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Telerik Designer Error Creating Control

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gc_0620
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gc_0620 asked on 21 Feb 2018, 10:04 PM

Folks,

Using Windows 10 with VS 2017 and Progress® Telerik® UI for ASP.NET AJAX (Version 2018.1.117.45).

Each time I download a new updates, I get attached error message.

Is taking about 2-3 days to research to find out the root cause of this error.

I manually added Telerik.Web.UI.dll and Telerik.Web.UI.Skins.dll in Bin Folder of my project. Also copied both files into C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\Common7\IDE\PublicAssemblies folder. Still no luck.

Telerik please give us a solution what can be done. 2-3 days time is not acceptable to senior management of our organization.

Thanks

gc_0620

 

 

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Rumen
Telerik team
answered on 22 Feb 2018, 01:45 PM
Hello,

The Telerik.Web.Design.dll assembly is no longer added to the GAC by the automated installer and this causes the design-time error if you upgrade via the Upgrade Wizard and your project did not have an explicit reference to the Telerik.Web.Design.dll file in the project folder. You can read more in this section of the documentation: Error Creating Control Failed To Create Designer after upgrade to R1 2018

You can download the hotfix archive from your Telerik.com account, so you can easily copy the Telerik.Web.Design.dll assembly to your target location.

Best regards,
Rumen
Progress Telerik
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Rumen
Telerik team
answered on 08 Mar 2018, 04:15 PM
Hello,

I am following up with good news that the "Error creating control Failed to create designer" issue is already fixed in version 2018.1.215.2 of Telerik ASP.NET AJAX VSExtensions 
From the Release notes -> Telerik.Web.Design.dll is not added to the Bin folder of a newly created Telerik AJAX site/app. 

To fix the problem:
  • Download the latest Telerik ASP.NET AJAX VSExtensions installation from the VS Marketplace, install it and restart your Visual Studio.
  • Or wait for the next official R2 2018 release of Telerik UI for ASP.NET AJAX, to be out in May.
  • The already provided solution for manual registration of the Telerik.Web.Design.dll in the Bin folder of the app is still applicable.


Best regards,
Rumen
Progress Telerik
Try our brand new, jQuery-free Angular components built from ground-up which deliver the business app essential building blocks - a grid component, data visualization (charts) and form elements.
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Theo
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answered on 27 Dec 2018, 01:54 PM

Okay, 

I'm trying to open an older VS ASP.NET project, that builds and runs perfectly in debug mode.

My contract has ran out, but i have no idea how to fix this, 

Help? :)

0
Attila Antal
Telerik team
answered on 28 Dec 2018, 10:15 AM
Hi Theo,

If the project uses an older version of Telerik than the one with the fix, solution would be to register the Assembly in the GAC manually as explained by Rumen, in his earlier thread in February 22nd, 2018.

To find out more about GAC and andding assemblies to it, please check out the What is the GAC and Add, Remove and View Assemblies in the GAC articles.

Kind regards,
Attila Antal
Progress Telerik
Get quickly onboarded and successful with your Telerik and/or Kendo UI products with the Virtual Classroom free technical training, available to all active customers. Learn More.
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Theo
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answered on 28 Dec 2018, 10:27 AM

Hi Attilla,

Actually i solved it myself....   i was wondering why i could debug and deploy without problems, but not change anything.

It turns out that i was missing a reference to Telerik.Web.Design that does not get set by (re)installing of version 2018.1.117.45

Hope this post helps some other poor beginner like me.

grtz,
Theo :)

0
Attila Antal
Telerik team
answered on 28 Dec 2018, 10:32 AM
Hi Theo,

I am glad the issue has been sorted out!

Also, thank you very much for sharing your findings with the community. I am sure it will be helpful!

Happy holidays!

Kind regards,
Attila Antal
Progress Telerik
Get quickly onboarded and successful with your Telerik and/or Kendo UI products with the Virtual Classroom free technical training, available to all active customers. Learn More.
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Allen
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Veteran
answered on 18 Feb 2021, 12:57 AM

I have copied all this stuff mentioned above to the bin directory and I still get this message about  not being able to create the designer.  It is amazing that this  ascx with a datasource and a single telelerik radpanelbar

will not load.  I am using release 2021.119.45.

