Last Updated: 05 Oct 2020 14:44 by ADMIN

In my report, there is a Table with one group and PageBreak set to After for the group. If the property ColumnHeadersPrintOnEveryPage is with the default value False, in Interactive view there are three pages generated, one for each group, which is correct.

If I set ColumnHeadersPrintOnEveryPage to True, the number of pages increases to four in the Interactive view mode. There is an additional page break introduced in the last group.

Last Updated: 29 Sep 2020 14:06 by ADMIN

Hi there,

Adding an external style sheet to a report in a report-book triggers an error when previewing the report book, "Object reference not set to an instance of an object" 

I've attached the bare minimum project to reproduce the error.

I've also tried upgrading to R3 2020


Last Updated: 28 Sep 2020 09:00 by ADMIN
When you bind the Style.BackgroundImage.ImageData property of the PageHeader section to the value of a report parameter (a valid URL), it is not respected.
Last Updated: 28 Sep 2020 08:16 by ADMIN
Shapes are rendered in <img> tags in Html rendering, which slows down overall rendering. In other formats like PDF, the same report runs fast.
Last Updated: 21 Sep 2020 12:42 by ADMIN

Steps to reproduce:

1. Add a ConditionalFormatting to one report item (for example crosstab).

2. Select the first existing rule.

3. Click "Copy Selected Rule"

4.  Click "Paste Rules" - nothing happens.

You can also see the attached video which demonstrates the problem.

Last Updated: 18 Sep 2020 11:03 by ADMIN

If there is a pageMode option, An error event is fired at initialization, even if no error occurred.

The problem can be reproduced with the HTML5 demo:

                    serviceUrl: "api/reports",
                    reportSource: {
                        report: "Telerik.Reporting.Examples.CSharp.ReportCatalog, CSharp.ReportLibrary",
                        parameters: {}
                    viewMode: telerikReportViewer.ViewModes.INTERACTIVE,
                    pageMode: telerikReportViewer.PageModes.SINGLE_PAGE,
                    scaleMode: telerikReportViewer.ScaleModes.SPECIFIC,
                    scale: 1.0,
                    enableAccessibility: false,
					sendEmail: { enabled: true },
					ready: function () { debugger; },
					error: function (e, args) { debugger; }

Last Updated: 17 Sep 2020 13:37 by ADMIN

The FreezeColumnHeaders functionality doesn't behave properly when Action is set on the header. The white background color of the headers which we need to see in the viewer when the FreezeColumnHeaders property is set to True is missing. Please, check the attached project which reproduces the issue. If you reset the Action property of the ID header, then the FreezeColumnHeaders functionality works as expected.

Last Updated: 08 Sep 2020 13:42 by ADMIN

1. webServiceDataSource1URL - For the Service URL we are using the inline variable "@url" and for Value and design time value we are using the "https://services.odata.org/TripPinRESTierService/People"

2. webServiceDataSource2NoURL - For the service URL we are directly using the "https://services.odata.org/TripPinRESTierService/People"

In scenario #1 there occurs an error "An error occurred while loading the data schema for 'webServiceDataSource1URL': unexpected token | in JSON at position 0".

The fields for #2 are loaded and for #1 are not.

Last Updated: 08 Sep 2020 10:46 by ADMIN
If a table occupies more than one page in PowerPoint rendering format, some of its content may remain hidden by the  Page Footer.
Last Updated: 02 Sep 2020 09:40 by ADMIN

With the following HTML 'underline' is applied to the whitespace run-time but not design-time.

<span style="text-decoration: underline">PAYMENTS ONLY        </span>TO:

The whitespace is reduced to a single space irrespective of its position in the text. For example the following content:

PAYMENTS          ONLY                    TO:

is displayed as shown in this screenshot.

Last Updated: 02 Sep 2020 08:36 by ADMIN

When an HTML content is placed in nested block elements, it is displayed differently from the way the browser displays it.

For example, the following HTML:


is vertically displaced compared to the same content when not wrapped in another block element:


This image demonstrates the difference.

Last Updated: 01 Sep 2020 08:16 by ADMIN
If the html contains italic text then the content renders fine in the viewer, but the italics are missing when exported to PDF.
Last Updated: 06 Aug 2020 12:34 by ADMIN
After selecting some elements in the popup of multiselect, the popup jumps to the top-left side corner of the window.
Last Updated: 06 Aug 2020 08:13 by ADMIN

When there are both ASCII characters and non-ASCII characters (such as Chinese) in the text box, the position of line wrapping in Linux Docker is incorrect. Some of the data get lost.

More information can be found in the forum thread TextBox's line wrap position is incorrect in docker.

Last Updated: 31 Jul 2020 11:02 by ADMIN
In the attached screenshot the Minimum value of '-0.3' is not displayed on the X-axis. The issue is reproducible with some values but cannot be reproduced with others, for example with Minimum of '-0.2' in the same report. The sample report is attached.
Last Updated: 28 Jul 2020 16:05 by ADMIN
When you open a report in the HTML 5 Report Viewer with the default ListView parameter editors, and you have parameters that filter based on other selected parameters, deselecting the last parameter does nothing. See the linked video for the issue. The ComboBox parameter editors work correctly.
Last Updated: 09 Jul 2020 12:23 by ADMIN

In Visual Studio Report Designer Preview, Use https://play.google.com/store/apps/details?id=com.teacapps.barcodescanner and other apps to scan the barcode(such as attachment Visual Studio Report Designer Preview.png), but after exporting the PDF, The first barcode scan is correct, the result of the second barcode scan is the content of the first barcode(such as attachment Exported PDF.png), Attachment BugDemo.zip is my project, How can I fix this problem, thanks.



Last Updated: 07 Jul 2020 12:09 by ADMIN

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: 07 Jul 2020 06:23 by ADMIN
The JsonDataSource component escapes characters like quotation marks in the Web Report Designer, which makes the JSON invalid.
Last Updated: 06 Jul 2020 08:59 by ADMIN

Sometimes the following unexpected behavior can be observed with the WinForms report viewer.

Steps to reproduce:

1. Run the WinForms application;

2. Select a value for the parameter and click on Preview.

The window's size is decreased.

1 2 3 4 5