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Telerik Control Panel Forum
2 answers

Scan.cshmtl via View:

@(Html.Kendo().Grid<Main_Kendo.Models.ScannerViewModel>()                <---  Html.Kendo gets red underline error ??? 


.Columns(columns =>         


columns.Bound(b => b.Scan).Width(140);             

columns.Bound(b => b.BarcodeImage).Width(140);             

columns.Bound(b => b.DropZone).Width(140);             

columns.Bound(b => b.EnteredBy).Width(100);             

columns.Bound(b => b.EnteredDate).Width(130);             

columns.Command(command => command.Destroy()).Width(110);         


Whatever below.... 



The error message:

HtmlHelper <dynamic> doesn't contain a definition for Kendo and no accessible extension method for 'Kendo' accepting a first argument of type HtmlHelper

Already have ScannerViewModel in Models folder, Kendo.Mvc was missing references that I added.   

Top achievements
Rank 1
 answered on 26 Apr 2021
4 answers

This problem is back with the latest version of Telerik UI R2 2021 (2021.1.119).

After updating the packages using the Telerik Control panel no projects will build om Visual Studio 2019 and Nuget packages will not install. 


C:\Program Files\dotnet\sdk\5.0.102\NuGet.targets(131,5): error : The local source 'C:\Program Files (x86)\Progress\ToolboxNuGetPackages' doesn't exist.

The workaround is to manually create this folder: 'C:\Program Files (x86)\Progress\ToolboxNuGetPackages'

Telerik team
 answered on 08 Apr 2021
3 answers

I cannot download the Control Panel from your site., see the screenshot attached.


Can you advise?

Top achievements
Rank 1
 answered on 01 Apr 2021
1 answer

In order to upgrade to new versions of products I have to uninstall all the existing ones, first. This takes a hundred years and is ridiculously slow.

Add an auto-uninstaller for updated products selected to be installed. That way, I can run it all overnight and, hopefully, it'll be done by morning.

Thank you.

Telerik team
 answered on 11 Jan 2021
2 answers

running Control Panel always asks for an update, but when download progressbar display, app crash, with these details:

Application: ProgressControlPanel.exe
Framework Version: v4.0.30319
Description: The process was terminated due to an unhandled exception.
Exception Info: System.IO.FileNotFoundException

Server stack trace: 
   at Telerik.CommonInstaller.Application.ControlPanel.SelfUpdater.InitiateDownloader(String downloadAddress)
   at Telerik.CommonInstaller.Application.ControlPanel.SelfUpdater.StartDownload()
   at Telerik.CommonInstaller.Application.ControlPanel.SelfUpdater.<>c__DisplayClass22_0.<StartUpdateAsync>b__0()
   at System.Runtime.Remoting.Messaging.StackBuilderSink._PrivateProcessMessage(IntPtr md, Object[] args, Object server, Object[]& outArgs)
   at System.Runtime.Remoting.Messaging.StackBuilderSink.AsyncProcessMessage(IMessage msg, IMessageSink replySink)
   at System.Runtime.Remoting.Proxies.RealProxy.EndInvokeHelper(System.Runtime.Remoting.Messaging.Message, Boolean)
   at System.Runtime.Remoting.Proxies.RemotingProxy.Invoke(System.Object, System.Runtime.Remoting.Proxies.MessageData ByRef)
   at System.Action.EndInvoke(System.IAsyncResult)
   at Telerik.CommonInstaller.Application.ControlPanel.SelfUpdater+<>c__DisplayClass22_0.<StartUpdateAsync>b__1(System.IAsyncResult)
   at System.Runtime.Remoting.Messaging.AsyncResult.SyncProcessMessage(System.Runtime.Remoting.Messaging.IMessage)
   at System.Runtime.Remoting.Messaging.StackBuilderSink.AsyncProcessMessage(System.Runtime.Remoting.Messaging.IMessage, System.Runtime.Remoting.Messaging.IMessageSink)
   at System.Runtime.Remoting.Proxies.AgileAsyncWorkerItem.DoAsyncCall()
   at System.Runtime.Remoting.Proxies.AgileAsyncWorkerItem.ThreadPoolCallBack(System.Object)
   at System.Threading.QueueUserWorkItemCallback.WaitCallback_Context(System.Object)
   at System.Threading.ExecutionContext.RunInternal(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
   at System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
   at System.Threading.QueueUserWorkItemCallback.System.Threading.IThreadPoolWorkItem.ExecuteWorkItem()
   at System.Threading.ThreadPoolWorkQueue.Dispatch()
   at System.Threading._ThreadPoolWaitCallback.PerformWaitCallback()