 

 

Please help.

 

 

Here is the ascx:

 

<%@ Control Language="C#" AutoEventWireup="true" CodeBehind="~/App_Code/DocumentTypePanelBar1.ascx.cs" Inherits="DocViewer.App_Code.DocumentTypePanelBar1" %>
<%@ Register TagPrefix="telerik" Namespace="Telerik.Web.UI" Assembly="Telerik.Web.UI" %>

<div>
<asp:XmlDataSource ID="XmlDataSource1" runat="server" DataFile="~/App_Data/MenuItems.xml" XPath="/Items/Item"></asp:XmlDataSource>
    <telerik:RadPanelBar ID="RadPanelBar1" Runat="server" DataSourceID="XmlDataSource1" DataTextField="Text" DataValueField="-" DataModelID="Url"></telerik:RadPanelBar>
</div>

Here is the code-behind:

 

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using Telerik.Web.UI;
using Telerik.Web.Design;

namespace DocViewer.App_Code
{
    public partial class DocumentTypePanelBar1 :  UserControl
    {
        protected void Page_Load(object sender, EventArgs e)
        {

        }
    }
}

 

Here is the designer:

// <auto-generated>
//     This code was generated by a tool.
//
//     Changes to this file may cause incorrect behavior and will be lost if
//     the code is regenerated. 
// </auto-generated>
//------------------------------------------------------------------------------

namespace DocViewer.App_Code {
    
    
    public partial class DocumentTypePanelBar1 {
        
        /// <summary>
        /// XmlDataSource1 control.
        /// </summary>
        /// <remarks>
        /// Auto-generated field.
        /// To modify move field declaration from designer file to code-behind file.
        /// </remarks>
        protected global::System.Web.UI.WebControls.XmlDataSource XmlDataSource1;
        
        /// <summary>
        /// RadPanelBar1 control.
        /// </summary>
        /// <remarks>
        /// Auto-generated field.
        /// To modify move field declaration from designer file to code-behind file.
        /// </remarks>
        protected global::Telerik.Web.UI.RadPanelBar RadPanelBar1;
    }
}

