisek
Comments: 11
Type: Bug Report



I have problem with visual studio auto close when I'm working in reporting designer.

When I'm working in reporting designer and do about 5 changes, Visual studio freezes and after few monents is restarted and I loose all my work.

It is really frequented problem and I can hardly work with reporting designer.


In Windows Event Viewer I everytime find this exception that referes to problem in GetAggregateFunctions().

Application: devenv.exe
Framework Version: v4.0.30319
Description: The process was terminated due to an unhandled exception.
Exception Info: System.NullReferenceException

Server stack trace: 
   at Telerik.Reporting.Processing.AggregateFunctionHelper.GetAggregateFunctions(IServiceProvider provider)
   at Telerik.Reporting.Design.Common.ExpressionBuilder.CategoryAdapter.<GetAggregates>d__1b.MoveNext()
   at System.Collections.Generic.List`1..ctor(IEnumerable`1 collection)
   at Telerik.Reporting.Design.Common.ExpressionBuilder.CategoryAdapter.FillAggregates(Category funcCategory, IServiceProvider provider)
   at Telerik.Reporting.Design.Common.ExpressionBuilder.CategoryAdapter.CreateHierarchy(IServiceProvider provider, Boolean isFieldsTreeVisible)
   at Telerik.Reporting.Design.Common.ExpressionBuilder.ExpressionBuilderDialog.LoadCategories(IServiceProvider provider)
   at System.Runtime.Remoting.Messaging.StackBuilderSink._PrivateProcessMessage(IntPtr md, Object[] args, Object server, Object[]& outArgs)
   at System.Runtime.Remoting.Messaging.StackBuilderSink.AsyncProcessMessage(IMessage msg, IMessageSink replySink)
   at System.Runtime.Remoting.Proxies.RealProxy.EndInvokeHelper(System.Runtime.Remoting.Messaging.Message, Boolean)
   at System.Runtime.Remoting.Proxies.RemotingProxy.Invoke(System.Object, System.Runtime.Remoting.Proxies.MessageData ByRef)
   at Telerik.Reporting.Design.Common.ExpressionBuilder.ExpressionBuilderDialog+LoadCategoriesDelegate.EndInvoke(System.IAsyncResult)
   at Telerik.Reporting.Design.Common.ExpressionBuilder.ExpressionBuilderDialog.OnLoadCategoriesComplete(System.IAsyncResult)
   at System.Runtime.Remoting.Messaging.AsyncResult.SyncProcessMessage(System.Runtime.Remoting.Messaging.IMessage)
   at System.Runtime.Remoting.Messaging.StackBuilderSink.AsyncProcessMessage(System.Runtime.Remoting.Messaging.IMessage, System.Runtime.Remoting.Messaging.IMessageSink)
   at System.Runtime.Remoting.Proxies.AgileAsyncWorkerItem.DoAsyncCall()
   at System.Runtime.Remoting.Proxies.AgileAsyncWorkerItem.ThreadPoolCallBack(System.Object)
   at System.Threading.QueueUserWorkItemCallback.WaitCallback_Context(System.Object)
   at System.Threading.ExecutionContext.RunInternal(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
   at System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
   at System.Threading.QueueUserWorkItemCallback.System.Threading.IThreadPoolWorkItem.ExecuteWorkItem()
   at System.Threading.ThreadPoolWorkQueue.Dispatch()
   at System.Threading._ThreadPoolWaitCallback.PerformWaitCallback()

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: 18 Feb 2021 10:31 by ADMIN
after report viewer load , picture box is giving error internal server error .

i figure out the issue that my api is crash due to header is missing in this url .

kindly suggest me what should i do to resolve this issue  , how to add header in giving api 


Under Review
Last Updated: 17 Feb 2021 13:38 by ADMIN

I am currently using Reporting
The following error occurred while using Reporting.

'Non-Error promise rejection captured with value: Error shown. Throwing promises chain stop error.'

I looked up the cause of this error, and I was able to confirm the following article.


As explained in the above article, the error in Report Server ( has been corrected to appear to be a significant error.

So I looked up the release note to see if this error was fixed in the Reporting product, but I couldn't find any related information.

Is this error corrected on the Report Server only and not corrected in Reporting? If so, when can it be revised?

Under Review
Last Updated: 03 Dec 2020 09:56 by ADMIN
Created by: Heiko
Comments: 1
Type: Bug Report

The SearchDialog is placed based upon a parent window of type "Window". However, when I use other types like "RadRibbonWindow" as my main window the placement does not work correct. As a result the SearchDialog is shown in the upper right corner of the desktop. This is the code (in SearchDialogController.cs):

        Window GetParentWindow()
            return (this.model.PageScrollViewer == null)
                ? null
                : this.model.PageScrollViewer.FirstParentOfType<Window>();

At least this method should also take RadRibbonWindow in account (this is certainly not used that rarely since we all use Telerik components!) or for a more generic solution look for types that are derived from Window.

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: 10 Jul 2020 06:16 by ADMIN
I am using a Table in the Details section of the Report. When having multiple (2) Cells selected and then clicking on the 3-dots-Button at backgroundimage->imagedata in the properties inspector the IDE freezes for a very long time (more than a minute). 
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: 30 Jun 2020 13:26 by ADMIN
When i use "MultiSelectEditor" with parameters that have MultiValue set to true and have provided AvailableValues, it doesn't handle them. Only when i use those parameters with "MultiValueEditor" then it handles them even though "MultiValueEditor" is used with parameters that have not provided AvailableValues.
Under Review
Last Updated: 05 Jun 2020 08:10 by ADMIN

When the Report is shown in the HTML5 Interactive viewer, you can move the mouse over the cells in the Hyperlink column. When a cell has the mouse cursor hovering over it, a gray border is drawn around the cell.

The problem is that this gray border is partially covered by the Background color of the next cell.

Under Review
Last Updated: 09 Mar 2020 15:56 by ADMIN
ObjectDataSource with parameters of types Object[], String, and DateTime throws an exception in Report Designer Data Explorer. The error states that 'Member GetMissingSwipes(System.String filePath) on type GroupDataTable not found.' although the data source is configured to utilize a method with the same name with three parameters.
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
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