How to use Json.net

This time I will bring you the method of using Json.net. What are the precautions for using the method of Json.net? The following is a practical case, let's take a look.

Json.net Common usage summary (recommended)

using System;
using System.Linq;
using System.Collections.Generic;
namespace microstore
{
  public interface IPerson
  {
    string FirstName
    {
      get;
      set;
    }
    string LastName
    {
      get;
      set;
    }
    DateTime BirthDate
    {
      get;
      set;
    }
  }
  public class Employee : IPerson
  {
    public string FirstName
    {
      get;
      set;
    }
    public string LastName
    {
      get;
      set;
    }
    public DateTime BirthDate
    {
      get;
      set;
    }
    public string Department
    {
      get;
      set;
    }
    public string JobTitle
    {
      get;
      set;
    }
  }
  public class PersonConverter : Newtonsoft.Json.Converters.CustomCreationConverter<IPerson>
  {
    //重写abstract class CustomCreationConverter<T>的Create方法
    public override IPerson Create(Type objectType)
    {
      return new Employee();
    }
  }
  public partial class testjson : System.Web.UI.Page
  {
    protected void Page_Load(object sender, EventArgs e)
    {
      //if (!IsPostBack)
      //  TestJson();
    }
    #region 序列化
    public string TestJsonSerialize()
    {
      Product product = new Product();
      product.Name = "Apple";
      product.Expiry = DateTime.Now.AddDays(3).ToString("yyyy-MM-dd hh:mm:ss");
      product.Price = 3.99M;
      //product.Sizes = new string[] { "Small", "Medium", "Large" };
      //string json = Newtonsoft.Json.JsonConvert.SerializeObject(product); //没有缩进输出
      string json = Newtonsoft.Json.JsonConvert.SerializeObject(product, Newtonsoft.Json.Formatting.Indented);
      //string json = Newtonsoft.Json.JsonConvert.SerializeObject(
      //  product, 
      //  Newtonsoft.Json.Formatting.Indented,
      //  new Newtonsoft.Json.JsonSerializerSettings { NullValueHandling = Newtonsoft.Json.NullValueHandling.Ignore }
      //);
      return string.Format("<p>{0}</p>", json);
    }
    public string TestListJsonSerialize()
    {
      Product product = new Product();
      product.Name = "Apple";
      product.Expiry = DateTime.Now.AddDays(3).ToString("yyyy-MM-dd hh:mm:ss");
      product.Price = 3.99M;
      product.Sizes = new string[] { "Small", "Medium", "Large" };
      List<Product> plist = new List<Product>();
      plist.Add(product);
      plist.Add(product);
      string json = Newtonsoft.Json.JsonConvert.SerializeObject(plist, Newtonsoft.Json.Formatting.Indented);
      return string.Format("<p>{0}</p>", json);
    }
    #endregion
    #region 反序列化
    public string TestJsonDeserialize()
    {
      string strjson = "{\"Name\":\"Apple\",\"Expiry\":\"2014-05-03 10:20:59\",\"Price\":3.99,\"Sizes\":[\"Small\",\"Medium\",\"Large\"]}";
      Product p = Newtonsoft.Json.JsonConvert.DeserializeObject<Product>(strjson);
      string template = @"<p><ul>
                  <li>{0}</li>
                  <li>{1}</li>
                  <li>{2}</li>
                  <li>{3}</li>
                </ul></p>";
      return string.Format(template, p.Name, p.Expiry, p.Price.ToString(), string.Join(",", p.Sizes));
    }
    public string TestListJsonDeserialize()
    {
      string strjson = "{\"Name\":\"Apple\",\"Expiry\":\"2014-05-03 10:20:59\",\"Price\":3.99,\"Sizes\":[\"Small\",\"Medium\",\"Large\"]}";
      List<Product> plist = Newtonsoft.Json.JsonConvert.DeserializeObject<List<Product>>(string.Format("[{0},{1}]", strjson, strjson));
      string template = @"<p><ul>
                  <li>{0}</li>
                  <li>{1}</li>
                  <li>{2}</li>
                  <li>{3}</li>
