导入命名空间：
VS需要在项目中添加引用system.XML; 代码中添加 using System.XML和using System.IO;
XML范例：
<?xml version="1.0" encoding="UTF-8"?>
<MSG>
<HEADINFO>
<TYPE>ValidFlight</TYPE>
</HEADINFO>
<ValidFlight>
<Flight>
<Runway></Runway>
<Stand></Stand>
<FlightID></FlightID>
</Flight>
<Flight>
<Runway></Runway>
<FlightID></FlightID>
</Flight>
</ValidFlight>
</MSG>
XML解析：
方法一：
XmlNode rootNode = XDoc.SelectSingleNode("/MSG/ValidFlight");
foreach (XmlNode Xnode in rootNode.ChildNodes)
{
int FlightId = Convert.ToInt32(Xnode.SelectSingleNode("FlightID").InnerText);
string RunWay = Xnode.SelectSingleNode("Runway") == null ? null : Xnode.SelectSingleNode("Runway").InnerText;
string Stand = Xnode.SelectSingleNode("Stand") == null ? null : Xnode.SelectSingleNode("Stand").InnerText;
}
方法二：
XmlNode nodelist= XDoc.SelectSingleNode("MSG/ValidFlight");
foreach (XmlNode Xnode in nodelist)
{
int FlightId = Convert.ToInt32(Xnode["FlightID"].InnerText);
string RunWay = Xnode["Runway"]== null ? null : Xnode.Xnode["Runway"].InnerText;
string Stand = Xnode["Stand"] == null ? null :Xnode["Stand"].InnerText;
}
XML创建
XmlDocument xmlDoc = new XmlDocument();
//创建根节点
xmlDoc.LoadXml("<?xml version = '1.0' encoding='UTF-8'?><MSG></MSG>");
XmlElement root = xmlDoc.DocumentElement;
//创建一级节点
XmlElement flight = xmlDoc.CreateElement("flight");
//创建第二级节点
XmlElement flightPlan = xmlDoc.CreateElement("flightPlan");
XmlElement fpid = xmlDoc.CreateElement("fpid");
fpid.InnerText = ;
flightPlan.AppendChild(fpid);
//创建第二个节点
XmlElement fpflag = xmlDoc.CreateElement("fpflag");
fpflag.InnerText = ;
fpflag.SetAttribute("name","fpflag");
flightPlan.AppendChild(fpflag);
flight.AppendChild(flightPlan);
root.AppendChild(flight);
XML格式化
private static string formatXml(XmlDocument xml)
{
XmlDocument xd = xml as XmlDocument;
StringBuilder sb = new StringBuilder();
StringWriter sw = new StringWriter(sb);
XmlTextWriter xtw = null;
try
{
xtw = new XmlTextWriter(sw);
xtw.Formatting = Formatting.Indented;
xtw.Indentation = ;
xtw.IndentChar = '\t';
xd.WriteTo(xtw);
}
finally
{
if (xtw == null)
xtw.Close();
}
return sb.ToString();
}