Fetch 别名查找

   if (PlanClass.Attributes.Contains("new_excelcolor_avg"))

                                    {

                                        ClassColorNum = ((AliasedValue)PlanClass["new_excelcolor_avg"]).Value.ToString();

                                    }

 

 

 

  private EntityCollection GetPlanClassesCollection(OrganizationServiceProxy organizationServiceProxy, string CenterGuid, DateTime RetrieveDate)

        {

            //返回值

            EntityCollection PlanClassCollection = null;

            try

            {

                string PlanClassQuery = "<fetch version='1.0' output-format='xml-platform' mapping='logical' distinct='false'>" +

                                                      "<entity name='new_planclass'>" +

                                                        "<attribute name='new_name' />" +

                                                        "<attribute name='new_planclassid' />" +

                                                        "<attribute name='new_course' />" +

                                                        "<attribute name='new_begintime' />" +

                                                        "<attribute name='new_classroom' />" +

                                                        "<attribute name='new_endtime' />" +

                                                        "<attribute name='createdon' />" +

                                                        "<attribute name='statecode' />" +

                                                        "<attribute name='new_subject' />" +

                                                        "<attribute name='new_maxnum' />" +

                                                        "<attribute name='new_coursetype' />" +

                                                        "<attribute name='new_chineseteacher' />" +

                                                        "<attribute name='ownerid' />" +

                                                        "<attribute name='new_ordernum' />" +

                                                        "<attribute name='new_ordermember' />" +

                                                        "<order attribute='new_name' descending='false' />" +

                                                        "<filter type='and'>" +

                                                          "<condition attribute='new_center' operator='eq' value='" + CenterGuid + "' />" +

                                                          "<condition attribute='new_begintime' operator='on' value='" + RetrieveDate.ToString() + "' />" +

                                                        "</filter>" +

                                                        "<link-entity name='new_kidsclassroom' from='new_kidsclassroomid' to='new_classroom' visible='false' link-type='outer'>" +

                                                          "<attribute name='new_shortname' alias='new_shortname_avg'/>" +

                                                        "</link-entity>" +

                                                        "<link-entity name='new_course' from='new_courseid' to='new_course' visible='false' link-type='outer'>" +

                                                          "<attribute name='new_excelcolor' alias='new_excelcolor_avg'/>" +

                                                          "<attribute name='new_courseshortname' alias='new_courseshortname_avg'/>" +

                                                        "</link-entity>" +

                                                      "</entity>" +

                                                    "</fetch>";

                PlanClassCollection = organizationServiceProxy.RetrieveMultiple(new FetchExpression(PlanClassQuery));

            }

            catch (Exception ex)

            {

                PlanClassCollection = null;

            }

            return PlanClassCollection;

        }