private void DeleteStaffRecord()
        {
            var win = GetSelectedStaff();

            if (win == null || win.UserID > 0)
            {
                Message(MessageTypes.Error, "Please Select to delete Staff Detail");
                return;
            }
            if (!DeleteMessage())
            {
                return;
            }

            EducationRepo.Remove(win.UserID);
            ExperienceRepo.Remove(win.UserID);
            UserRepo.Remove(win.UserID);
            UserDetailRepo.Remove(win.UserID);
        }