三個類将同樣的xml内容寫入文檔,介紹了如何使用XmlDocument類對XML進行操作,以及如何使用LINQ to XML對XML進行操作。
它們分别使用了XmlDocument類和XDocument類。
在本文中,我再介紹一個類,XmlTextWriter。我們分别用這三個類将同樣的xml内容寫入文檔,看一看哪種寫法最直覺、簡便。
我們要寫入的XML文檔内容為
代碼如下:
<?xml version="1.0" encoding="UTF-8"?>
<Contacts>
<Contact id="01">
<Name>Daisy Abbey</Name>
<Gender>female</Gender>
</Contact>
</Contacts>
(1)使用XmlDocument類:
代碼如下:
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類:
代碼如下:
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類:
代碼如下:
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)來構造
// encoding預設為 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 </contact>
xmlWriter.WriteEndElement();
// close contacts </contact>
xmlWriter.WriteEndElement();
xmlWriter.WriteEndDocument();
xmlWriter.Close();