Faulting application name: ProgressControlPanel.exe, version: 2020.2.624.1, time stamp: 0x5ef36079
Faulting module name: KERNELBASE.dll, version: 10.0.19041.662, time stamp: 0xe6477cce
Exception code: 0xe0434352
Fault offset: 0x0012a892
Faulting process id: 0x2bc4
Faulting application start time: 0x01d6ca1c0fe4f7c7
Faulting application path: C:\Program Files (x86)\Progress\Control Panel\ProgressControlPanel.exe
Faulting module path: C:\WINDOWS\System32\KERNELBASE.dll
Report Id: d06cad62-cf72-426e-b267-d03dd1cd40e9
Faulting package full name: 
Faulting package-relative application ID: 

Top achievements
Rank 2
 answered on 08 Dec 2020
5 answers
Hi. I get a connection problem when I try to run the current Control Panel. Please advise.
Telerik team
 answered on 03 Nov 2020
3 answers

After I update Telerik Control panel and several products (no issues reported).  Then I went to open one of my UI for WPF projects and/or UI for UWP projects and VS 2019 starts to load the project then just gets into a "Not Responding" state.  Waited 15 minutes, still same not responding so I had to "end task".

Any ideas of what the Telerik updates may have done to my VS environment?

Cheers, Rob.

Telerik team
 answered on 27 Oct 2020
4 answers

I have configured the Control Panel to install my Telerik selection into "V:\Telerik".One entry in that directory is a folder "ToolboxNuGetPackages".

Last night I updated the Telerik libraries to the current version using the Progress Control Panel. A few minutes ago, I created a new solution for a WPF netcoreapp (in Jetbrains Rider), added references to the required Telerik libraries and tried to build the otherwise untouched solution.

It failed during the ResolvePackageAssets task, because nuget was unable to find the fallback package folder "C:\Program Files (x86)\Progress\ToolboxNugetPackages".

With a bit of help from StackOverflow I found that this setting is defined in the file "C:\Program Files (x86)\NuGet\Config\Telerik UI for WPF.config", and I for one did not put it there. In fact, I had changed it a few days ago,while investigating some other build failures; after all, it was a non-existing path, so things could not get worse. Now, after the update, the original path is back ... and as installer the Control Panel is my prime suspect.

So I'd like to ask somebody at Telerik to check if the Control Panel does write the contents of that file and if so, to make sure that it uses the actual location of the ToolboxNuGetPackages folder. 

In my case, I changed the path to "V:\Telerik\ToolboxNuGetPackages", unloaded and reloaded the project and it built without further problems.


I tried to submit this via the "Get Technical Support" item in my account page, but the UI is so user-friendly that submissions for the Control Panel are impossible there.


Kind regards,


Telerik team
 answered on 18 Aug 2020
1 answer

     Hello, i'm trying to reinstall my computer, i had a licence until july 2019, when i try to download last versiĆ³n i paid for there is nothing to donwload, how can i get the las version included in my subscription?


thank you

Nikolay Mishev
Telerik team
 answered on 05 Aug 2020
3 answers

I have RadButtonLink  which fires method to download image from server side without refreshing the page, but this RadButtonLink located under RadPanelBar which make it unassailable, how to solve this issue? 



<asp:Content ContentPlaceHolderID="CPHMain" ID="Content1" runat="server"><div class="ChildBody"><asp:UpdatePanel ID="UpdatePanel1" runat="server"><ContentTemplate><Telerik:RadPanelItem runat="server" Expanded="false" Selected="true" Text="Virtual Card Display"><Items><Telerik:RadPanelItem runat="server" Value="VirtualCardDisplay"><ItemTemplate><div class="container1"><div class="box1"><div class="part-1" style="white-space: nowrap; flex: 0 0 25% !important"><asp:ImageButton ID="imgDownloadLarge" runat="server" Height="11pt" ImageAlign="AbsMiddle" ImageUrl="../../MasterTemplate/Images/download_png_icon.png" OnClientClick="lnkDownloadLarge_Click1" Width="11pt" ToolTip="Download image" /><Telerik:RadLinkButton ID="lnkDownloadLarge1" runat="server" CssClass="LinkAction" Text="Download Large Image" OnClick="lnkDownloadLarge_Click1"><Icon CssClass="rbDownload"></Icon></Telerik:RadLinkButton></div><div class="part-2" style="white-space: nowrap; flex: 0 0 75% !important"><asp:Label ID="lblLargeImageResponse" runat="server" ForeColor="Red" Text=" "></asp:Label></div></div></div></ItemTemplate></Telerik:RadPanelItem></Items></Telerik:RadPanelItem></ContentTemplate></asp:UpdatePanel></div></asp:Content>


Telerik team
 answered on 20 May 2020