Please help me to create a menu with your linq as

Question

I need to do a multi-level menu like of http://www.c-sharpcorner.com by linq technology please help me I have written ado with sql server, but I can not write, how to switchlinq technology please see my pictures after
http://nt5.upanh.com/b3.s34.d4/05cc362f4bf8c1bee44d09afdd19746d_52123255.untitled.png