private async void btnOk_Click(object sender, EventArgs e) { if (string.IsNullOrEmpty(tbShopId.Text)) { lbError.Text = "Не заполнено ShopId"; return; } if (string.IsNullOrEmpty(tbShopRegion.Text)) { lbError.Text = "Не заполнено ShopRegion"; return; } var result = await MQueryCommand.TryInsertNewShopAsync(tbShopId.Text, tbShopRegion.Text); if (result.IsComplete) { DialogResult = DialogResult.OK; } else { lbError.Text = result.Message; } }