1. JSON.NET简介
2. Serializing and Deserializing JSON
   1. Json Convert
   2. Json Serializer
3. LINQ TO JSON
4. Converting XML
   1. Convert JSON to XML
   2. Convert XML to JSON
5. 原文链接

//Convert to Json
Product product = new Product();product.Name = "Apple";product.ExpiryDate = new DateTime(2008, 12, 28);product.Price = 3.99M;product.Sizes = new string[] { "Small", "Medium", "Large" };string output = JsonConvert.SerializeObject(product);
//{
//  "Name": "Apple",
//  "ExpiryDate": "2008-12-28T00:00:00",
//  "Price": 3.99,
//  "Sizes": [
//    "Small",
//    "Medium",
//    "Large"
//  ]
//}//Convert to Object
Product deserializedProduct = JsonConvert.DeserializeObject<Product>(output);

Product product = new Product();
product.ExpiryDate = new DateTime(2008, 12, 28);JsonSerializer serializer = new JsonSerializer();
serializer.Converters.Add(new JavaScriptDateTimeConverter());//指定转化日期的格式
serializer.NullValueHandling = NullValueHandling.Ignore;//忽略空值using (StreamWriter sw = new StreamWriter(@"d:\json.txt"))
using (JsonWriter writer = new JsonTextWriter(sw))
{serializer.Serialize(writer, product);// {"ExpiryDate":new Date(1230375600000),"Price":0}
}

JsonSerializer serializer = new JsonSerializer();
serializer.Converters.Add(new JavaScriptDateTimeConverter());//指定转化日期的格式
serializer.NullValueHandling = NullValueHandling.Ignore;//忽略空值using (StreamReader sr = new StreamReader(@"d:\json.txt"))
using (JsonReader reader= new JsonTextReader(sr))
{JObject jo =(JObject) serializer.Deserialize(reader);
//    {
//  "Name": null,
//  "ExpiryDate": "2008-12-28T00:00:00",
//  "Price": 0.0,
//  "Sizes": null
//}
}

// create JObjectJObject o = JObject.Parse(@"{'CPU': 'Intel','Drives': ['DVD read/writer','500 gigabyte hard drive']}");// query JObjectstring cpu = (string)o["CPU"];
// Intelstring firstDrive = (string)o["Drives"][0];
// DVD read/writer

IList<string> allDrives = o["Drives"].Select(t => (string)t).ToList();
// DVD read/writer
// 500 gigabyte hard drive

string json = @"{'@Id': 1,'Email': 'james@example.com','Active': true,'CreatedDate': '2013-01-20T00:00:00Z','Roles': ['User','Admin'],'Team': {'@Id': 2,'Name': 'Software Developers','Description': 'Creators of fine software products and services.'}
}";XNode node = JsonConvert.DeserializeXNode(json, "Root");
//<Root Id="1">
//  <Email>james@example.com</Email>
//  <Active>true</Active>
//  <CreatedDate>2013-01-20T00:00:00Z</CreatedDate>
//  <Roles>User</Roles>
//  <Roles>Admin</Roles>
//  <Team Id="2">
//    <Name>Software Developers</Name>
//    <Description>Creators of fine software products and services.</Description>
//  </Team>
//</Root>

 string xml = @"<?xml version='1.0' standalone='no'?><root><person id='1'><name>Alan</name><url>http://www.google.com</url></person><person id='2'><name>Louis</name><url>http://www.yahoo.com</url></person>
</root>";XmlDocument doc = new XmlDocument();
doc.LoadXml(xml);string json = JsonConvert.SerializeXmlNode(doc);Console.WriteLine(json);
// {
//   "?xml": {
//     "@version": "1.0",
//     "@standalone": "no"
//   },
//   "root": {
//     "person": [
//       {
//         "@id": "1",
//         "name": "Alan",
//         "url": "http://www.google.com"
//       },
//       {
//         "@id": "2",
//         "name": "Louis",
//         "url": "http://www.yahoo.com"
//       }
//     ]
//   }
// }