ASP.net combobox not working in framework 4

[Nath]

Hi

I have an ASP.NET 3.5 web project running in a fraemewok 4.0 pool on IIS 6.  We have an old ComboBox control (RadComboBox.Net2.dll version 2.8.4.0) that seems to not render properly. 

Each individual item renders a <div> tag with the same id (the name of the control).

Is there some fancy way we can get this to render correctly - so that it works - using the web.config file or something?

 

[John]

I have a similar problem.  I am using .net 4.0  and the radcombobox has no drop down arrrow and
instead shows the word "Select" and it will not drop down and you can't type in it.  I hope we get a response soon.
Thanks.
retsamcmfj

[Dimitar Terziev]

Hi Nathan,

Could you check whether the same behavior is experienced when the application is running under default application pool ?

Regards,
Dimitar Terziev
the Telerik team

[Nath]

Sorry for the confusion.  Framework 4.0 is selected on the virtual directory for the site.  It happens regardless of what pool it is in so yes, it also happens in the default pool.

The same control works fine in an ASP.NET 4 compiled project running in IIS under framework 4.  It's only on an ASP.NET 3.5 compiled project running in IIS under framework 4 that we have the problem.

[Dimitar Terziev]

Hi Nath,

In case you are using the following (RadComboBox.Net2.dll version 2.8.4.0) version of the combobox, please check whether the problem is reproduced with the DLL attached.

In case the problem is not reproduced, please open a support ticket and we will provide the dev version, since the one attached is a trial one.

Greetings,
Dimitar Terziev
the Telerik team

[Mark Herried]

.net 4.0 does render differently.

<system.web>
       <pages controlRenderingCompatibilityVersion="3.5" clientIDMode="AutoID"/>  
 <httpRuntime requestValidationMode="2.0" />
  </system.web>

The controlRenderingCompatibilityVersion will probably fix your issue.

We had to do the requestvalidationmode for RadEditor controls.

For more information, you could visit microsofts .net 4.0 breaking changes white paper.

[Ace]

Also have the same problem. I've tried the previous solution but still not working in my project..

btw, my project is on asp.net mvc..