private LoadOperation <Web.Model.taxpayerdocument> LoadTaxPayerDocument() { EntityQuery <Web.Model.taxpayerdocument> lQuery = documentManagerContext.GetTaxpayerdocumentQuery(); if (SelectTaxPayerEntity != null) { lQuery = lQuery.Where(c => c.taxpayer_id == SelectTaxPayerEntity.TaxPayerId); } else { lQuery = lQuery.Where(c => c.taxpayer_id == -100); } return(documentManagerContext.Load(lQuery.SortAndPageBy(taxPayerDocumentView))); }