                </ul></p>";
      System.Text.StringBuilder strb = new System.Text.StringBuilder();
      plist.ForEach(x =>
        strb.AppendLine(
          string.Format(template, x.Name, x.Expiry, x.Price.ToString(), string.Join(",", x.Sizes))
        )
      );
      return strb.ToString();
    }
    #endregion
    #region 自定义反序列化
    public string TestListCustomDeserialize()
    {
      string strJson = "[ { \"FirstName\": \"Maurice\", \"LastName\": \"Moss\", \"BirthDate\": \"1981-03-08T00:00Z\", \"Department\": \"IT\", \"JobTitle\": \"Support\" }, { \"FirstName\": \"Jen\", \"LastName\": \"Barber\", \"BirthDate\": \"1985-12-10T00:00Z\", \"Department\": \"IT\", \"JobTitle\": \"Manager\" } ] ";
      List<IPerson> people = Newtonsoft.Json.JsonConvert.DeserializeObject<List<IPerson>>(strJson, new PersonConverter());
      IPerson person = people[0];
      string template = @"<p><ul>
                  <li>当前List<IPerson>[x]对象类型：{0}</li>
                  <li>FirstName：{1}</li>
                  <li>LastName：{2}</li>
                  <li>BirthDate：{3}</li>
                  <li>Department：{4}</li>
                  <li>JobTitle：{5}</li>
                </ul></p>";
      System.Text.StringBuilder strb = new System.Text.StringBuilder();
      people.ForEach(x =>
        strb.AppendLine(
          string.Format(
            template,
            person.GetType().ToString(),
            x.FirstName,
            x.LastName,
            x.BirthDate.ToString(),
            ((Employee)x).Department,
            ((Employee)x).JobTitle
          )
        )
      );
      return strb.ToString();
    }
    #endregion
    #region 反序列化成Dictionary
    public string TestDeserialize2Dic()
    {
      //string json = @"{""key1"":""zhangsan"",""key2"":""lisi""}";
      //string json = "{\"key1\":\"zhangsan\",\"key2\":\"lisi\"}";
      string json = "{key1:\"zhangsan\",key2:\"lisi\"}";
      Dictionary<string, string> dic = Newtonsoft.Json.JsonConvert.DeserializeObject<Dictionary<string, string>>(json);
      string template = @"<li>key：{0}，value：{1}</li>";
      System.Text.StringBuilder strb = new System.Text.StringBuilder();
      strb.Append("Dictionary<string, string>长度" + dic.Count.ToString() + "<ul>");
      dic.AsQueryable().ToList().ForEach(x =>
      {
        strb.AppendLine(string.Format(template, x.Key, x.Value));
      });
      strb.Append("</ul>");
      return strb.ToString();
    }
    #endregion
    #region NullValueHandling特性
    public class Movie
    {
      public string Name { get; set; }
      public string Description { get; set; }
      public string Classification { get; set; }
      public string Studio { get; set; }
      public DateTime? ReleaseDate { get; set; }
      public List<string> ReleaseCountries { get; set; }
    }
    /// <summary>
    /// 完整序列化输出
    /// </summary>
    public string CommonSerialize()
    {
      Movie movie = new Movie();
      movie.Name = "Bad Boys III";
      movie.Description = "It's no Bad Boys";
      string included = Newtonsoft.Json.JsonConvert.SerializeObject(
        movie,
        Newtonsoft.Json.Formatting.Indented, //缩进
        new Newtonsoft.Json.JsonSerializerSettings { }
      );
      return included;
    }
    /// <summary>
    /// 忽略空（Null）对象输出
    /// </summary>
    /// <returns></returns>
    public string IgnoredSerialize()
    {
      Movie movie = new Movie();
      movie.Name = "Bad Boys III";
      movie.Description = "It's no Bad Boys";
      string included = Newtonsoft.Json.JsonConvert.SerializeObject(
        movie,
        Newtonsoft.Json.Formatting.Indented, //缩进
        new Newtonsoft.Json.JsonSerializerSettings { NullValueHandling = Newtonsoft.Json.NullValueHandling.Ignore }
      );
      return included;
