利用XmlDocument读取XML文件

利用XmlDocument可以方便的读取XML文件。

（1）添加对System.Xml的引用，并使用using语句添加引用；

（2）假设要读取的XML文件如下：

<?xml version="1.0" encoding="utf-8" ?>
<Student>
 <Name>张三</Name>
 <Age>20</Age>
 <Hobby>唱歌</Hobby>
  <Weight>50</Weight>
 <Name>李四</Name>
 <Age>22</Age>
 <Hobby>游泳</Hobby>
  <Weight>53</Weight>
  <Name>王五</Name>
  <Age>23</Age>
  <Hobby>跳舞</Hobby>
  <Weight>56</Weight>
</Student>

（3）编写程序，读取文件：

            XmlDocument myXml = new XmlDocument();
            myXml.Load("Student.xml"); //读取指定的XML文档
            XmlNode student = myXml.DocumentElement;//读取XML的根节点

            foreach (XmlNode node in student.ChildNodes)// 对子节点进行循环
            {
                //将每个节点的内容显示出来
                switch (node.Name)
                {
                    case "Name":
                        Console.WriteLine("姓名:{0}",node.InnerText);
                        break;
                    case "Age":
                        Console.WriteLine("年龄:{0}", node.InnerText);
                        break;
                    case "Hobby":
                        Console.WriteLine("爱好:{0}", node.InnerText);
                        break;
                    case "Weight":
                        Console.WriteLine("体重:{0}", node.InnerText);
                        break;
                }
            }