public static void Main() {
XmlDocument doc = new XmlDocument();
XmlDeclaration xmlDeclaration = doc.CreateXmlDeclaration("1.0", "UTF-8", null);
doc.AppendChild(xmlDeclaration);
XmlNode report = doc.CreateElement("report");
XmlNode reportid = doc.CreateElement("report_id");
reportid.AppendChild(doc.CreateTextNode("10"));
report.AppendChild(reportid);
XmlNode an = doc.CreateElement("acession_number");
an.AppendChild(doc.CreateTextNode("9999"));
XmlNode patient_id = doc.CreateElement("patient_id");
patient_id.AppendChild(doc.CreateTextNode("31211"));
report.AppendChild(patient_id);
XmlNode patient_name = doc.CreateElement("patient_name");
patient_name.AppendChild(doc.CreateTextNode("Rômulo Cardoso da Silva"));
report.AppendChild(patient_name);
XmlNode study_date = doc.CreateElement("study_date");
study_date.AppendChild(doc.CreateTextNode("2019-03-12"));
report.AppendChild(study_date);
XmlNode study_description = doc.CreateElement("study_description");
study_description.AppendChild(doc.CreateTextNode("TC CRANIO"));
report.AppendChild(study_description);
XmlNode study_modal = doc.CreateElement("study_modal");
study_modal.AppendChild(doc.CreateTextNode("CT"));
report.AppendChild(study_modal);
XmlNode referring_physician = doc.CreateElement("referring_physician");
referring_physician.AppendChild(doc.CreateTextNode("SOLICITANTE TESTE"));
report.AppendChild(referring_physician);
XmlNode release_date = doc.CreateElement("release_date");
release_date.AppendChild(doc.CreateTextNode("2019-03-12"));
report.AppendChild(release_date);
XmlNode release_doctor = doc.CreateElement("release_doctor");
release_doctor.AppendChild(doc.CreateTextNode("MEDICO TESTE"));
report.AppendChild(release_doctor);
XmlNode crm_doctor = doc.CreateElement("crm_doctor");
crm_doctor.AppendChild(doc.CreateTextNode("11111"));
report.AppendChild(crm_doctor);
XmlNode uf_doctor = doc.CreateElement("uf_doctor");
uf_doctor.AppendChild(doc.CreateTextNode("SP"));
report.AppendChild(uf_doctor);
XmlNode report_file_path = doc.CreateElement("report_file_path");
report_file_path.AppendChild(doc.CreateTextNode("\\" + "\\rchbrsapp01\\smart\\PACS\\report\\" + "202020"+ "." +"151515" + ".pdf"));
report.AppendChild(report_file_path);
XmlNode integration_datetime = doc.CreateElement("integration_datetime");
integration_datetime.AppendChild(doc.CreateTextNode("2019-12-03 12:03:03"));
report.AppendChild(integration_datetime);
XmlNode final = doc.CreateElement("final");
final.AppendChild(doc.CreateTextNode("true"));
report.AppendChild(final);
Console.WriteLine(doc.OuterXml);