    }
    #endregion
    public class Product
    {
      public string Name { get; set; }
      public string Expiry { get; set; }
      public Decimal Price { get; set; }
      public string[] Sizes { get; set; }
    }
    #region DefaultValueHandling默认值
    public class Invoice
    {
      public string Company { get; set; }
      public decimal Amount { get; set; }
      // false is default value of bool
      public bool Paid { get; set; }
      // null is default value of nullable
      public DateTime? PaidDate { get; set; }
      // customize default values
      [System.ComponentModel.DefaultValue(30)]
      public int FollowUpDays { get; set; }
      [System.ComponentModel.DefaultValue("")]
      public string FollowUpEmailAddress { get; set; }
    }
    public void GG()
    {
      Invoice invoice = new Invoice
      {
        Company = "Acme Ltd.",
        Amount = 50.0m,
        Paid = false,
        FollowUpDays = 30,
        FollowUpEmailAddress = string.Empty,
        PaidDate = null
      };
      string included = Newtonsoft.Json.JsonConvert.SerializeObject(
        invoice,
        Newtonsoft.Json.Formatting.Indented,
        new Newtonsoft.Json.JsonSerializerSettings { }
      );
      // {
      //  "Company": "Acme Ltd.",
      //  "Amount": 50.0,
      //  "Paid": false,
      //  "PaidDate": null,
      //  "FollowUpDays": 30,
      //  "FollowUpEmailAddress": ""
      // }
      string ignored = Newtonsoft.Json.JsonConvert.SerializeObject(
        invoice,
        Newtonsoft.Json.Formatting.Indented,
        new Newtonsoft.Json.JsonSerializerSettings { DefaultValueHandling = Newtonsoft.Json.DefaultValueHandling.Ignore }
      );
      // {
      //  "Company": "Acme Ltd.",
      //  "Amount": 50.0
      // }
    }
    #endregion
    #region JsonIgnoreAttribute and DataMemberAttribute 特性
    public string OutIncluded()
    {
      Car car = new Car
      {
        Model = "zhangsan",
        Year = DateTime.Now,
        Features = new List<string> { "aaaa", "bbbb", "cccc" },
        LastModified = DateTime.Now.AddDays(5)
      };
      return Newtonsoft.Json.JsonConvert.SerializeObject(car, Newtonsoft.Json.Formatting.Indented);
    }
    public string OutIncluded2()
    {
      Computer com = new Computer
      {
        Name = "zhangsan",
        SalePrice = 3999m,
        Manufacture = "red",
        StockCount = 5,
        WholeSalePrice = 34m,
        NextShipmentDate = DateTime.Now.AddDays(5)
      };
      return Newtonsoft.Json.JsonConvert.SerializeObject(com, Newtonsoft.Json.Formatting.Indented);
    }
    public class Car
    {
      // included in JSON
      public string Model { get; set; }
      public DateTime Year { get; set; }
      public List<string> Features { get; set; }
      // ignored
      [Newtonsoft.Json.JsonIgnore]
      public DateTime LastModified { get; set; }
    }
    //在nt3.5中需要添加System.Runtime.Serialization.dll引用
    [System.Runtime.Serialization.DataContract]
    public class Computer
    {
      // included in JSON
      [System.Runtime.Serialization.DataMember]
      public string Name { get; set; }
      [System.Runtime.Serialization.DataMember]
      public decimal SalePrice { get; set; }
      // ignored
      public string Manufacture { get; set; }
      public int StockCount { get; set; }
      public decimal WholeSalePrice { get; set; }
      public DateTime NextShipmentDate { get; set; }
    }
    #endregion
    #region IContractResolver特性
    public class Book
    {
      public string BookName { get; set; }
      public decimal BookPrice { get; set; }
      public string AuthorName { get; set; }
      public int AuthorAge { get; set; }
      public string AuthorCountry { get; set; }
    }
    public void KK()
    {
