Converting site from 1.1 to 2.0 receiving element not known error.

Question

We are finally converting our site to .NET 2.0 and I'm having problems with the conversion. I've got a class that was created and inherited from System.Web.UI.HtmlControls.HtmlTextArea. I'm trying to use this as a control on another usercontrol defined as follows:

<technicolor:PixelTextArea disabled="true" id="errorText" class="<%# errClassType %>" CharWidth="6" CharHeight="14" runat="server"></technicolor:PixelTextArea>

So the error that I'm seeing is that PixelTextArea is not a known element. This class is in the APP_Code directory and the control that I'm adding it to is a user control in another directory outside of that.

Any ideas how I fix this?

Jerry Blum · Answer

Thanks.

Nico VanHaaster · Answer

Yeah i would just create a new custom control and set the inheritance to whatever you like just replace after : public partial class newcontrol : System...... whatever you like it to enherit

Jerry Blum · Answer

The fact that PixelTextArea is just a .cs file is what I believe is causing the problem. Is there a way to make it work as is or create a new control(.ascx) that inherits from System.Web.UI.HTMLControls.HtmlTextArea?

Nico VanHaaster · Answer

Your register tag is registering a file in the App_code directory which is a cs file you need to reference the path of the actual ascx file Like this below

Jerry Blum · Answer

I've tried to add the register statement as follows but it still doesn't work. [code] [code] Like I said before this is a class in a .cs file that is inherited from System.Web.UI.HtmlControls.HtmlTextArea and is in App_Code directory. The file that I added the code above to is a user control with an ascx file and .cs file. Is this something that I will need to rebuild a userControl to handle or should I be able to use this as is? Hopefully somebody will be able to help.

Nico VanHaaster · Answer

Two things here one it sounds like you your controls in the correct place. The code in the App_Code folder etc. Now have you referenced this control in your web.config or at the top of the page with the tag? To use a custom control inside of .Net it needs to know where to find it. This will include the virtual path to the control ie ~/Controls/Customcontrol.asax. Example http://weblogs.asp.net/scottgu/archive/2006/11/26/tip-trick-how-to-register-user-controls-and-custom-controls-in-web-config.aspx