Completed
Last Updated: 10 Jul 2024 11:52 by ADMIN
Release 2024 Q2
I have a problem with the current version in a Linux container using 2024.1.30 and 18.0.24.305 version of reporting. I only get this when I'm attempting to produce multiple reports at the same time.  It's the same issue regardless of whether it's running as a hosted web service or if I'm running as a server based blazor app.

DockerBlazorApp Error: 0 : An error has occurred while rendering the report: System.InvalidOperationException: Operations that change non-concurrent collections must have exclusive access. A concurrent update was performed on this collection and corrupted its state. The collection's state is no longer correct.
   at System.Collections.Generic.Dictionary`2.TryInsert(TKey key, TValue value, InsertionBehavior behavior)
   at System.Collections.Generic.Dictionary`2.set_Item(TKey key, TValue value)
   at Telerik.Drawing.SKIA.Text.FontMapper.LoadPrivateFont(SKTypeface typeface, String familyName)
   at Telerik.Drawing.Skia.Graphics.MeasureTextBlock(String text, Single widthConstraint, Single heightConstraint, StringFormatBase stringFormat, IFont font)
   at Telerik.Drawing.Skia.Graphics.MeasureString(String text, IFont font, SizeF layoutArea, StringFormatBase stringFormat, Int32& charactersFitted, Int32& linesFilled)
   at Telerik.Reporting.Processing.WindowsTextMeasureProvider.MeasureString(IGraphics graphics, String text, GdiFontInfo fontInfo, SizeF layoutArea, StringFormatBase stringFormat, Int32& charactersFitted, Int32& linesFilled)
   at Telerik.Reporting.Processing.MeasureContext.MeasureString(String text, IFont font, SizeF layoutArea, TextFormat textFormat, Int32& charactersFitted, Int32& linesFilled)
   at Telerik.Reporting.Processing.TextRenderer.MeasureText(IMeasureContext context, String text, IFont font, RectangleF layoutRectangle, TextFormat textFormat, Boolean multiline, Int32& charactersFitted)
   at Telerik.Reporting.Processing.TextBoxUtil.MeasureTextContainer(ITextContainer textContainer, RectangleF layoutBounds, IMeasureContext context)
   at Telerik.Reporting.Processing.TextBox.MeasureItem(IMeasureContext context, SizeLU availableClientSize, Boolean canGrow)
   at Telerik.Reporting.Processing.TextBox.MeasureItem(IMeasureContext context, SizeLU availableClientSize)
   at Telerik.Reporting.Processing.TextBox.MeasureContent(IMeasureContext context, SizeLU availableClientSize)
   at Telerik.Reporting.Processing.LayoutElement.MeasureCore(IMeasureContext context, SizeLU availableSize)
   at Telerik.Reporting.Processing.VisualElement.MeasureCore(IMeasureContext context, SizeLU availableSize)
   at Telerik.Reporting.Processing.ProcessingElement.MeasureCore(IMeasureContext context, SizeLU availableSize)
   at Telerik.Reporting.Processing.LayoutElement.Measure(IMeasureContext context, SizeLU availableSize)
   at Telerik.Reporting.Processing.AbsolutePositionLayout.MeasureChildItems(IMeasureContext context, SizeLU availableClientSize)
   at Telerik.Reporting.Processing.AbsolutePositionLayout.MeasureContent(IMeasureContext context, SizeLU availableClientSize)
   at Telerik.Reporting.Processing.ReportSectionBase.MeasureContent(IMeasureContext context, SizeLU availableClientSize)
   at Telerik.Reporting.Processing.PageSection.MeasureContent(IMeasureContext context, SizeLU availableClientSize)
   at Telerik.Reporting.Processing.LayoutElement.MeasureCore(IMeasureContext context, SizeLU availableSize)
   at Telerik.Reporting.Processing.VisualElement.MeasureCore(IMeasureContext context, SizeLU availableSize)
   at Telerik.Reporting.Processing.ProcessingElement.MeasureCore(IMeasureContext context, SizeLU availableSize)
   at Telerik.Reporting.Processing.LayoutElement.Measure(IMeasureContext context, SizeLU availableSize)
   at Telerik.Reporting.Paging.PageCompositionBase.MeasurePageSection(PageSection section)
   at Telerik.Reporting.Paging.PageCompositionBase.ProcessPageSectionsForPaging()
   at Telerik.Reporting.Paging.PageCompositionBase.MoveToNextPageArea()
   at Telerik.Reporting.Paging.PageCompositionBase.NextVerticalPage()
   at Telerik.Reporting.Paging.PageCompositionBase.CreatePages()
   at Telerik.Reporting.Paging.PagerBase.Telerik.Reporting.Paging.IPager.CreatePages(IPageHandler handler, LayoutElement root)
   at Telerik.Reporting.BaseRendering.RenderingExtensionBase.Render(LayoutElement root, Hashtable renderingContext, Hashtable deviceInfo, CreateStream createStreamCallback, EvaluateHeaderFooterExpressions evalHeaderFooterCallback, PageSettings pageSettings
Completed
Last Updated: 13 Feb 2026 10:48 by ADMIN
Created by: Prashant
Comments: 7
Category: Reporting
Type: Feature Request
2

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.

