我们要写入的XML文档内容为

      
        
           
       
        Daisy Abbey
            
       
        female
          
         
     

 

（1）使用XmlDocument类：

var xmlDoc = new XmlDocument(); //Create the xml declaration first xmlDoc.AppendChild(xmlDoc.CreateXmlDeclaration("1.0", "utf-8", null));//Create the root node and append into doc var el = xmlDoc.CreateElement("Contacts"); xmlDoc.AppendChild(el);// Contact XmlElement elementContact = xmlDoc.CreateElement("Contact"); XmlAttribute attrID = xmlDoc.CreateAttribute("id"); attrID.Value = "01"; elementContact.Attributes.Append(attrID);el.AppendChild(elementContact);// Contact Name XmlElement elementName = xmlDoc.CreateElement("Name"); elementName.InnerText = "Daisy Abbey"; elementContact.AppendChild(elementName);// Contact Gender XmlElement elementGender = xmlDoc.CreateElement("Gender"); elementGender.InnerText = "female"; elementContact.AppendChild(elementGender);xmlDoc.Save("test1.xml");

 

（2）使用LINQ to XML 的XDocument类：

var doc = new XDocument(     new XElement("Contacts",         new XElement("Contact",             new XAttribute("id", "01"),                            new XElement("Name", "Daisy Abbey"),             new XElement("Gender", "female")         )     ) );    doc.Save("test2.xml");

 

（3） 使用XmlTextWriter类：

String filename = String.Concat("test3.xml");using (StreamWriter sw = new StreamWriter(filename)){    // Create Xml Writer.    XmlTextWriter xmlWriter = new XmlTextWriter(sw);    // 也可以使用public XmlTextWriter(string filename, Encoding encoding)来构造    // encoding默认为 UTF-8.    //XmlTextWriter writer = new XmlTextWriter("test3.xml", null);    // Set indenting so that its easier to read XML when open in Notepad and such apps.     xmlWriter.Formatting = Formatting.Indented;    // This will output the XML declaration    xmlWriter.WriteStartDocument();                    xmlWriter.WriteStartElement("Contacts");    xmlWriter.WriteStartElement("Contact");    xmlWriter.WriteAttributeString("id", "01");    xmlWriter.WriteElementString("Name", "Daisy Abbey");    xmlWriter.WriteElementString("Gender", "female");                    // close contact     xmlWriter.WriteEndElement();    // close contacts     xmlWriter.WriteEndElement();    xmlWriter.WriteEndDocument();    xmlWriter.Close();}