private void Save() { List <TrainingProduct> lstproduct = new List <TrainingProduct>(); TrainingProductManager mgr = new TrainingProductManager(); if (Mode == "Add") { mgr.Insert(Entity, out lstproduct); Products = lstproduct; } else { mgr.Update(Entity, out lstproduct); Products = lstproduct; } ValidationErrors = mgr.ValidationErrors; if (ValidationErrors.Count > 0) { IsValid = false; } if (!IsValid) { if (Mode == "Add") { AddMode(); } else { EditMode(); } } }