Last Updated: 03 Apr 2020 14:07 by ADMIN

When the SqlDataSource wizard uses a connection to a non-MSSQL database, which is registered in a Report Server instance, previewing the results on the "Preview data source results" page will throw an exception.

Last Updated: 30 Mar 2020 10:01 by ADMIN

Steps to reproduce:

1. Create a Blazor application;

2. Add Teleri.Reporting NuGet package;

3. Add Telerik.WebReportDesigner.Services Nuget package -> some of the app dependencies are broken.



Refer the .NET Standard DLLs from C:\Program Files (x86)\Progress\Telerik Reporting <Version>\Bin\netstandard2.0.

Last Updated: 27 Mar 2020 15:20 by ADMIN
In a table with dynamic row groups with PageBreak set to 'After', when the report is rendered in Interactive view mode, some of the groups with large content are additionally split into more pages. 
Last Updated: 27 Mar 2020 11:03 by ADMIN
Created by: MustrumRidcully
Comments: 3
Type: Bug Report

The pdf documents generated with Telerik Reporting are not compatible with the BlueBeam Revu PDF editing tool.

For example, if we select a text and try to change the font size, the selected text inverts (upside down) and flies to the left of the document. 

Last Updated: 24 Mar 2020 09:38 by ADMIN
Sometimes when you make a change in the Visual Studio report designer, then save it and click on Preview, the project is built but the report remains in Design mode.
Last Updated: 17 Mar 2020 06:53 by ADMIN
In the HTML5 Report Viewer, in case there are cascading parameters, the ValueMember is displayed instead of DisplayMember. In the report designers, the behavior works as expected.
Last Updated: 13 Mar 2020 12:37 by ADMIN
Last Updated: 06 Mar 2020 11:15 by ADMIN

The pinch zoom feature on mobile devices is not working as expected.

  • On iOS devices, the zooming is fidgety, zooming is not accurate where the pinching gesture occurs.
  • On Android devices, Zoom In on the report will take the page to the top left. 
Last Updated: 04 Mar 2020 12:20 by ADMIN
Created by: Todor
Comments: 0
Type: Bug Report
SignalR jQuery plugin fails to load when the Angular Report Viewer is present in the same application. Removing the following lines from each instance in Reporting package resolves the issue but may introduce other issues:
window.$ = jquery;

window.jQuery = jquery;

For example, removing the above lines results in the error '$.throttle is not a function' in the 'continuous scroll' mode of the viewer. The workaround is to use the 'single page' mode.


Last Updated: 05 Feb 2020 14:18 by ADMIN

The following exception occurs when you attempt to add a Html5 Report Viewer from the VS item template in a project that already contains a CLR report:

"Error: Fail to add project reference System.Runtime.InteropServices.COMException (0x80004005): Adding 'WebApplication2' as a project-to-project reference would cause this project to reference itself. at VSLangProj.References.AddProject(Project pProject) at Telerik.Reporting.Vs.Common.ProjectManager.TryAddProjectReference(Project projectToReference)"

The viewer is still added successfully and displays the report.

Last Updated: 27 Jan 2020 11:42 by ADMIN
If a RTL text that contains strings and digits is exported to PDF or printed, in the exported document first the digits are printed and then the strings.
Last Updated: 23 Jan 2020 09:36 by ADMIN
If you click multiple times fast on the Next button of the viewer while on the penultimate page, an error may occur. The error indicates that a page with a page number that does not exist in the report - 'pageCount+1' is missing. The error message persists even if you navigate to other pages. The issue occurs in SINGLE_PAGE pageMode.
Last Updated: 21 Jan 2020 11:04 by ADMIN
Created by: Ludek
Comments: 1
Type: Bug Report

Print functionality doesn't work in React application.

Steps to reproduce:

1. You may use the sample project from How to use HTML5 Report Viewer in React Application article.

2. Run the project and click on Print.

The following error can be seen in the browser's console: Resource interpreted as Document but transferred with MIME type application/pdf: "https://demos.telerik.com/reporting/api/reports/clients/a7fdd020ec4/instances/3f53abd1614/documents/c3923e685e6d6ebefb3d11?response-content-disposition=inline".

Last Updated: 21 Jan 2020 10:30 by ADMIN
If the report contains an HtmlTextBox with no content or whitespace as content, the generated PPTX document is corrupted.
Last Updated: 10 Jan 2020 15:56 by ADMIN

Under Linux, when the font is set with Conditional Formatting some of the TextBoxes may be rendered with different that the expected Font in Docx. Other TextBoxes set with the same rule to the same font are rendered correctly.

The same report rendered in Docx under Windows produces the correct document.

Last Updated: 06 Jan 2020 10:07 by ADMIN
Created by: Paul Johnson
Comments: 0
Type: Bug Report
If you export a table in RTF whose content is longer than 1 page, in the exported document the whole table will be placed on one page only and the rows that are in the end might not be seen.
Last Updated: 09 Dec 2019 17:55 by ADMIN
The report is not exported correctly in PDF when the Font is Sakkal Majalla and Text Align is Right. If you set the Text Align to left, everything works as expected.
Last Updated: 05 Dec 2019 15:22 by ADMIN

When merging the ReportViewer's WPF theme dictionaries from the DLL in App.xaml, the VS2019 Designer fails due to a problem with a ZoomComboBoxStyle definition.

This causes all Telerik UI for WPF control's styles fail to load in the Visual Studio designer.


Instead of App.xaml, merge the ReportViewer's theme dictionary closer to the control.

For example in the ReportViewer's direct parent:

<!-- Moved from app.xaml -->
<ResourceDictionary Source="/Telerik.ReportViewer.Wpf.Themes;component/Themes/Summer/Telerik.ReportViewer.Wpf.xaml" />

<tr:ReportViewer x:Name="ReportViewer1" ReportSource="{Binding CurrentReport}" />

Last Updated: 04 Dec 2019 14:00 by Mark

Hello Telerik team!

In the attachment, there are two PDFs, generated by the same template (also in attachment): one built under Windows, another one - under Linux (Docker). See red boxes as defects on the screenshot:

Text wrap issues

Text wrap issues

Dockerfile fragment:

# MS TrueTypeFonts install
RUN wget http://ftp.de.debian.org/debian/pool/contrib/m/msttcorefonts/ttf-mscorefonts-installer_3.6_all.deb -P ~/Downloads
RUN apt install -y ~/Downloads/ttf-mscorefonts-installer_3.6_all.deb

RUN apt-get install -y libc6-dev
RUN apt-get install -y libgdiplus
RUN apt-get install -y libx11-dev
RUN rm -rf /var/lib/apt/lists/*


Please help us to resolve these issues in Linux.

Last Updated: 04 Dec 2019 10:13 by ADMIN

When you try to send the report through the SendMailMessage functionality but an exception is thrown, the report will disappear. If you click on Refresh and try again with fake data, the exception will be thrown but the report will remain. If you prefer to refresh it automatically, you can use the error event:

var viewer = $("#reportViewer1")
    serviceUrl: "api/reports/",
    reportSource: {
        report: "Report Catalog.trdp",
    error: function (e, args) {
        console.log("This event handler will be called after a page of the report is ready.");
        console.log("The error message is: " + args);
    viewMode: telerikReportViewer.ViewModes.INTERACTIVE,
    scaleMode: telerikReportViewer.ScaleModes.SPECIFIC,
    scale: 1.0,
    enableAccessibility: false,
    sendEmail: { enabled: true }

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