and here is the xml that is supposed to build the menu 

<?xml version="1.0" encoding= "utf-8" ?>
  <Items Text="" />
    <Item Text="NBI Inspection Docs (10)" MenuItemId = "UnqId10_0101000" ToolTip="Click to show only NBI Inspection  (10) documents" Url=""  >
         <Item Text="All NBI Inspection Docs" MenuItemId = "UnqId0000101001" ToolTip="Click to show all NBI Inspection  documents" DocTypeKey="10" Filter="doc_type_key='10'" Url=""   /> 
         <Item Text="NBI Insp GEN" MenuItemId = "UnqId1000101010" ToolTip="Click to show only NBI Insp GEN documents" DocTypeKey="1000" Filter="doc_subtype_key='1000'" Url=""   /> 
         <Item Text="NBI Insp RPT" MenuItemId = "UnqId1010101020" ToolTip="Click to show only NBI Insp RPT documents" DocTypeKey="1010" Filter="doc_subtype_key='1010'" Url=""   /> 
         <Item Text="NBI Insp PIX" MenuItemId = "UnqId1088101088" ToolTip="Click to show only NBI Insp PIX documents" DocTypeKey="1088" Filter="doc_subtype_key='1088'" Url=""   /> 
         <Item Text="NBI Insp FRM" MenuItemId = "UnqId1099101099" ToolTip="Click to show only NBI Insp FRM documents" DocTypeKey="1099" Filter="doc_subtype_key='1099'" Url=""   /> 
     </Item>
    <Item Text="FC Sp. Insp. Docs (20)" MenuItemId = "UnqId20_0202000" ToolTip="Click to show only FC Sp. Insp.  (20) documents" Url=""  >
         <Item Text="All FC Sp. Insp. Docs" MenuItemId = "UnqId0000202001" ToolTip="Click to show all FC Sp. Insp.  documents" DocTypeKey="20" Filter="doc_type_key='20'" Url=""   /> 
         <Item Text="SPI - FC - GEN" MenuItemId = "UnqId2000202010" ToolTip="Click to show only SPI - FC - GEN documents" DocTypeKey="2000" Filter="doc_subtype_key='2000'" Url=""   /> 
         <Item Text="SPI - FC - RPT" MenuItemId = "UnqId2010202020" ToolTip="Click to show only SPI - FC - RPT documents" DocTypeKey="2010" Filter="doc_subtype_key='2010'" Url=""   /> 
         <Item Text="SPI - FC - PIX" MenuItemId = "UnqId2088202088" ToolTip="Click to show only SPI - FC - PIX documents" DocTypeKey="2088" Filter="doc_subtype_key='2088'" Url=""   /> 
         <Item Text="SPI - FC - FRM" MenuItemId = "UnqId2099202099" ToolTip="Click to show only SPI - FC - FRM documents" DocTypeKey="2099" Filter="doc_subtype_key='2099'" Url=""   /> 
     </Item>
    <Item Text="UW Sp. Insp. Docs (25)" MenuItemId = "UnqId25_0202500" ToolTip="Click to show only UW Sp. Insp.  (25) documents" Url=""  >
         <Item Text="All UW Sp. Insp. Docs" MenuItemId = "UnqId0000202501" ToolTip="Click to show all UW Sp. Insp.  documents" DocTypeKey="25" Filter="doc_type_key='25'" Url=""   /> 
         <Item Text="SPI - UW - GEN" MenuItemId = "UnqId2500202510" ToolTip="Click to show only SPI - UW - GEN documents" DocTypeKey="2500" Filter="doc_subtype_key='2500'" Url=""   /> 
         <Item Text="SPI - UW - RPT" MenuItemId = "UnqId2510202520" ToolTip="Click to show only SPI - UW - RPT documents" DocTypeKey="2510" Filter="doc_subtype_key='2510'" Url=""   /> 
         <Item Text="SPI - UW - PIX" MenuItemId = "UnqId2588202588" ToolTip="Click to show only SPI - UW - PIX documents" DocTypeKey="2588" Filter="doc_subtype_key='2588'" Url=""   /> 
         <Item Text="SPI - UW - FRM" MenuItemId = "UnqId2599202599" ToolTip="Click to show only SPI - UW - FRM documents" DocTypeKey="2599" Filter="doc_subtype_key='2599'" Url=""   /> 
     </Item>
    <Item Text="OS Sp. Insp. Docs (30)" MenuItemId = "UnqId30_0203000" ToolTip="Click to show only OS Sp. Insp.  (30) documents" Url=""  >
         <Item Text="All OS Sp. Insp. Docs" MenuItemId = "UnqId0000203001" ToolTip="Click to show all OS Sp. Insp.  documents" DocTypeKey="30" Filter="doc_type_key='30'" Url=""   /> 
         <Item Text="SPI - OS - GEN" MenuItemId = "UnqId3000203010" ToolTip="Click to show only SPI - OS - GEN documents" DocTypeKey="3000" Filter="doc_subtype_key='3000'" Url=""   /> 
         <Item Text="SPI - OS - RPT" MenuItemId = "UnqId3010203020" ToolTip="Click to show only SPI - OS - RPT documents" DocTypeKey="3010" Filter="doc_subtype_key='3010'" Url=""   /> 
         <Item Text="SPI - OS - PIX" MenuItemId = "UnqId3088203088" ToolTip="Click to show only SPI - OS - PIX documents" DocTypeKey="3088" Filter="doc_subtype_key='3088'" Url=""   /> 
         <Item Text="SPI - OS - FRM" MenuItemId = "UnqId3099203099" ToolTip="Click to show only SPI - OS - FRM documents" DocTypeKey="3099" Filter="doc_subtype_key='3099'" Url=""   /> 
     </Item>
