C# 之 dynamic object
近来在用CSOM解析Web Part属性，发现读取带namespace的XML还真是有点恶心，说白了就是懒得去深究，想啊，要是能变成类似JSON的东西就好了，
想起来.net4.0就神一般存在的 dynamic对象，有可能会带来惊喜，
果不然
- Parse XML to dynamic object in C#
- Creating a dynamic object from XML using ExpandoObject
- Fluent XML Parsing Using C#'s Dynamic Type Part 1
- Dynamic XML Reader with C# and .Net 4.0
<?xml version="1.0" encoding="utf-8" ?>
<contacts>
<contact id='1'>
<firstName>Michael</firstName>
<lastName>Jordan</lastName>
<age>40</age>
<dob>1965</dob>
<salary>100.35</salary>
</contact>
<contact id='2'>
<firstName>Scottie</firstName>
<lastName>Pippen</lastName>
<age>38</age>
<dob>1967</dob>
<salary>55.28</salary>
</contact>
</contacts>
public class XmlToDynamic
{
public static void Parse(dynamic parent, XElement node)
{
if (node.HasElements)
{
if (node.Elements(node.Elements().First().Name.LocalName).Count() > 1)
{
//list
var item = new ExpandoObject();
var list = new List<dynamic>();
foreach (var element in node.Elements())
{
Parse(list, element);
}
AddProperty(item, node.Elements().First().Name.LocalName, list);
AddProperty(parent, node.Name.ToString(), item);
}
else
{
var item = new ExpandoObject();
foreach (var attribute in node.Attributes())
{
AddProperty(item, attribute.Name.ToString(), attribute.Value.Trim());
}
//element
foreach (var element in node.Elements())
{
Parse(item, element);
}
AddProperty(parent, node.Name.ToString(), item);
}
}
else
{
AddProperty(parent, node.Name.ToString(), node.Value.Trim());
}
}
private static void AddProperty(dynamic parent, string name, object value)
{
if (parent is List<dynamic>)
{
(parent as List<dynamic>).Add(value);
}
else
{
(parent as IDictionary<String, object>)[name] = value;
}
}
}
[Test]
public void Test()
{
//read from text
//var xDoc = XDocument.Parse(txt);
//read from url
//var request = WebRequest.Create(@"http://...") as HttpWebRequest;
//request.Credentials = CredentialCache.DefaultNetworkCredentials;
//var xDoc = XDocument.Load(request.GetResponse().GetResponseStream());
//read from file
var xDoc = XDocument.Load(new StreamReader("contacts.xml"));
dynamic root = new ExpandoObject();
XmlToDynamic.Parse(root, xDoc.Elements().First());
Console.WriteLine(root.contacts.contact.Count);
Console.WriteLine(root.contacts.contact[0].firstName);
Console.WriteLine(root.contacts.contact[0].id);
}
我复制粘贴后开心的要死，一断点才发现也不是那么开心，后发现带Namespace的时候，要注意 Name 和Name.LocalName
尤其修改这一句用Name if (node.Elements(node.Elements().First().Name).Count() > 1)
还有气候的Name 变成 Name.LocalName
果然，服务端JSON出台了。