I am developing a module for DNN 4.8.x.

So far, I got basic functionality coded and I was able to deploy to the site and my module is working just fine.

But I am having problems with IDE.

On my .ascx markup, it says, "Button is not a known element".

I even added the following statement. Nothing seems to working. Its kinda annoying because I am so used to Ctrl+Space, that now I am handicapped.

<%@ Register Assembly="System.Web.Extensions" Namespace="System.Web.UI" TagPrefix="asp" %>

Has anyone able to get out of this claw ??

Please help me

Mitch Sellers wrote Have you added the needed reference to your project for the assembly?

Yes..I did.I can see those libraries under the "References" in solution explorer

Carlos Rodriguez wrote Pullp: That can be tricky to diagnose.  What I would do is to add a new module and see if Intellisense works with it.  If not, you may have to repair the VS install, if it does, then you look into what references or imports you may be missing in the previous project.  Also, be warned about something that happened to me recently, since I want to learn and use as many hot-keys as possible, I used Ctrl+Shift+L (which deletes the line at the cursor very quickly without warning) instead of what I really meant, Ctrl+Alt+L for the Solution Explorer.  I didn't even notice the missing line until I compiled the module the next time. Sorry can't be more specific. Carlos

Carlos..I tried your suggestion.

TO my Solution, I have added another Module project and there Intellisense seems to be working fine,

The only difference between the two projects is, in my original project I am also using "AjaxControlToolkit". So I guess, something is screwin up there.