private void DataPortal_Fetch(Common.Business.LambdaExpression lambda) { using (var ctx = ContextManager <EFDataContext> .GetManager(Database.EFramework)) { var exp = lambda.Resolve <FI_BankTransRecords>(); var i = from p in ctx.DataContext.FI_BankTransRecords.Where(exp) select FI_BankTransRecordsFactory.Fetch(p); this.RaiseListChangedEvents = false; this.IsReadOnly = false; this.AddRange(i); this.IsReadOnly = true; this.RaiseListChangedEvents = true; } }