Question: I have a QuestionControl.ascx and a QuestionControl.ascx.cs code behind file I copied to a new project. When I build the project any references in the code behind file to controls declared in the ascx gives me this error:

> 
> 'QuestionControl' does not contain a
>  definition for 'rdbtnlstQuestion1' and
>  no extension method
>  'rdbtnlstQuestion1' accepting a first
>  argument of type 'QuestionControl'
>  could be found (are you missing a
>  using directive or an assembly
>  reference?)
> 
> 
> 

This is at the top of my \*.ascx:

```
<%@ Control Language="C#" AutoEventWireup="true" CodeFile="QuestionControl.ascx.cs" Inherits="QuestionControl" %>

```

I've also tried CodeBehind:

```
<%@ Control Language="C#" AutoEventWireup="true" CodeBehind="QuestionControl.ascx.cs" Inherits="QuestionControl" %>

```

This is the top of my class in the codebehind file, it is not contained in a namespace:

```
public partial class QuestionControl : System.Web.UI.UserControl
{

```

Answer: 
Try deleting your designer file. VS.NET should recreate it for you when you open the ascx file. I've had problems like this in the past where the designer gets out-of-sync for some reason, and deleting it usually fixes the problem.
What worked form me was listed on another SO answer and I can't find it so I'm repeating it here.

Try deleting your "ReflectedSchemas" folder in 

C:\Users\YOURUSENAME\AppData\Roaming\Microsoft\VisualStudio\15.0\_079f391b\ReflectedSchemas

This worked for me. Sometimes I get the "unrecognized" errors, and I delete this folder again. Many thanks to the OP. Been driving me crazy for years. Now I have no "squiggles" in the HTML and no "red bars" in the code behind (aspx.cs)