Generation of designer file failed: Unknown server tag 'W3b:Form'

[NewsBot]

I've got a class which inherits System.Web.UI.Form (and a few other control classes) in a separate assembly.

 

When my Web Application references the assembly (and I add the reference to Web.config under ) most of the controls in the assembly show up in the HTML/ASP.NET Intellisense window. But some of the controls (including my custom form control) don't.

 

Furthermore, when I type them in by hand the IDE doesn't recognise them and spits out:

 

Warning*** 1*** Generation of designer file failed: Unknown server tag 'W3b:Form'.*** Z:\proj\Foo\Default.aspx*** 16*** 0*** W3b.Foo.Web

 

I've rebuilt everything several times, ensured all the attributes are fine, and restarted the IDE even more times, all to no help.

 

Any ideas?

 

 

More...

 

View All Our Microsoft Related Feeds