private async void AtualizaDataSourcePesquisaAsync() { using (var oDB = new CBanco.CBancoClient()) { if (toolStripComboBox1.SelectedItem!=null && toolStripTextBox1.Text != "") { bancoBindingSource.DataSource = await oDB.SelecionarTodosCriterioAsync(toolStripTextBox1.Text, toolStripComboBox1.SelectedItem.ToString()); } if (toolStripTextBox1.Text == "") { AtualizaDataSourceAsync(); } } }