      Book book = new Book
      {
        BookName = "The Gathering Storm",
        BookPrice = 16.19m,
        AuthorName = "Brandon Sanderson",
        AuthorAge = 34,
        AuthorCountry = "United States of America"
      };
      string startingWithA = Newtonsoft.Json.JsonConvert.SerializeObject(
        book, Newtonsoft.Json.Formatting.Indented,
        new Newtonsoft.Json.JsonSerializerSettings { ContractResolver = new DynamicContractResolver('A') }
      );
      // {
      //  "AuthorName": "Brandon Sanderson",
      //  "AuthorAge": 34,
      //  "AuthorCountry": "United States of America"
      // }
      string startingWithB = Newtonsoft.Json.JsonConvert.SerializeObject(
        book,
        Newtonsoft.Json.Formatting.Indented,
        new Newtonsoft.Json.JsonSerializerSettings { ContractResolver = new DynamicContractResolver('B') }
      );
      // {
      //  "BookName": "The Gathering Storm",
      //  "BookPrice": 16.19
      // }
    }
    public class DynamicContractResolver : Newtonsoft.Json.Serialization.DefaultContractResolver
    {
      private readonly char _startingWithChar;
      public DynamicContractResolver(char startingWithChar)
      {
        _startingWithChar = startingWithChar;
      }
      protected override IList<Newtonsoft.Json.Serialization.JsonProperty> CreateProperties(Type type, Newtonsoft.Json.MemberSerialization memberSerialization)
      {
        IList<Newtonsoft.Json.Serialization.JsonProperty> properties = base.CreateProperties(type, memberSerialization);
        // only serializer properties that start with the specified character
        properties =
          properties.Where(p => p.PropertyName.StartsWith(_startingWithChar.ToString())).ToList();
        return properties;
      }
    }
    #endregion
    //...
  }
}
    #region Serializing Partial JSON Fragment Example
    public class SearchResult
    {
      public string Title { get; set; }
      public string Content { get; set; }
      public string Url { get; set; }
    }
    public string SerializingJsonFragment()
    {
      #region
      string googleSearchText = @"{
        'responseData': {
          'results': [{
            'GsearchResultClass': 'GwebSearch',
            'unescapedUrl': 'http://en.wikipedia.org/wiki/Paris_Hilton',
            'url': 'http://en.wikipedia.org/wiki/Paris_Hilton',
            'visibleUrl': 'en.wikipedia.org',
            'cacheUrl': 'http://www.google.com/search?q=cache:TwrPfhd22hYJ:en.wikipedia.org',
            'title': '<b>Paris Hilton</b> - Wikipedia, the free encyclopedia',
            'titleNoFormatting': 'Paris Hilton - Wikipedia, the free encyclopedia',
            'content': '[1] In 2006, she released her debut album...'
          },
          {
            'GsearchResultClass': 'GwebSearch',
            'unescapedUrl': 'http://www.imdb.com/name/nm0385296/',
            'url': 'http://www.imdb.com/name/nm0385296/',
            'visibleUrl': 'www.imdb.com',
            'cacheUrl': 'http://www.google.com/search?q=cache:1i34KkqnsooJ:www.imdb.com',
            'title': '<b>Paris Hilton</b>',
            'titleNoFormatting': 'Paris Hilton',
            'content': 'Self: Zoolander. Socialite <b>Paris Hilton</b>...'
          }],
          'cursor': {
            'pages': [{
              'start': '0',
              'label': 1
            },
            {
              'start': '4',
              'label': 2
            },
            {
              'start': '8',
              'label': 3
            },
            {
              'start': '12',
              'label': 4
            }],
            'estimatedResultCount': '59600000',
            'currentPageIndex': 0,
            'moreResultsUrl': 'http://www.google.com/search?oe=utf8&ie=utf8...'
