c# 4.0 - Scope of extension methods -

i have ran strange problem regarding c# extension methods

i have 2 projects in solution have database layer call project.domain contains ef context etc , webui layer contains controllers etc.

this simple structure of tables

public class menu {     public int menuid { get; set; }     public bool isactive { get; set; }     public icollection<menumember> menumembers { get; set; } }  public  class menumember {     public int menumemberid { get; set; }     public int menuid { get; set; }     public string  viewroute { get; set; }     public bool isactive{ get; set; } }  public  class efdbcontext : dbcontext {      public dbset<page> pages { get; set; }    public dbset<menu > menus { get; set; }    public dbset<menumember> menumembers{ get; set; } } 

i want place extension methods on dbset<pages> .

i plan use in web ui layer . no matter place extensions methods , can never see them when go repository.pages.(can't see custom extension )

please me here