Unplanned
Last Updated: 04 Apr 2025 10:42 by ADMIN
Scheduled for 2025 Q3
Created by: Jonathan
Comments: 0
Category: Reporting
Type: Bug Report
2

Password-protected PDF documents generated with Telerik Reporting have blank pages when opened with an iPhone.

Unplanned
Last Updated: 11 Apr 2024 07:01 by Stavros

When I deploy the Angular HTML5 Report Viewer demo on Docker and build for production I receive the next error:

main.fa32b7794d384513.js:1 Uncaught Error: Invalid template:'<td class="#=data.cssClass#" role="gridcell"><a tabindex="-1" class="k-link" href="\#" data-#=data.ns#value="#=data.dateString#">#=data.value#</a></td>' Generated code:'var $kendoOutput, $kendoHtmlEncode = kendo.htmlEncode;$kendoOutput='<td class="'+(data.cssClass)+'" role="gridcell"><a tabindex="-1" class="k-link" href="#" data-'+(data.ns)+'value="'+(data.dateString)+'">'+(data.value)+'</a></td>';return $kendoOutput;'
    at Object.compile (main.fa32b7794d384513.js:1:269410)
    at main.fa32b7794d384513.js:1:565164
    at Object.dt (main.fa32b7794d384513.js:1:598166)
    at 961 (main.fa32b7794d384513.js:1:1411020)
    at n (runtime.142728358b17fb3f.js:1:128)
    at 735 (main.fa32b7794d384513.js:1:117899)
    at n (runtime.142728358b17fb3f.js:1:128)
    at 158 (main.fa32b7794d384513.js:1:110372)
    at n (runtime.142728358b17fb3f.js:1:128)
    at main.fa32b7794d384513.js:1:1503100

When I remove the viewer from the project the problem disappears.

With the same 'Dockerfile' and 'nginx.conf' the Native Angular Report Viewer works as expected.

Unplanned
Last Updated: 15 Apr 2024 08:49 by ADMIN
Created by: Plamen Ratchev
Comments: 0
Category: Reporting
Type: Feature Request
5

In the non-native angular report viewer we were using a customized template to change the order of the buttons and also to add custom buttons. We want to migrate to the Native Angular Report viewer but it lacks toolbar customization options. We need to be able to change the order and hide existing toolbar functions. Also we need the ability to define custom buttons with custom logic that executes when the button is pressed. 

I've tried to create a sub-class of the ReportingAngularViewerComponent and define a custom template for the toolbar, but the problem is that some of the core toolbar buttons (like zoom and pager) use custom local Telerik components that aren't exported from the ReportingAngularViewerModule, so I can't use those directly. 

It would be great if you can export all components used in the ReportingAngularViewerModule or provide an alternative way to customize the toolbar (may be similar to how you allow customization of the toolbar for the Editor control where users can define what toolbar commands are available, order them as they like and also define custom commands)

Unplanned
Last Updated: 08 Apr 2024 09:29 by Víctor

As an implementer, I sometimes need to trigger the Web Report Designer's commands programmatically. For example, saving the report definition when an external button is clicked.

Exposing an API for invoking the designer's commands would be of great help in implementing such functionality.

Unplanned
Last Updated: 03 Apr 2024 13:49 by Ludek

To preview/export localized reports in different languages, I change the thread's current culture in the report viewer's ExportBegin/RenderingBegin events and reset it back to the original culture in the ExportEnd/RenderingEnd events.

This approach works well in .NET Framework projects but in .NET Core projects, the culture is not reset properly.

Changing the culture in the events of the desktop report viewers should work both in .NET Framework and .NET Core projects.

