如何在C＃中创建XML

我需要创建一个XML并将其作为字符串返回。 谁能告诉我如何使用XmlDocument创建以下XML？

UPDATE

 var xmlDocument = new XmlDocument(); var xmlNode=xmlDocument.CreateNode(XmlNodeType.XmlDeclaration,"outputs","namespace"); xmlDocument.AppendChild(xmlNode); var xmlElement = xmlDocument.CreateElement("", "output", ""); xmlDocument.AppendChild(xmlElement); 

Answer 1

 //Create XmlDocument XmlDocument xmlDoc = new XmlDocument(); //Create the root element XmlNode outputsElement = xmlDoc.CreateElement("outputs"); //Create the child element XmlElement Element = xmlDoc.CreateElement("output"); //Create "name" Attribute XmlAttribute nameAtt = xmldoc.CreateAttribute("name"); Element.Attributes.Append(nameAtt); //Create "value" Attribute XmlAttribute valueAtt = xmldoc.CreateAttribute("value"); Element.Attributes.Append(valueAtt); //Create "type" Attribute XmlAttribute typeAtt = xmldoc.CreateAttribute("type"); Element.Attributes.Append(typeAtt); //Append child element into root element outputsElement.AppendChild(Element); 

并将其作为字符串返回：xmldoc.OuterXml;

Answer 2

我认为你应该考虑使用XDocument而不是XmlDocument ：

 var doc = new XDocument(new XElement("outputs", new XElement("output", new XAttribute("name", ""), new XAttribute("value", ""), new XAttribute("type", "")), new XElement("output", new XAttribute("name", ""), new XAttribute("value", ""), new XAttribute("type", "")), new XElement("output", new XAttribute("name", ""), new XAttribute("value", ""), new XAttribute("type", "")))); 

您可以轻松地将xml写入字符串：

 var myXmlString = doc.ToString(); 

您还可以使用XDocument.Parse()静态方法实现相同的目标：

 var doc = XDocument.Parse("
 (...) "); 

您也可以使用循环添加内容：

 var doc = new XDocument(new XElement("outputs")); var root = doc.Root; foreach(var o in outputs) { root.Add(new XElement("output", new XAttribute("name", o.Name), new XAttribute("value", o.Value), new XAttribute("type", o.Type))); } 

Answer 3

  string str = "
"; XmlDocument doc = new XmlDocument(); doc.LoadXml(str); 

并再次创建一个字符串。

  string toString = string.Empty; using (StringWriter stringWriter = new StringWriter()) { XmlTextWriter xmlTextWriter = new XmlTextWriter(stringWriter); doc.WriteTo(xmlTextWriter); toString = stringWriter.ToString(); } 

Answer 4

这对你有很大帮助，它是关于如何读写xml文件的一个很好的例子：

http://www.c-sharpcorner.com/UploadFile/mahesh/ReadWriteXMLTutMellli2111282005041517AM/ReadWriteXMLTutMellli21.aspx

有关如何使用c＃代码创建元素和整个XML文件的示例代码：

  static void Main(string[] args) { // Create a new file in C:\\ dir XmlTextWriter textWriter = new XmlTextWriter("C:\\myXmFile.xml", null); // Opens the document textWriter.WriteStartDocument(); // Write comments textWriter.WriteComment("First Comment XmlTextWriter Sample Example"); textWriter.WriteComment("myXmlFile.xml in root dir"); // Write first element textWriter.WriteStartElement("Student"); textWriter.WriteStartElement("r", "RECORD", "urn:record"); // Write next element textWriter.WriteStartElement("Name", ""); textWriter.WriteString("Student"); textWriter.WriteEndElement(); // Write one more element textWriter.WriteStartElement("Address", ""); textWriter.WriteString("Colony"); textWriter.WriteEndElement(); // WriteChars char[] ch = new char[3]; ch[0] = 'a'; ch[1] = 'r'; ch[2] = 'c'; textWriter.WriteStartElement("Char"); textWriter.WriteChars(ch, 0, ch.Length); textWriter.WriteEndElement(); // Ends the document. textWriter.WriteEndDocument(); // close writer textWriter.Close(); }