操作xml（C#）

<?xml version="1.0" encoding="UTF-8"?>
<dataTable>
<node id="201603220952208053861">
<title>关于软件</title>
<type>test</type>
<addTime>2016-03-22 09:52:20</addTime>
<editTime>2016-03-22 09:52:20</editTime>
<content>产品：node
版本：1.0
作者：HUJQ</content>
</node>
<node id="201603220952563455956">
<title>test</title>
<type>测试</type>
<addTime>2016-03-22 09:52:56</addTime>
<editTime>2016-03-22 09:52:56</editTime>
<content>测试</content>
</node>
</dataTable>

public class XmlHelper
{
private XmlDocument objXmlDoc = new XmlDocument();
private string XmlFile;
public XmlHelper(string XmlFile)
{
this.XmlFile = XmlFile;
if (!File.Exists(XmlFile))
{
creatXml();
}

objXmlDoc.Load(XmlFile);
}

#region 创建xml文件
private void creatXml()
{
//加入XML的声明段落,<?xml version="1.0" encoding="UTF-8"?>
XmlDeclaration xmldecl = objXmlDoc.CreateXmlDeclaration("1.0", "UTF-8", null);
//添加上述创建和 xml声明节点
objXmlDoc.AppendChild(xmldecl);
//创建xml dbGuest 元素（根节点）
XmlElement xmlelem = objXmlDoc.CreateElement("", "dataTable", "");
objXmlDoc.AppendChild(xmlelem);
try
{
objXmlDoc.Save(XmlFile);
}
catch (Exception ex) { }

Node node = new Node()
{
id = getID(),
title = "关于软件",
type = "test",
addTime = getDateString(),
editTime = getDateString(),
content = "产品：node\n版本：1.0\n作者：HUJQ"
};
addXml(node);
}
#endregion

#region 读xml文件
public List<Node> readXml()
{
List<Node> nodeList = new List<Node>();
XmlNode root = objXmlDoc.SelectSingleNode("dataTable");// 得到根节点
XmlNodeList xmlNodeList = root.ChildNodes;// 得到根节点的所有子节点
foreach (XmlNode xnl in xmlNodeList)
{
Node node = new Node();
// 将节点转换为元素，便于得到节点的属性值
XmlElement xe = (XmlElement)xnl;
// 得到id属性的属性值
node.id = xe.GetAttribute("id");
node.title = xe.GetElementsByTagName("title")[0].InnerText;
node.type = xe.GetElementsByTagName("type")[0].InnerText;
node.addTime = xe.GetElementsByTagName("addTime")[0].InnerText;
node.editTime = xe.GetElementsByTagName("editTime")[0].InnerText;
node.content = xe.GetElementsByTagName("content")[0].InnerText;
nodeList.Add(node);
}
return nodeList;
}
#endregion

#region 添加xml
public void addXml(Node node)
{
XmlNode root = objXmlDoc.SelectSingleNode("dataTable");
XmlElement xe1 = objXmlDoc.CreateElement("node");//创建一个<Node>节点
xe1.SetAttribute("id", node.id);//设置该节点genre属性

XmlElement xesub1 = objXmlDoc.CreateElement("title");
xesub1.InnerText = node.title;//设置文本节点
xe1.AppendChild(xesub1);//添加到<Node>节点中

XmlElement xesub2 = objXmlDoc.CreateElement("type");
xesub2.InnerText = node.type;
xe1.AppendChild(xesub2);

XmlElement xesub3 = objXmlDoc.CreateElement("addTime");
xesub3.InnerText = node.addTime;
xe1.AppendChild(xesub3);

XmlElement xesub4 = objXmlDoc.CreateElement("editTime");
xesub4.InnerText = node.editTime;
xe1.AppendChild(xesub4);

XmlElement xesub5 = objXmlDoc.CreateElement("content");
xesub5.InnerText = node.content;
xe1.AppendChild(xesub5);

root.AppendChild(xe1);//添加到<Employees>节点中

//保存创建好的XML文档
objXmlDoc.Save(XmlFile);
}
#endregion

#region 删除xml
public void delXml(string id)
{
XmlNodeList xmlNodeList = objXmlDoc.SelectSingleNode("dataTable").ChildNodes;
foreach (XmlNode xn in xmlNodeList)//遍历所有子节点
{
XmlElement xe = (XmlElement)xn;//将子节点类型转换为aXmlElement类型
if (xe.GetAttribute("id") == id)
{
xe.ParentNode.RemoveChild(xe);
}
}
objXmlDoc.Save(XmlFile);
}
#endregion

#region 修改xml
public void edidXml(Node node)
{
XmlNodeList xmlNodeList = objXmlDoc.SelectSingleNode("dataTable").ChildNodes;//获取dbGuest节点的所有子节点
foreach (XmlNode xn in xmlNodeList)//遍历所有子节点
{
XmlElement xe = (XmlElement)xn;//将子节点类型转换为aXmlElement类型
if (xe.GetAttribute("id") == node.id)
{
xe.GetElementsByTagName("title")[0].InnerText = node.title;
xe.GetElementsByTagName("type")[0].InnerText = node.type;
xe.GetElementsByTagName("editTime")[0].InnerText = node.editTime;
xe.GetElementsByTagName("content")[0].InnerText = node.content;
}
}
objXmlDoc.Save(XmlFile);
}
#endregion

public string getID()
{
return DateTime.Now.ToString("yyyyMMddHHmmssfffffff");
}

public string getDateString()
{
return DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss");
}
}