    <Item Text="PH Sp. Insp. Docs (40)" MenuItemId = "UnqId40_0204000" ToolTip="Click to show only PH Sp. Insp.  (40) documents" Url=""  >
         <Item Text="All PH Sp. Insp. Docs" MenuItemId = "UnqId0000204001" ToolTip="Click to show all PH Sp. Insp.  documents" DocTypeKey="40" Filter="doc_type_key='40'" Url=""   /> 
         <Item Text="SPI - PH - GEN" MenuItemId = "UnqId4000204010" ToolTip="Click to show only SPI - PH - GEN documents" DocTypeKey="4000" Filter="doc_subtype_key='4000'" Url=""   /> 
         <Item Text="SPI - PH - RPT" MenuItemId = "UnqId4010204020" ToolTip="Click to show only SPI - PH - RPT documents" DocTypeKey="4010" Filter="doc_subtype_key='4010'" Url=""   /> 
         <Item Text="SPI - PH - PIX" MenuItemId = "UnqId4088204088" ToolTip="Click to show only SPI - PH - PIX documents" DocTypeKey="4088" Filter="doc_subtype_key='4088'" Url=""   /> 
         <Item Text="SPI - PH - FRM" MenuItemId = "UnqId4099204099" ToolTip="Click to show only SPI - PH - FRM documents" DocTypeKey="4099" Filter="doc_subtype_key='4099'" Url=""   /> 
     </Item>
    <Item Text="DMG Sp. Insp. Docs (45)" MenuItemId = "UnqId45_0204500" ToolTip="Click to show only DMG Sp. Insp.  (45) documents" Url=""  >
         <Item Text="All  DMG Sp. Insp. Docs" MenuItemId = "UnqId0000204501" ToolTip="Click to show all  DMG Sp. Insp.  documents" DocTypeKey="45" Filter="doc_type_key='45'" Url=""   /> 
         <Item Text="SPI - DMG - GEN" MenuItemId = "UnqId4500204510" ToolTip="Click to show only SPI - DMG - GEN documents" DocTypeKey="4500" Filter="doc_subtype_key='4500'" Url=""   /> 
         <Item Text="SPI - DMG - RPT" MenuItemId = "UnqId4510204520" ToolTip="Click to show only SPI - DMG - RPT documents" DocTypeKey="4510" Filter="doc_subtype_key='4510'" Url=""   /> 
         <Item Text="SPI - DMG - PIX" MenuItemId = "UnqId4588204588" ToolTip="Click to show only SPI - DMG - PIX documents" DocTypeKey="4588" Filter="doc_subtype_key='4588'" Url=""   /> 
         <Item Text="SPI - DMG - FRM" MenuItemId = "UnqId4599204599" ToolTip="Click to show only SPI - DMG - FRM documents" DocTypeKey="4599" Filter="doc_subtype_key='4599'" Url=""   /> 
     </Item>
    <Item Text="CIF Docs (35)" MenuItemId = "UnqId35_0253500" ToolTip="Click to show only CIF  (35) documents" Url=""  >
         <Item Text="All CIF Docs" MenuItemId = "UnqId0000253501" ToolTip="Click to show all CIF  documents" DocTypeKey="35" Filter="doc_type_key='35'" Url=""   /> 
         <Item Text="CIF - GEN" MenuItemId = "UnqId3500253520" ToolTip="Click to show only CIF - GEN documents" DocTypeKey="3500" Filter="doc_subtype_key='3500'" Url=""   /> 
         <Item Text="CIF - RPT" MenuItemId = "UnqId3510253530" ToolTip="Click to show only CIF - RPT documents" DocTypeKey="3510" Filter="doc_subtype_key='3510'" Url=""   /> 
         <Item Text="CIF - PIX" MenuItemId = "UnqId3588253588" ToolTip="Click to show only CIF - PIX documents" DocTypeKey="3588" Filter="doc_subtype_key='3588'" Url=""   /> 
         <Item Text="CIF - FRM" MenuItemId = "UnqId3599253599" ToolTip="Click to show only CIF - FRM documents" DocTypeKey="3599" Filter="doc_subtype_key='3599'" Url=""   /> 
     </Item>
    <Item Text="Scour Program Docs (50)" MenuItemId = "UnqId50_0305000" ToolTip="Click to show only Scour Program  (50) documents" Url=""  >
         <Item Text="All Scour Program Docs" MenuItemId = "UnqId0000305001" ToolTip="Click to show all Scour Program  documents" DocTypeKey="50" Filter="doc_type_key='50'" Url=""   /> 
         <Item Text="Scour - GEN" MenuItemId = "UnqId5000305010" ToolTip="Click to show only Scour - GEN documents" DocTypeKey="5000" Filter="doc_subtype_key='5000'" Url=""   /> 
         <Item Text="Scour - Smry. RPT" MenuItemId = "UnqId5010305020" ToolTip="Click to show only Scour - Smry. RPT documents" DocTypeKey="5010" Filter="doc_subtype_key='5010'" Url=""   /> 
         <Item Text="Scour - 113 RPT" MenuItemId = "UnqId5020305030" ToolTip="Click to show only Scour - 113 RPT documents" DocTypeKey="5020" Filter="doc_subtype_key='5020'" Url=""   /> 
         <Item Text="Scour - Original POAs" MenuItemId = "UnqId5030305040" ToolTip="Click to show only Scour - Original POAs documents" DocTypeKey="5030" Filter="doc_subtype_key='5030'" Url=""   /> 
         <Item Text="Scour - Amended POAs" MenuItemId = "UnqId5035305050" ToolTip="Click to show only Scour - Amended POAs documents" DocTypeKey="5035" Filter="doc_subtype_key='5035'" Url=""   /> 
