Last Updated: 17 Jan 2020 14:13 by ADMIN
Created by: Ludek
Comments: 0
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: "".

Last Updated: 14 Jan 2020 11:26 by ADMIN
When providing both inline JSON and service Url to WebServiceDataSource, in design time the data is requested from the service instead of being taken from the inline JSON to reduce the network load.
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 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 }

Last Updated: 03 Dec 2019 12:00 by ADMIN
Sometimes when the width of the page is less than the one of the report (<13px). This content on the right side (the last 12px) will be not visible.
Last Updated: 16 Jan 2020 05:40 by Sami
The TOC is missing when the report is exported programmatically to Word in .NET Core application
Last Updated: 25 Nov 2019 12:27 by ADMIN
If the data retrieval class is implementing IDisposable, the engine never invokes Dispose method. This can result in unexpected and unwanted data caching. Consider to invoke the IDisposable.Dispose if the data retrieval class is referenced by type (this.objectDs.DataSource = typeof(MyDataLayer))
Last Updated: 15 Nov 2019 12:15 by ADMIN
In some cases, the report width is bigger than the page width. Horizontal scroll appears.
Last Updated: 14 Nov 2019 11:02 by ADMIN
MultiValue parameter cannot be selected/ unselected in iOS 13.2 
Last Updated: 05 Nov 2019 14:42 by ADMIN
If the Kendo SASS based theme is used the resize handle and collapse/expand icon has some UI issies.
Last Updated: 04 Nov 2019 10:03 by ADMIN

We are using a background image in our report. We noticed that on the Mac, the graphs were rendering very small when exporting to PowerPoint.

I found this thread that said to set the ‘UseMetafile’ rendering device setting to False. After doing so, it fixed the graph issue but then broke the background image, for both Windows and Mac PowerPoint. The background image is now very small.

Last Updated: 31 Oct 2019 14:20 by ADMIN
When I set the column width to a larger size with Bindings the table column width increases correctly.
The problem is when I am trying to decrease the column width. The column maintains the size defined in the designer.
Last Updated: 31 Oct 2019 11:27 by ADMIN
The Hebrew text is displayed correctly in the Report Designer, the text flowing from right to left. In PDF format though the text is reversed. In Docx, the text is exported correctly.
Last Updated: 30 Oct 2019 14:19 by ADMIN
The Preview button when the parameters are visible appears in the top left corner of the parameters area and overlaps with the parameter editors.
Last Updated: 30 Oct 2019 12:13 by ADMIN
If the target Html element for the Html5 Viewer (e.g. <div>) does not have an ID and is selected, for example, with a CSS class, the viewer will not display the report even if the Html5 Viewer widget has its Id option set.
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 -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: 08 Oct 2019 08:11 by ADMIN
I have a report that has a sub-report inside it and it's working just fine.

The sub-report can give one or multiple lines as output for a single row in the master report.
However, when a row's height in the master report is too high (due to the output of other cells, not the sub-report), then the sub-report's output doesn't fill the gap in the master report even when I use anchoring to top and bottom.
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