怎么读取XML指定节点下的值？

Question

<Customers>
  <User name="aaa" age="21">
    <Address>
       Shanghai
    </Address>
    <Technology>
       C#
    </Technology>
  </User>
  <User name="bbb" age="22">
    <Address>
       Zhejiang
    </Address>
    <Technology>
       javascript
    </Technology>
  </User>
  <User name="ccc" age="23">
    <Address>
       Zhejiang
    </Address>
    <Technology>
       Delphi
    </Technology>
  </User>
</Customers>请问，我如果要获取 name="bbb" 的节点下面的 Address节点的值zhejiang，C#应该怎么写呢？

Answer 1

      System.Xml.XmlNode xn = xd.SelectSingleNode("User/[@name='ccc']/Address");
  if (xn != null)
                return xn.Attributes["Source"].Value;

Answer 2

        string xmlStr = "....";
        XmlDocument xd = new XmlDocument();
        xd.LoadXml(xmlStr);
        XmlNodeList xnlUser = xd.SelectNodes("Customers/User");
        string bAddress = "";
        foreach(XmlNode xnUser in xnlUser)
        {
            if(xnUser.Attributes["name"].Value == "bbb")
            {
                bAddress = xnUser.SelectSingleNode("Address").InnerText;
                break;
            }
        }

Answer 3

void Main()
{
   string xml = @"<Customers>
  <User name=""aaa"" age=""21"">
<Address>
   Shanghai
</Address>
<Technology>
   C#
</Technology>
  </User>
  <User name=""bbb"" age=""22"">
<Address>
   Zhejiang
</Address>
<Technology>
   javascript
</Technology>
  </User>
  <User name=""ccc"" age=""23"">
<Address>
   Zhejiang
</Address>
<Technology>
   Delphi
</Technology>
  </User>
</Customers>";
XElement xmlPage = XElement.Parse(xml);
var q = from x in xmlPage.Descendants("User")
where x.Attribute("name").Value == "bbb"
select x.Element("Address").Value;
q.ToList().ForEach(l=>Console.WriteLine(l));
}/*
 Zhejiang
*/

Answer 4

            string xml = @"<Customers>
  <User name=""aaa"" age=""21"">
  <Address>
  Shanghai
  </Address>
  <Technology>
  C#
  </Technology>
  </User>
  <User name=""bbb"" age=""22"">
  <Address>
  Zhejiang
  </Address>
  <Technology>
  javascript
  </Technology>
  </User>
  <User name=""ccc"" age=""23"">
  <Address>
  Zhejiang
  </Address>
  <Technology>
  Delphi
  </Technology>
  </User>
</Customers>";
            XDocument Doc = XDocument.Parse(xml);
            var query = Doc.Descendants("User").Where(x => x.Attribute("name").Value == "bbb").Select(x => x.Element("Address").Value);
            foreach (var v in query)
            {
                Console.WriteLine(v.ToString());

Answer 5

可以根据xml path 来直接获取
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