Error with ckfinder fo asp.net
<p>i want a file manager for select image from host and prevent user from upload extra images.
i found ckfinder but i get error when i wanted to build project.
i didnt change anything i just copied CKFinder folder to my project, and pressed Build button</p>

<p>Error   15  The type or namespace name 'Design' does not exist in the namespace 'System.Web.UI' (are you missing an assembly reference?)    C:\Users\RahaDesign\documents\visual studio 2010\Projects\Test\ckfinder_source\FileBrowserDesigner.cs  20  51  Test</p>
