Error creating Telerik.ReportViewer in the visual designer of Visual Studio

[Lance]

We have a report that needs to be modified.  It was developed by a person who is no longer with the company.
When we bring up the page with the report on it we get the following error in the visual designer in Visual Studio:

Error Creating Control - ReportViewer1Failed to create designer 'Telerik.ReportViewer.WebForms.ReportViewer,
Telerik.ReportViewer.WebForms, Version=4.1.10.714, Culture=neutral, PublicKeyToken=a9d7983dfcc261be'

 

This is the definition in the .ASCX file:

<%@ Control Language="VB" AutoEventWireup="false" CodeFile="ctrlBuyerInvoice.ascx.vb" Inherits="ctrlBuyerInvoice" %>
<%@ Register assembly="Telerik.Web.UI" namespace="Telerik.Web.UI" tagprefix="telerik" %>
<%@ Register assembly="Telerik.ReportViewer.WebForms" namespace="Telerik.ReportViewer.WebForms" tagprefix="telerik" %>

<telerik:ReportViewer ID="ReportViewer1" runat="server" Height="600px" Skin="Default" Width="775px"></telerik:ReportViewer>

 

What do we need to install to be able to edit this report?

Thanks

[Steve]

Hi Lance,

Are you trying to upgrade this project to a newer version of Telerik Reporting? According to your download history for Telerik Reporting the last version you've downloaded is 5.0.11.510 (Q1 2011), while the one from the exception (4.1.10.714 - Q2 2010) is an older one. So in other words, you might not have upgraded properly - please start the Upgrade Wizard to update all references to the newer version. If you have copied manually any dlls to your bin folder - make sure you update them as well i.e. you should have reference to two assemblies:

• Telerik.Reporting.dll
• Telerik.ReportViewer.WebForms.dll

and they should be the same version.

All the best,
Steve
the Telerik team

[Lance]

A little history first: We do software consulting and sometimes use Telerik controls on projects hence my account with Telerik and my download history. In this case we are doing work for a new client whose programmer left 2-3 years ago. They now need to change an old Telerik report and it's up to us to figure out how. We have no idea what the programmer used on that project, there is no Telerik installation software and the site has since been moved to a new server.

Back to my original question, based on the error message what would we need to install (and what version) on this server to be able to edit this report in visual studio to add a new field?

Thanks

[Steve]

Hi Lance,

Thanks for the additional information.
To change an existing Telerik Report, you would need to download and install the Telerik Reporting product, so you can edit the report in the VS Report Designer.

If the work for this client only includes modifying existing report and you would not upgrade, you would need to download Q2 2010 version of the product and rebuild the existing solution. There should not be a need for any other modifications as the original error could only surface when you have version mismatch or stale reference.

Kind regards,
Steve
the Telerik team

[Lance]

Thank you for the info, this sounds like the solution we need but I do not see a download link on the page you indicated.

[Steve]

Hi Lance,

You need to login to your Telerik account and navigate to the product downloads in order to download any Telerik product.

All the best,
Steve
the Telerik team

[Lance]

When I login and navigate to the downloads page as you indicated (http://www.telerik.com/products/reporting/whats-new/release-history/q2-2010-version-4-1-10-714.aspx)  there still is no link.

As I stated above, we are an outside consulting firm hired to modify this report for our client.  The client's programmer left 3 years ago and we have also switched servers since then. We have no idea what the programmer used on that project, there is no Telerik installation software anywhere on the server.  We simply need to install Telerik Reporting Q2 2010 (v4.1.10.714) to be able to edit the report, right?  How do we do that?   It's up to us to figure out how with your help. What does this client need to do to be able to edit this report and add a field?

[Steve]

Hello Lance,

This is not the download page, this is the release history for the new version, I though this was clear from my previous post. To avoid any further confusion I've attached a short video that shows you how to download Telerik Reporting Q2 2010 from your account.

All the best,
Steve
the Telerik team

[Kunal Bagga]

Hi Steve, 
I got the same error in creating Telerik Control. I am getting the error

" Failed to create designer 'Telerik.ReportViewer.WebForms.ReportViewer, Telerik.ReportViewer.WebForms, Version=7.1.13.612, Culture= neutral....' "

I have double check that my Telerik.Reporting.dll and Telerik.Reporting.WebForms references the path where I download the Telerik.Reporting.
As by the given link "http://www.telerik.com/help/reporting/asp-net-report-viewer-embedding.html", though it did not automatically generate the handlers in web.config, I have added the respective handlers. But still I couldn't understand where am I doing wrong. The errors shows even if I create a new project and does all the above. 

[Peter]

Hi Kunal,

Apologies for the inconvenience.

This is a known issue regarding the report viewer design time only and it is fixed in the latest available internal build of Telerik Reporting v7.1.13.621. Please download and test it.

Regards,
Peter
Telerik

[Daniel Sprague]

Hey Peter,

FYI... I ran into this issue as well.  
I downloaded that most recent build (7.1.13.705).  
It solved the immediate issue of not being able to create the control.
No other issues experienced.

Have an awesome day!