private async void BtnMostrarListContratos_Click(object sender, RoutedEventArgs e) { try { dtgListarContrato.ItemsSource = ( from contr in mane.ListarContratos() select new { Numero = contr.Number, Creacion = contr.Creation, Termino = contr.End, RutCliente = contr.Client, IdModalidad = contr.Mod, IdTipoEvento = contr.EvType, FechaHoraInicio = contr.Start, FechaHoraTermino = contr.Finish, Asistentes = contr.Assist, PersonalAdicional = contr.Additional, Realizado = contr.Realized, ValorTotalContrato = contr.Total, Observaciones = contr.Observation }).ToList(); } catch (Exception zz) { await this.ShowMessageAsync("Error", string.Format( "No se ha encontrado contratos")); } }