public void AddTagOfDoc(int tagId, int documentId) { using (geekinsidekmsEntities context = new geekinsidekmsEntities()) { DocumentTag dbTagDoc = new DocumentTag { TagId = tagId, DocumentId = documentId }; try { context.AddToDocumentTags(dbTagDoc); context.SaveChanges(false); } catch (Exception e) { System.Diagnostics.Debug.WriteLine(e.InnerException.Message); } } }