Unplanned
Last Updated: 03 Apr 2024 11:28 by Gursharan
Created by: Gursharan
Comments: 0
Category: Reporting
Type: Bug Report
1

The Upgrade Wizard for Visual Studio backs up all files, including those in the '.vs' folder. In Visual Studio 2017 this may cause errors when upgrading due to the locked file 'db.lock':

System.IO.IOException: The process cannot access the file 'C:\Users\reportingagentuser\Desktop\reportlibrary1\ReportLibrary1\.vs\ReportLibrary1\v15\Server\sqlite3\db.lock' because it is being used by another process.
   at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
   at System.IO.File.InternalCopy(String sourceFileName, String destFileName, Boolean overwrite, Boolean checkHost)
   at System.IO.File.Copy(String sourceFileName, String destFileName, Boolean overwrite)
   at Telerik.Reporting.UpgradeWizard.Engine.Services.BackupService.BackupDirectory(String directoryName)
   at Telerik.Reporting.UpgradeWizard.Engine.Services.BackupService.BackupDirectory(String directoryName)
   at Telerik.Reporting.UpgradeWizard.Engine.Services.BackupService.BackupDirectory(String directoryName)
   at Telerik.Reporting.UpgradeWizard.Engine.Services.BackupService.BackupDirectory(String directoryName)
   at Telerik.Reporting.UpgradeWizard.Engine.Services.BackupService.BackupDirectory(String directoryName)
   at Telerik.Reporting.UpgradeWizard.Engine.Services.BackupService.BackupDirectory(String directoryName)
   at Telerik.Reporting.UpgradeWizard.Engine.ProjectItem.BackupInternal()
   at Telerik.Reporting.UpgradeWizard.Engine.UpgradeItem.Backup()</event>

Duplicated
Last Updated: 08 Apr 2024 09:38 by ADMIN
Created by: Peter
Comments: 1
Category: Reporting
Type: Feature Request
0

The current htmltextbox on the telerik reporter designer does not support html tags for <table>

There is a work around which creates the html text to an image but the quality is not great but more importantly the word wrap functionality is lost.

 

https://docs.telerik.com/reporting/report-items/htmltextbox/overview#supported-html-tags

 

Peter

Unplanned
Last Updated: 01 Apr 2024 09:52 by Andrew

It would be great if the expressions were validated before leaving the expression editor rather than only finding out I missed a bracket ')' when running the report.

Completed
Last Updated: 10 Jul 2024 10:00 by ADMIN
Release 2024 Q3

The Preview button of the HTML5 Report Viewer is not styled appropriately when using Kendo SASS themes:

Unplanned
Last Updated: 27 Mar 2024 08:49 by Muhammad

.NET applications do not support rendering extensions like the XPS and MHTML rendering but the Reporting engine attempts to resolve them in such applications regardless.

There should be no attempts to resolve unsupported rendering extensions in .NET applications.

Under Review
Last Updated: 01 Apr 2024 09:46 by ADMIN
Created by: Dominik
Comments: 1
Category: Reporting
Type: Feature Request
1

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

Unplanned
Last Updated: 25 Mar 2024 11:53 by Todor
Created by: Todor
Comments: 0
Category: Reporting
Type: Feature Request
4

Telerik Reporting supports various Barcodes.

It will be very useful if it also supports out-of-the-box Radio Frequency Identification (RFID).

The blog RFID vs Barcode: Comparison, Advantages & Disadvantages elaborates on the difference between the Barcode and RFID and why the latter is preferred in some scenarios. 

Under Review
Last Updated: 05 Apr 2024 08:39 by ADMIN

Using the November 2023 Report Designer, when a resize a Panel and then press Ctrl-Z to undo the resize, all objects within the Panel are lost.

I was able to confirm this by saving as a second copy and then comparing the XML between them.

Completed
Last Updated: 10 Jul 2024 10:00 by ADMIN
Release 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. 

Unplanned
Last Updated: 11 Dec 2024 20:14 by JeffVisibilEDI

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:
https://www.telerik.com/forums/request-ability-to-show-an-ellipsis-in-a-text-box-when-the-text-overflows-the-available-space

Unplanned
Last Updated: 15 Mar 2024 10:37 by Joby

I use HTML content like the below in an HtmlTextBox:

<a style="color: red" href="some link here">some text</a>

The color is not respected when I export to PPTX. The output color of the generated link is always the default blue. In the rest of the formats that support hyperlinks, the color is correct.

I tried to wrap the <a> tag also with <p> and <span> with the same color setting, to no avail.

Unplanned
Last Updated: 21 Mar 2024 14:07 by ADMIN

I am using Kendo UI Spreadsheet control in our project to present Tabular contents that end user can easily modify just like a normal spreadsheet operations and I saved it in database using toJSON method provided by kendo spreadsheet.

When I will get the database driven JSON data from kendo spreadsheet as mentioned above,  I want to present it in Telerik Reporting using Table (Datasource of that Table will be from JSON data I saved earlier).

Currently there is no such feature available in Telerik Reporting and I would like to request that feature to be included in future release.

Thanks

Unplanned
Last Updated: 14 Mar 2024 09:26 by Philip

I am using the Blazor Web Report Designer widget which when initialized, loads its theme based on the @progress/kendo-theme-default - npm (npmjs.com) theme and overrides the styles in my Blazor application. There is no way to disable the loading of the designer's theme and the application looks inconsistent as a result.