public string insert_L(object o)
        {
            string s = string.Empty;

            model.mytest_L MDmytest = new model.mytest_L();
            model.pbxdatasourceDataContext context = (model.pbxdatasourceDataContext)o;
            ///model.pbxdatasourceDataContext context = new model.pbxdatasourceDataContext();



            var p = (from c in context.apiOrder where c.orderId == "212" select c).FirstOrDefault().def3;

            try
            {
                MDmytest.uname = "张三";
                MDmytest.upwd  = "123456";
                MDmytest.usex  = "男";

                context.mytest_L.InsertOnSubmit(MDmytest);
                context.SubmitChanges();
                s = "添加成功";
            }
            catch (Exception ex)
            {
                s = "添加失败(" + ex.Message + ")";
            }
            return(s);
        }
        public string delete_L(object o)
        {
            model.pbxdatasourceDataContext context1 = (model.pbxdatasourceDataContext)o;
            string s = string.Empty;

            model.mytest_L MDmytest = new model.mytest_L();
            //model.pbxdatasourceDataContext context1 = new model.pbxdatasourceDataContext();

            try
            {
                MDmytest = (from c in context1.mytest_L where c.id == 22 select c).SingleOrDefault();
                context1.mytest_L.DeleteOnSubmit(MDmytest);
                context1.SubmitChanges();

                s = "删除成功";
            }catch (Exception ex)
            {
                s = "删除失败(" + ex.Message + ")";
            }

            return(s);
        }