/// <summary>
        /// 获取权限列表
        /// </summary>
        /// <param name="fields"></param>
        /// <param name="whereCondition"></param>
        /// <param name="startIndex"></param>
        /// <param name="pageSize"></param>
        /// <returns></returns>
        public List <PermissionInfo> GetPermissionInfoPageList(string fields, string whereCondition, int startIndex, int pageSize)
        {
            List <PermissionInfo> list  = new List <PermissionInfo>();
            IDbConnection         conn  = null;
            IDbCommand            cmd   = null;
            IDbTransaction        trans = null;

            try
            {
                IPermission dp = DataProvider.DbPermissionDP;
                conn = DbConnOperation.CreateMySqlConnection();
                cmd  = conn.CreateCommand();
                conn.Open();
                trans           = conn.BeginTransaction();
                cmd.Transaction = trans;
                list            = dp.GetPermissionInfoPageList(cmd, fields, whereCondition, startIndex, pageSize);
                trans.Commit();
            }
            catch (Exception ex)
            {
                if (trans != null)
                {
                    trans.Rollback();
                }
                log.Error(string.Format("GetPermissionInfoPageList()出错,错误信息如下:{0}", ex.Message));
            }
            finally
            {
                if (conn != null)
                {
                    conn.Close();
                }
            }
            return(list);
        }