//Try类型方法
//获取属性的值
public override bool TryGetMember(GetMemberBinder binder, out object result)//binder类似于this引用。动态的
{
Console.WriteLine("获取成员");
XElement subElement = element.Element(binder.Name);
if (subElement != null)
{
result = new DynamicXElement(subElement);
return(true);
}
return(base.TryGetMember(binder, out result));
}
static void Main()
{
XDocument doc = XDocument.Load("books.xml");
dynamic root = DynamicXElement.CreateInstance(doc.Root);
Console.WriteLine(root.book[2]["name"]);
Console.WriteLine(root.book[1].author[1]);
Console.WriteLine(root.book);
Console.WriteLine("显示类的成员名：");
foreach (string item in root.GetDynamicMemberNames())
{
Console.WriteLine(item);
}
Console.ReadKey();
}
public void AccessXMLByIndexTest()
{
var xml = XDocument.Parse(
@"<School>
<Classes>
<Class>
<Lecture>Expressions</Lecture>
</Class>
<Class>
<Lecture>DynamicProgramming</Lecture>
</Class>
</Classes>
<Professor>
<Name>George</Name>
<Lesson>Math</Lesson>
</Professor>
</School>");
dynamic dynamicXML = new DynamicXElement(xml.Element("School"));
string res = dynamicXML["Classes", 0]["Class", 1]["Lecture", 0].Value;
Assert.AreEqual("DynamicProgramming", res);
}
