private void BtnImprimir_Click(object sender, EventArgs e) { try { var arquivoXml = Helpers.OpenFile("Arquivo Xml NFe (*.xml)|*.xml|Todos os Arquivos (*.*)|*.*"); if (string.IsNullOrEmpty(arquivoXml)) { return; } var ret = AcbrNFe.NFE_LimparLista(); AcbrNFe.CheckResult(ret); ret = AcbrNFe.NFE_CarregarXML(arquivoXml); AcbrNFe.CheckResult(ret); ret = AcbrNFe.NFE_Imprimir("", 1, "", "1", "", "", ""); AcbrNFe.CheckResult(ret); } catch (Exception exception) { MessageBox.Show(exception.Message, @"Erro", MessageBoxButtons.OK, MessageBoxIcon.Error); } }