Add user controls without registering in a page

this in user page

 <asp:PlaceHolder ID="placeholderuc" runat="server"></asp:PlaceHolder>


This is in code of user page 
 IndividualPolicy.Controls.ucAdminMenu menuadmin;

                menuadmin = (IndividualPolicy.Controls.ucAdminMenu)LoadControl(Get_UC_Admin_Menu());
                placeholderuc.Controls.Add(menuadmin);


Control Design
<%@ Control Language="C#" AutoEventWireup="true" CodeBehind="ucAdminMenu.ascx.cs"
    Inherits="IndividualPolicy.Controls.ucAdminMenu" ClassName="ucAdminMenu" %>