public JsonResult AddNewRole(RoleViewModel role)
 {
     Role r = new Role()
     {
         Id = Guid.NewGuid(),
         RoleName = role.RoleName
     };
     _roleService.AddRole(r);
     _roleService.SaveChanges();
     return Json("Added");
 }
 public void AddRole(Role role)
 {
     _roleRepository.Add(role);
 }