         <Item Text="Scour - Retired POAs" MenuItemId = "UnqId5040305060" ToolTip="Click to show only Scour - Retired POAs documents" DocTypeKey="5040" Filter="doc_subtype_key='5040'" Url=""   /> 
         <Item Text="Scour - PIX" MenuItemId = "UnqId5088305088" ToolTip="Click to show only Scour - PIX documents" DocTypeKey="5088" Filter="doc_subtype_key='5088'" Url=""   /> 
         <Item Text="Scour - POA Original FRM" MenuItemId = "UnqId5096305096" ToolTip="Click to show only Scour - POA Original FRM documents" DocTypeKey="5096" Filter="doc_subtype_key='5096'" Url=""   /> 
         <Item Text="Scour - POA Amended FRM" MenuItemId = "UnqId5097305097" ToolTip="Click to show only Scour - POA Amended FRM documents" DocTypeKey="5097" Filter="doc_subtype_key='5097'" Url=""   /> 
         <Item Text="Scour - POA Retired FRM" MenuItemId = "UnqId5098305098" ToolTip="Click to show only Scour - POA Retired FRM documents" DocTypeKey="5098" Filter="doc_subtype_key='5098'" Url=""   /> 
         <Item Text="Scour - 113 Report FRM" MenuItemId = "UnqId5099305099" ToolTip="Click to show only Scour - 113 Report FRM documents" DocTypeKey="5099" Filter="doc_subtype_key='5099'" Url=""   /> 
     </Item>
    <Item Text="Load Rating Docs (60)" MenuItemId = "UnqId60_0406000" ToolTip="Click to show only Load Rating  (60) documents" Url=""  >
         <Item Text="All Load Rating Docs" MenuItemId = "UnqId0000406001" ToolTip="Click to show all Load Rating  documents" DocTypeKey="60" Filter="doc_type_key='60'" Url=""   /> 
         <Item Text="LR - GEN" MenuItemId = "UnqId6000406010" ToolTip="Click to show only LR - GEN documents" DocTypeKey="6000" Filter="doc_subtype_key='6000'" Url=""   /> 
         <Item Text="LR - Smry RPT" MenuItemId = "UnqId6010406020" ToolTip="Click to show only LR - Smry RPT documents" DocTypeKey="6010" Filter="doc_subtype_key='6010'" Url=""   /> 
         <Item Text="LR Field Assessments" MenuItemId = "UnqId6020406030" ToolTip="Click to show only LR Field Assessments documents" DocTypeKey="6020" Filter="doc_subtype_key='6020'" Url=""   /> 
         <Item Text="LR Plans and Other" MenuItemId = "UnqId6030406040" ToolTip="Click to show only LR Plans and Other documents" DocTypeKey="6030" Filter="doc_subtype_key='6030'" Url=""   /> 
         <Item Text="LR Bridge Models" MenuItemId = "UnqId6040406050" ToolTip="Click to show only LR Bridge Models documents" DocTypeKey="6040" Filter="doc_subtype_key='6040'" Url=""   /> 
         <Item Text="LR Bridge Data Files" MenuItemId = "UnqId6050406060" ToolTip="Click to show only LR Bridge Data Files documents" DocTypeKey="6050" Filter="doc_subtype_key='6050'" Url=""   /> 
         <Item Text="LR - PIX" MenuItemId = "UnqId6088406088" ToolTip="Click to show only LR - PIX documents" DocTypeKey="6088" Filter="doc_subtype_key='6088'" Url=""   /> 
         <Item Text="LR - FRM" MenuItemId = "UnqId6099406099" ToolTip="Click to show only LR - FRM documents" DocTypeKey="6099" Filter="doc_subtype_key='6099'" Url=""   /> 
     </Item>
    <Item Text="Existing Plans (70)" MenuItemId = "UnqId70_0507000" ToolTip="Click to show only Existing Plans (70) documents" Url=""  >
         <Item Text="All Existing Plans" MenuItemId = "UnqId0000507001" ToolTip="Click to show all Existing Plans documents" DocTypeKey="70" Filter="doc_type_key='70'" Url=""   /> 
         <Item Text="Plans - GEN" MenuItemId = "UnqId7000507010" ToolTip="Click to show only Plans - GEN documents" DocTypeKey="7000" Filter="doc_subtype_key='7000'" Url=""   /> 
         <Item Text="Plans - RPT" MenuItemId = "UnqId7010507020" ToolTip="Click to show only Plans - RPT documents" DocTypeKey="7010" Filter="doc_subtype_key='7010'" Url=""   /> 
         <Item Text="Plans - CADD Files" MenuItemId = "UnqId7020507030" ToolTip="Click to show only Plans - CADD Files documents" DocTypeKey="7020" Filter="doc_subtype_key='7020'" Url=""   /> 
         <Item Text="Plans - Scans/Other" MenuItemId = "UnqId7030507040" ToolTip="Click to show only Plans - Scans/Other documents" DocTypeKey="7030" Filter="doc_subtype_key='7030'" Url=""   /> 
         <Item Text="Plans - FRM" MenuItemId = "UnqId7099507099" ToolTip="Click to show only Plans - FRM documents" DocTypeKey="7099" Filter="doc_subtype_key='7099'" Url=""   /> 
     </Item>
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Allen
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answered on 18 Feb 2021, 04:24 PM

