[XML] 解析笔记

XElement xmlTree1 = new XElement("Root",
  new XElement("Child1", 1),
  new XElement("Child2", 2),
  new XElement("Child3", 3),
  new XElement("Child4", 4),
  new XElement("Child5", 5),
  new XElement("Child6", 6)
);
Console.WriteLine(xmlTree1);

XElement xmlTree2 = new XElement("Root",
  from el in xmlTree1.Elements()
  where ((int)el >= 3 && (int)el <= 5)
  select el
);
Console.WriteLine(xmlTree2);

XElement xmlTree3 = new XElement("Root",
 xmlTree1.Elements().Where(el=>(int)el >=3 && (int)el<=5));
 Console.WriteLine(xmlTree3);

  public static T GetXmlValue<T>(XElement element, string name, T defaultValue, Func<string, T> trans)
  {
    XAttribute attribute = element.Attribute(name);
    if (attribute == null)
    {
      return defaultValue;
    }
    try
    {
      return trans(attribute.Value);
    }
    catch
    {
      return defaultValue;
    }
  }

    XElement xElement = XElement.Load(xmlFileName);