          }
        },
        'responseDetails': null,
        'responseStatus': 200
      }";
      #endregion
      Newtonsoft.Json.Linq.JObject googleSearch = Newtonsoft.Json.Linq.JObject.Parse(googleSearchText);
      // get JSON result objects into a list
      List<Newtonsoft.Json.Linq.JToken> listJToken = googleSearch["responseData"]["results"].Children().ToList();
      System.Text.StringBuilder strb = new System.Text.StringBuilder();
      string template = @"<ul>
                  <li>Title:{0}</li>
                  <li>Content: {1}</li>
                  <li>Url:{2}</li>
                </ul>";
      listJToken.ForEach(x =>
      {
        // serialize JSON results into .NET objects
        SearchResult searchResult = Newtonsoft.Json.JsonConvert.DeserializeObject<SearchResult>(x.ToString());
        strb.AppendLine(string.Format(template, searchResult.Title, searchResult.Content, searchResult.Url));
      });
      return strb.ToString();
    }
    #endregion
    #region ShouldSerialize
    public class CC
    {
      public string Name { get; set; }
      public CC Manager { get; set; }
      //http://msdn.microsoft.com/en-us/library/53b8022e.aspx
      public bool ShouldSerializeManager()
      {
        // don't serialize the Manager property if an employee is their own manager
        return (Manager != this);
      }
    }
    public string ShouldSerializeTest()
    {
      //create Employee mike
      CC mike = new CC();
      mike.Name = "Mike Manager";
      //create Employee joe
      CC joe = new CC();
      joe.Name = "Joe Employee";
      joe.Manager = mike; //set joe'Manager = mike
      // mike is his own manager
      // ShouldSerialize will skip this property
      mike.Manager = mike;
      return Newtonsoft.Json.JsonConvert.SerializeObject(new[] { joe, mike }, Newtonsoft.Json.Formatting.Indented);
    }
    #endregion
    //驼峰结构输出（小写打头，后面单词大写）
    public string JJJ()
    {
      Product product = new Product
      {
        Name = "Widget",
        Expiry = DateTime.Now.ToString(),
        Price = 9.99m,
        Sizes = new[] { "Small", "Medium", "Large" }
      };
      string json = Newtonsoft.Json.JsonConvert.SerializeObject(
        product,
        Newtonsoft.Json.Formatting.Indented,
        new Newtonsoft.Json.JsonSerializerSettings { ContractResolver = new Newtonsoft.Json.Serialization.CamelCasePropertyNamesContractResolver() }
      );
      return json;
      //{
      // "name": "Widget",
      // "expiryDate": "2010-12-20T18:01Z",
      // "price": 9.99,
      // "sizes": [
      //  "Small",
      //  "Medium",
      //  "Large"
      // ]
      //}
    }
    #region ITraceWriter
    public class Staff
    {
      public string Name { get; set; }
      public List<string> Roles { get; set; }
      public DateTime StartDate { get; set; }
    }
    public void KKKK()
    {
      Staff staff = new Staff();
      staff.Name = "Arnie Admin";
      staff.Roles = new List<string> { "Administrator" };
      staff.StartDate = new DateTime(2000, 12, 12, 12, 12, 12, DateTimeKind.Utc);
      Newtonsoft.Json.Serialization.ITraceWriter traceWriter = new Newtonsoft.Json.Serialization.MemoryTraceWriter();
      Newtonsoft.Json.JsonConvert.SerializeObject(
        staff,
        new Newtonsoft.Json.JsonSerializerSettings
        {
          TraceWriter = traceWriter,
          Converters = { new Newtonsoft.Json.Converters.JavaScriptDateTimeConverter() }
        }
      );
      Console.WriteLine(traceWriter);
      // 2012-11-11T12:08:42.761 Info Started serializing Newtonsoft.Json.Tests.Serialization.Staff. Path ''.
      // 2012-11-11T12:08:42.785 Info Started serializing System.DateTime with converter Newtonsoft.Json.Converters.JavaScriptDateTimeConverter. Path 'StartDate'.
      // 2012-11-11T12:08:42.791 Info Finished serializing System.DateTime with converter Newtonsoft.Json.Converters.JavaScriptDateTimeConverter. Path 'StartDate'.
      // 2012-11-11T12:08:42.797 Info Started serializing System.Collections.Generic.List`1[System.String]. Path 'Roles'.
      // 2012-11-11T12:08:42.798 Info Finished serializing System.Collections.Generic.List`1[System.String]. Path 'Roles'.
      // 2012-11-11T12:08:42.799 Info Finished serializing Newtonsoft.Json.Tests.Serialization.Staff. Path ''.
