Declined
Last Updated: 12 Feb 2021 08:16 by ADMIN
The problem with the web report designer occurred after updating to R1.2021version. I used a web service datasource in a report and created one inline and one query parameter. But as you see from the attached file, the values of those parameters are shown as Object instead of showing real value. I see this issue after updating to R1 2021, but in the previous version, it was showing correctly. If you open the report via Standalone Report Designer it shows correctly.
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 

api/reports/clients/5344b9acb49/instances/7775d1f9944/documents/133d0da1ce597ad792f356/resources/e3949b7f06e640b888683f5173637591/



Completed
Last Updated: 04 Mar 2026 13:12 by ADMIN
Release 2026 Q1

I have projects on .NET Core and I want to use the System.Text.Json serializer that is the new default, but reporting relies on Newtonsoft.Json.

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ADMIN EDIT

There are two approaches that can be taken right now to solve this:

OPTION 1: define separate endpoints (services, projects) for the different tasks - they can still use the same database layer through a shared project, depending on the architecture you have. This would let you have separated services with the appropriate serializers without custom attributes and code (see below). For example, create a separate project for the reporting REST services.

OPTION 2: add some custom decoration on the endpoints so you can choose which serializer is used on each, you can find some examples here: https://stackoverflow.com/questions/59650907/how-to-configure-two-json-serializers-and-select-the-correct-one-based-on-the-ro - the point being to register a serializer depending on the endpoint based on your own code rather than let the framework put one in for all endpoints.

NOTE: This would be a breaking change.

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Unplanned
Last Updated: 11 Feb 2021 10:20 by ADMIN
When you try to select a file for the report source, the white spaces in the generated path are URL encoded (%20) and therefore the report is not found.  Manually replacing the %20 in the path with white spaces solves the issue.
Completed
Last Updated: 11 Nov 2021 15:51 by ADMIN
Release R3 2021 SP1
Float report parameter = 0 or negative whole number is returned as int and an exception is thrown in the viewer. The issue is observed only in .NET Core projects.
Unplanned
Last Updated: 09 Feb 2021 10:48 by ADMIN
Created by: Andrey
Comments: 0
Category: Reporting
Type: Bug Report
3
A report has tooltips values for elements in a Graph and it works when displaying it in a Viewer. After it's exported to PDF the tooltips are not displaying in the PDF document, though 'ViewerRenderToolTips' is set to true.
Unplanned
Last Updated: 08 Feb 2021 13:12 by ADMIN

In some cases, when the path of the file is used as a Value of the PictureBox, the WMF is not displayed in PrintPreview or in the printed report. The workaround is to embed the image by selecting the file as a Value:

1. Go to the Value property of the PictureBox and click on the three dots (...)

2. In the File name field, type *.* and Enter.

3. Select the WMF file.

Unplanned
Last Updated: 29 Mar 2021 12:33 by ADMIN
Created by: Mario
Comments: 3
Category: Reporting
Type: Feature Request
0

Now you can do it by grouping several options, but what i want is to hide one by one.



Unplanned
Last Updated: 05 Feb 2021 15:32 by ADMIN
Created by: Mario
Comments: 1
Category: Reporting
Type: Feature Request
2

I am using this to color the xaxis, but I notice, it changes the color of all items, so what I want is to color them individually based in a condition like this:

XAxis.Style.Color =  IIf(ToolStatus=1,'Green','Red')

The problem all the text is in green not considering the condition individually by column.


Unplanned
Last Updated: 04 Feb 2021 08:26 by ADMIN
Created by: Donna
Comments: 0
Category: Reporting
Type: Feature Request
2
It would be useful to have the ability to create custom report items. For example, KPI reporting control, which is currently not supported by Telerik.
Completed
Last Updated: 24 Feb 2021 10:04 by ADMIN
Release R1 2021 SP1

The following error may be thrown when trying to render a report in PDF under .NET 5 in the Linux systems:

"SEH":"System.ArgumentOutOfRangeException: Index and length must refer to a location within the string. (Parameter 'length')
          at System.String.Substring(Int32 startIndex, Int32 length)
          at Telerik.Reporting.Paging.TextBox.MeasureText(String text, TextFormat format)
          at Telerik.Reporting.Paging.TextBox.CreateContent(InitializationContext initContext)
          ...

The same reports work correctly in Windows.

