public void Index()
        {
            bindRoleRankLink();

            List <SiteRole> adminRoles  = roleService.GetAdminRoles();
            List <SiteRole> normalRoles = roleService.GetNormalRoles();
            List <SiteRank> ranks       = roleService.GetRankAll();

            bindAdminRoles(adminRoles);
            bindNormalRoles(normalRoles);
            bindRankList(ranks);
        }