      // 2013-05-18T21:38:11.255 Verbose Serialized JSON: 
      // {
      //  "Name": "Arnie Admin",
      //  "StartDate": new Date(
      //   976623132000
      //  ),
      //  "Roles": [
      //   "Administrator"
      //  ]
      // }
    }
    #endregion
    public string TestReadJsonFromFile()
    {
      Linq2Json l2j = new Linq2Json();
      Newtonsoft.Json.Linq.JObject jarray = l2j.GetJObject4();
      return jarray.ToString();
    }
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
namespace microstore
{
  public class Linq2Json
  {
    #region GetJObject
    //Parsing a JSON Object from text 
    public Newtonsoft.Json.Linq.JObject GetJObject()
    {
      string json = @"{
               CPU: 'Intel',
               Drives: [
                'DVD read/writer',
                '500 gigabyte hard drive'
               ]
              }";
      Newtonsoft.Json.Linq.JObject jobject = Newtonsoft.Json.Linq.JObject.Parse(json);
      return jobject;
    }
    /* 
     * //example:=>
     * 
      Linq2Json l2j = new Linq2Json();
      Newtonsoft.Json.Linq.JObject jobject = l2j.GetJObject2(Server.MapPath("json/Person.json"));
      //return Newtonsoft.Json.JsonConvert.SerializeObject(jobject, Newtonsoft.Json.Formatting.Indented);
      return jobject.ToString();
     */
    //Loading JSON from a file
    public Newtonsoft.Json.Linq.JObject GetJObject2(string jsonPath)
    {
      using (System.IO.StreamReader reader = System.IO.File.OpenText(jsonPath))
      {
        Newtonsoft.Json.Linq.JObject jobject = (Newtonsoft.Json.Linq.JObject)Newtonsoft.Json.Linq.JToken.ReadFrom(new Newtonsoft.Json.JsonTextReader(reader));
        return jobject;
      }
    }
    //Creating JObject
    public Newtonsoft.Json.Linq.JObject GetJObject3()
    {
      List<Post> posts = GetPosts();
      Newtonsoft.Json.Linq.JObject jobject = Newtonsoft.Json.Linq.JObject.FromObject(new
      {
        channel = new
        {
          title = "James Newton-King",
          link = "http://james.newtonking.com",
          description = "James Newton-King's blog.",
          item =
            from p in posts
            orderby p.Title
            select new
            {
              title = p.Title,
              description = p.Description,
              link = p.Link,
              category = p.Category
            }
        }
      });
      return jobject;
    }
    /*
      {
        "channel": {
          "title": "James Newton-King",
          "link": "http://james.newtonking.com",
          "description": "James Newton-King's blog.",
          "item": [{
            "title": "jewron",
            "description": "4546fds",
            "link": "http://www.baidu.com",
            "category": "jhgj"
          },
          {
            "title": "jofdsn",
            "description": "mdsfan",
            "link": "http://www.baidu.com",
            "category": "6546"
          },
          {
            "title": "jokjn",
            "description": "m3214an",
            "link": "http://www.baidu.com",
            "category": "hg425"
          },
          {
            "title": "jon",
            "description": "man",
            "link": "http://www.baidu.com",
            "category": "goodman"
          }]
        }
      }
     */
    //Creating JObject
    public Newtonsoft.Json.Linq.JObject GetJObject4()
    {
      List<Post> posts = GetPosts();
      Newtonsoft.Json.Linq.JObject rss = new Newtonsoft.Json.Linq.JObject(
          new Newtonsoft.Json.Linq.JProperty("channel",
            new Newtonsoft.Json.Linq.JObject(
              new Newtonsoft.Json.Linq.JProperty("title", "James Newton-King"),
              new Newtonsoft.Json.Linq.JProperty("link", "http://james.newtonking.com"),
              new Newtonsoft.Json.Linq.JProperty("description", "James Newton-King's blog."),
              new Newtonsoft.Json.Linq.JProperty("item",
                new Newtonsoft.Json.Linq.JArray(
                  from p in posts
                  orderby p.Title
                  select new Newtonsoft.Json.Linq.JObject(
                    new Newtonsoft.Json.Linq.JProperty("title", p.Title),