Unplanned
Last Updated: 01 Feb 2021 10:23 by ADMIN
Created by: Smiljan
Comments: 1
Category: Reporting
Type: Feature Request
2
When designing reports and using Sub-Report elements, it could be nice to have a way of opening the report linked through the element. Currently, you need to find that report manually based on the ReportSource value. 
Unplanned
Last Updated: 01 Feb 2021 10:08 by ADMIN

When one item is selected, or multiple items are selected where they all have the same size, the Width and Height property is accessible and will be applied for all selected elements. If multiple elements are selected and they do not all have the same width and height, the property becomes blank, and you do no longer have access to the Width and Height property.

It would be great to still have access to the properties so a value can be applied for all selected elements.

Unplanned
Last Updated: 01 Feb 2021 09:44 by ADMIN

When a section is disabled by setting the Visible property to false, the section remains visible in the designer without any visual indication that it is invisible when rendered. Adding such a visual indication would allow users to more easily see that it is disabled.

Having a cross over the section, making it disappear from the designer window, or showing somehow it is disabled would make it easier to understand, as currently the only way to check this is by reading the value of the Visible property in the Properties pane

Unplanned
Last Updated: 16 Jun 2021 06:27 by ADMIN
I display the Html5 Report Viewer in a Kendo Tab. When I close the viewer's tab and resize the browser window, the following error related to the viewer occurs in the browser console:
kendo.all.js:105032 Uncaught TypeError: Cannot read property 'find' of null
    at init.toggle (kendo.all.js:105032)
    at P (telerikReportViewer:9)
    at Object.<anonymous> (telerikReportViewer:9)
    at Object.trigger (telerikReportViewer:9)
    at Object.trigger (telerikReportViewer:9)
    at se (telerikReportViewer:9)
    at Object.setDocumentMapVisible (telerikReportViewer:9)
    at b (telerikReportViewer:9)
    at E (telerikReportViewer:9)
    at o (telerikReportViewer:9)
Completed
Last Updated: 24 Feb 2021 10:04 by ADMIN
Release R1 2021 SP1

Then the HTML5 ReportViewer is set to pageMode SINGLE_PAGE and an update triggeres the Viewer to retrieve the document, the new document is never displayed. 

Status messages appear as usual, "Loading report", "0 pages loaded so far" and "Done. Total 1 pages loaded." but the gray overlay of the Viewer is never removed and the report is not updated. Parameters and toolbar-menu can still be interacted with and trigger new updates, but will not cause the viewer to show the report correctly. Refresh required

Unplanned
Last Updated: 29 Jan 2021 09:34 by ADMIN

ReportViewer will resize correctly when the window is resized by manually dragging the frame, but when 'Maximize' or 'Restore Down' buttons are used, the resize will not occur. 

If continues scrolling is turned on, the next page to load in will be in a different size because it will be in the correct size, while the first page remains in the previous size.

A work-around is to add this codesnippet to the HTML, which will trigger the resize:

function resizeViewer() { $("#reportViewer1").trigger('resize'); }
window.addEventListener("resize", resizeViewer);

Completed
Last Updated: 16 Feb 2022 14:53 by ADMIN
 After the upgrade on telerik-angular-report-viewer to ^12.21.120 from  ^10.20.513, the viewer doesn't make requests to the service. The reports controller uses authentication, which might be related to the issue. The attached file consists of 2 projects- 1 with the old version that is working and the new version that does not work.
Completed
Last Updated: 26 May 2021 07:54 by ADMIN
Release R2 2021

Implementing Drag&Drop for the Web Report Design is a major step toward feature parity with the Standalone Designer, and helps end-users leverage their established workflow when migrating to the Web Report Designer.

  1. Dragging a field from the Fields list onto the surface should A) Create a default Textbox. B) Populate that Textbox with a simple =Fields.field expression.
  2. Dragging and dropping a component from the component tree should create that component at the drop location.
Unplanned
Last Updated: 05 Feb 2021 15:10 by ADMIN
Created by: Claudio
Comments: 3
Category: Reporting
Type: Bug Report
1

The parametersAreaVisible property of the angular report viewer allows controlling the visibility of the report parameters area.

Currently, this property can only be set. Reading the property doesn't reflect the current visibility of the report parameters area.

While jquery can be used as a work around to determine the visibility of the report parameters area (by reading the width of the corresponding DOM element), a proper angular API would be nice.