/// <summary>
        /// 得到人员列表
        /// </summary>
        /// <param name="roleList"></param>
        protected DataTable GetUsers(IList <Role> roleList)
        {
            DataTable     dt = new DataTable();
            int           i  = 0;
            StringBuilder sb = new StringBuilder("");

            foreach (var role in roleList)
            {
                if (i > 0)
                {
                    sb.Append(",");
                }
                sb.Append(role.ID);
                i++;
            }
            string roleIdList = sb.ToString();

            if (!string.IsNullOrEmpty(roleIdList))
            {
                dt = WorkFlows.GetSysUserByRoleIdList(roleIdList);
            }
            return(dt);
        }