xml

一：如果不想有转意 则用CDATA  <name><![CDATA[张三<李四>王五<99>]]></name>

 

  1 #region 通过编程方式实现xml写入

  2             ////1.在内存中构建一个Dom对象

  3             //XmlDocument xmlDoc = new XmlDocument();

  4             //XmlDeclaration xmlDec = xmlDoc.CreateXmlDeclaration("1.0", "utf-8", null);

  5             //xmlDoc.AppendChild(xmlDec);

  6             ////2.为文档增加一个根元素

  7             //XmlElement xmlRoot = xmlDoc.CreateElement("school");

  8             //xmlDoc.AppendChild(xmlRoot);

  9             ////3.为根源素里面增加子元素，接下来将子元素添加到Root

 10             //XmlElement xmlClass = xmlDoc.CreateElement("class");

 11             //XmlAttribute xmlAttr = xmlDoc.CreateAttribute("id");

 12             //xmlAttr.Value = "c01";

 13             //xmlClass.Attributes.Append(xmlAttr);

 14             //xmlRoot.AppendChild(xmlClass);

 15             ////4.class元素创建一个student节点

 16             //XmlElement xmlStudentElement = xmlDoc.CreateElement("student");

 17             //XmlAttribute sttrSid = xmlDoc.CreateAttribute("sid");

 18             //sttrSid.Value = "s001";

 19             //xmlClass.AppendChild(xmlStudentElement);

 20 

 21             ////5.向student节点中怎家一个name节点和age节点

 22             //XmlElement xmlNameElement = xmlDoc.CreateElement("name");

 23             //xmlNameElement.InnerText = "黄林";

 24             //xmlStudentElement.AppendChild(xmlNameElement);

 25 

 26             //XmlElement xmlAgeElement = xmlDoc.CreateElement("age");

 27             //xmlAgeElement.InnerText = "18";

 28             //xmlStudentElement.AppendChild(xmlAgeElement);

 29 

 30             ////end 将Dom对象写入到xml文件中

 31 

 32             //xmlDoc.Save("school.xml");

 33             //MessageBox.Show("ok");

 34             #endregion

 35 

 36             #region 把List集合中的内容写入到一个xml文件中,通过XmlDocument方式写入Xml文件

 37             //List<Person> list = new List<Person>();

 38             //list.Add(new Person() { Name = "黄林", Age = 19, Email = "[email protected]" });

 39             //list.Add(new Person() { Name = "许正龙", Age = 29, Email = "[email protected]" });

 40             //list.Add(new Person() { Name = "何红卫", Age = 39, Email = "[email protected]" });

 41             //list.Add(new Person() { Name = "杨硕", Age = 9, Email = "[email protected]" });

 42             ////1.创建一个Dom对象

 43             //XmlDocument xDoc = new XmlDocument();

 44             ////2.编写文档定义

 45             //XmlDeclaration xmlDec = xDoc.CreateXmlDeclaration("1.0", "utf-8", null);

 46             //xDoc.AppendChild(xmlDec);

 47 

 48             ////3.编写一个根节点

 49             //XmlElement xmlRoot = xDoc.CreateElement("List");

 50             //xDoc.AppendChild(xmlRoot);

 51 

 52             ////4循环Person节点

 53             //for (int i = 0; i < list.Count; i++) {

 54             //    XmlElement xmlPersonElement = xDoc.CreateElement("Person");

 55             //    XmlAttribute xmlAttr = xDoc.CreateAttribute("id");

 56             //    xmlAttr.Value = i.ToString();

 57             //    xmlPersonElement.Attributes.Append(xmlAttr);

 58             //    xmlRoot.AppendChild(xmlPersonElement);

 59 

 60             //    XmlElement xmlNameElement = xDoc.CreateElement("Name");

 61             //    xmlNameElement.InnerText = list[i].Name.ToString();

 62             //    xmlPersonElement.AppendChild(xmlNameElement);

 63 

 64             //    XmlElement xmlAgeElement = xDoc.CreateElement("Age");

 65             //    xmlAgeElement.InnerText = list[i].Age.ToString();

 66             //    xmlPersonElement.AppendChild(xmlAgeElement);

 67 

 68             //    XmlElement xmlEmailElement = xDoc.CreateElement("Email");

 69             //    xmlEmailElement.InnerText = list[i].Email.ToString();

 70             //    xmlPersonElement.AppendChild(xmlEmailElement);

 71             //}

 72             //xDoc.Save("student.xml");

 73             //MessageBox.Show("OK");