OK well stupidly put the control code in a .NET reserved subfolder, sorted that, and lo and behold, my xml file had a typo in the very first tag.  I believe the problem has now been resolved exactly as suggested, but this has been a recurring problem.  The designer error was ,it would now appear, actually due in part to the mal-formed XML menu items input to the RadPanelBar but it complained in an unhelpful VS exception.  

Thank yu.

0
Attila Antal
Telerik team
answered on 22 Feb 2021, 07:27 PM

Hi Allen,

I am happy to hear you've managed to resolve the problem. 

For the rest of the readers I would like to highlight that the error concerning the Desigjner can occur due to the missing assembly/reference to Telerik.Web.UI.Design.dll. 

Folow Rumen's post to troubleshoot the issuehttps://www.telerik.com/forums/telerik-designer-error-creating-control-1c25e81bdea2#u9kqq-PSvESRXsWw6WAcKw

You might as well restart Visal Studio and/or the PC, then try again.

If the issue does not resolv by referencing the correct Assembly, try clearing the Visual Studio Cache folder, see How to clear visual studio cache.

Step 1: clear the Component Cache

  1. Close Visual Studio (ensure devenv.exe is not present in the Task Manager)
  2. Delete the %USERPROFILE%\AppData\Local\Microsoft\VisualStudio\14.0\ComponentModelCache directory
  3. Restart Visual Studio.

Step 2: cleanup your user’s temp folder

  • Delete the %USERPROFILE%\AppData\Local\Temp directory.

If all the above fails. you can try the hard route.

Step 3: delete the contents from the following folders

  • %USERPROFILE%\AppData\Local\Microsoft\Team Foundation
  • %USERPROFILE%\AppData\Local\Microsoft\VisualStudio
  • %USERPROFILE%\AppData\Local\Microsoft\VSCommon

 

Regards,
Attila Antal
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