XML menu Binding from Generic List

Dear All,
we are developing project using asp.net using c sharp.i have table like this
RoleID RoleName ParentRoleID NavigateURL
   1      Intact           Null             Null
   2     User               1               Null
   3     Project            1              Null
   4     Userview         2              UserView.aspx
   5     ProjectView     3              ProjectView.aspx

and also i have method namely Public  List<Role> GetMenu() and Role class has properties are RoleID,RoleName,ParentRoleID and Naviga ...