 74 

 75             #endregion

 76 

 77 

 78             #region 通过XDocument方式写入Xml文件

 79 

 80             List<Person> list = new List<Person>();

 81             list.Add(new Person() { Name = "黄林", Age = 19, Email = "[email protected]" });

 82             list.Add(new Person() { Name = "许正龙", Age = 29, Email = "[email protected]" });

 83             list.Add(new Person() { Name = "何红卫", Age = 39, Email = "[email protected]" });

 84             list.Add(new Person() { Name = "杨硕", Age = 9, Email = "[email protected]" });

 85 

 86             //1.创建一个Dom对象

 87             XDocument xDoc = new XDocument();

 88             XDeclaration xDec = new XDeclaration("1.0", "utf-8", "no");

 89 

 90             //======================================================

 91             //设置xml的文档定义

 92             xDoc.Declaration = xDec;

 93             //======================================================

 94 

 95 

 96             //2.创建根节点

 97             XElement rootElement = new XElement("List");

 98             xDoc.Add(rootElement);

 99 

100 

101             //3.循环List集合创建Person节点

102             for (int i = 0; i < list.Count; i++) {

103                 //为每个Person对象创建一个Person元素

104                 XElement xElementPerson = new XElement("Person");

105                 xElementPerson.SetAttributeValue("id", (i + 1).ToString());

106 

107                 xElementPerson.SetElementValue("Name", list[i].Name);

108                 xElementPerson.SetElementValue("Age", list[i].Age);

109                 xElementPerson.SetElementValue("Email", list[i].Email);

110                 rootElement.Add(xElementPerson);

111             }

112 

113             //4.保存到文件

114             xDoc.Save("ListNew.xml");

115             MessageBox.Show("ok");

116             #endregion

通过代码写xml

 

 1 /// <summary>

 2         /// 读取xml

 3         /// </summary>

 4         /// <param name="sender"></param>

 5         /// <param name="e"></param>

 6         private void btnReadXml_Click(object sender, EventArgs e) {

 7 

 8             #region 通过XDocument将xml文件递归加载到Treeview中

 9             ////1.读取xml文件

10             //XDocument document = XDocument.Load("student.xml");

11             ////2.获取节点

12             //XElement rootElement = document.Root;

13             ////3.将xml的根元素加载到TreeView的根节点上

14             //TreeNode rootName = treeView1.Nodes.Add(rootElement.Name.ToString());

15 

16             ////4.递归加载

17             //LoadXmlToTreeView(rootElement, rootName.Nodes);

18             #endregion

19 

20             #region 通过XmlDocument将xml文件递归加载到Treeview中

21             //1加载Xml文件到对象

22             XmlDocument document = new XmlDocument();

23             document.Load("student.xml");

24             //获取根节点

25             XmlElement rootElement = document.DocumentElement;

26             TreeNode rootNode = treeView1.Nodes.Add(rootElement.Name);

27 

28             //实现递归将xml加载到TreeView中

29 

30             LoadToTreeByXmlDocument(rootElement, rootNode.Nodes);

31             #endregion

32         }

33         /// <summary>

34         /// 通过XmlDocument的方式将xml元素递归加载到TreeView上

35         /// </summary>

36         /// <param name="rootElement"></param>

37         /// <param name="treeNodeCollection"></param>

38         private void LoadToTreeByXmlDocument(XmlElement rootElement, TreeNodeCollection treeNodeCollection) {

39             foreach (XmlNode item in rootElement.ChildNodes) {

40                 // 在继续之前需要判断一下当前节点是什么类型的节点

41                 if (item.NodeType==XmlNodeType.Element) {

42                     //如果当前节点是一个元素节点，则把当前节点加载到treeView中

43                     TreeNode node = treeNodeCollection.Add(item.Name);

44                     //递归调用

45 

46                 }

47             }

48         }

49         /// <summary>

50         /// 通过XDocument的方式将xml元素递归加载到TreeView上

51         /// </summary>

52         /// <param name="rootElement"></param>

53         /// <param name="treeNodeCollection"></param>

54         private void LoadXmlToTreeView(XElement rootElement, TreeNodeCollection treeNodeCollection) {

55             //根据根元素获取所有子元素

56             foreach (XElement item in rootElement.Elements()) {

57                 if (item.Elements().Count() == 0) {

58                     //当前节点没有子节点，给当前节点 添加名字和 内容

59                     treeNodeCollection.Add(item.Name.ToString()).Nodes.Add(item.Value);

60 

61                 } else {

62                     TreeNode node = treeNodeCollection.Add(item.Name.ToString());

63                     LoadXmlToTreeView(item, node.Nodes);

64                 }

65 

66             }

67         }

通过代码读取Xml