如何防止在asp.net中母版页上的菜单控制回发？

I have created Dynamic Menu from Database of SQLServer2008 which is loaded on page load and accordingly the menus are displayed. Problem is when i click any MenuItem of the menu from Content Page the Menu Control also loads again from the DataBase which i want to avoid the PostBack and prevent the Hit to DataBase for loading the menu.I have created Dynamic Menu from Database of SQ