public static void Create(Libro a) { using (DBBIBLIOTECAEntities db = new DBBIBLIOTECAEntities()) { using (var transaction = db.Database.BeginTransaction()) { try { db.Libroes.Add(a); db.SaveChanges(); transaction.Commit(); } catch (Exception ex) { transaction.Rollback(); throw ex; } } } }
public static void Delete(int?id) { using (DBBIBLIOTECAEntities db = new DBBIBLIOTECAEntities()) { using (var transaction = db.Database.BeginTransaction()) { try { Libro libro = db.Libroes.Find(id); db.Entry(libro).State = System.Data.Entity.EntityState.Deleted; db.SaveChanges(); transaction.Commit(); } catch (Exception ex) { transaction.Rollback(); throw ex; } } } }
public static void Update(Libro libro) { using (DBBIBLIOTECAEntities db = new DBBIBLIOTECAEntities()) { using (var transaction = db.Database.BeginTransaction()) { try { db.Libroes.Attach(libro); db.Entry(libro).State = System.Data.Entity.EntityState.Modified; db.SaveChanges(); transaction.Commit(); } catch (Exception ex) { transaction.Rollback(); throw ex; } } } }