                    new Newtonsoft.Json.Linq.JProperty("description", p.Description),
                    new Newtonsoft.Json.Linq.JProperty("link", p.Link),
                    new Newtonsoft.Json.Linq.JProperty("category",
                      new Newtonsoft.Json.Linq.JArray(
                        from c in p.Category
                        select new Newtonsoft.Json.Linq.JValue(c)
                      )
                    )
                  )
                )
              )
            )
          )
        );
      return rss;
    }
    /*
      {
        "channel": {
          "title": "James Newton-King",
          "link": "http://james.newtonking.com",
          "description": "James Newton-King's blog.",
          "item": [{
            "title": "jewron",
            "description": "4546fds",
            "link": "http://www.baidu.com",
            "category": ["j", "h", "g", "j"]
          },
          {
            "title": "jofdsn",
            "description": "mdsfan",
            "link": "http://www.baidu.com",
            "category": ["6", "5", "4", "6"]
          },
          {
            "title": "jokjn",
            "description": "m3214an",
            "link": "http://www.baidu.com",
            "category": ["h", "g", "4", "2", "5"]
          },
          {
            "title": "jon",
            "description": "man",
            "link": "http://www.baidu.com",
            "category": ["g", "o", "o", "d", "m", "a", "n"]
          }]
        }
      }
     */
    public class Post
    {
      public string Title { get; set; }
      public string Description { get; set; }
      public string Link { get; set; }
      public string Category { get; set; }
    }
    private List<Post> GetPosts()
    {
      List<Post> listp = new List<Post>()
      {
        new Post{Title="jon",Description="man",Link="http://www.baidu.com",Category="goodman"},
        new Post{Title="jofdsn",Description="mdsfan",Link="http://www.baidu.com",Category="6546"},
        new Post{Title="jewron",Description="4546fds",Link="http://www.baidu.com",Category="jhgj"},
        new Post{Title="jokjn",Description="m3214an",Link="http://www.baidu.com",Category="hg425"}
      };
      return listp;
    }
    #endregion
    #region GetJArray
    /*
     * //example:=>
     * 
      Linq2Json l2j = new Linq2Json();
      Newtonsoft.Json.Linq.JArray jarray = l2j.GetJArray();
      return Newtonsoft.Json.JsonConvert.SerializeObject(jarray, Newtonsoft.Json.Formatting.Indented);
      //return jarray.ToString();
     */
    //Parsing a JSON Array from text 
    public Newtonsoft.Json.Linq.JArray GetJArray()
    {
      string json = @"[
               'Small',
               'Medium',
               'Large'
              ]";
      Newtonsoft.Json.Linq.JArray jarray = Newtonsoft.Json.Linq.JArray.Parse(json);
      return jarray;
    }
    //Creating JArray
    public Newtonsoft.Json.Linq.JArray GetJArray2()
    {
      Newtonsoft.Json.Linq.JArray array = new Newtonsoft.Json.Linq.JArray();
      Newtonsoft.Json.Linq.JValue text = new Newtonsoft.Json.Linq.JValue("Manual text");
      Newtonsoft.Json.Linq.JValue date = new Newtonsoft.Json.Linq.JValue(new DateTime(2000, 5, 23));
      //add to JArray
      array.Add(text);
      array.Add(date);
      return array;
    }
    #endregion
    //待续...
  }
}

Test effect:

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="testjson.aspx.cs" Inherits="microstore.testjson" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
  <title></title>
  <style type="text/css">
    body{ font-family:Arial,微软雅黑; font-size:14px;}
    a{ text-decoration:none; color:#333;}
    a:hover{ text-decoration:none; color:#f00;}
  </style>
</head>
<body>  
  <form id="form1" runat="server">
    <h3>序列化对象</h3>
    表现1：<br />
    <%=TestJsonSerialize()%>
    <%=TestListJsonSerialize() %>
    表现2：<br />
    <%=TestListJsonSerialize2() %>
    <hr />
    <h3>反序列化对象</h3>
    <p>单个对象</p>
    <%=TestJsonDeserialize() %>
    <p>多个对象</p>
    <%=TestListJsonDeserialize() %>  
    <p>反序列化成数据字典Dictionary</p>
    <%=TestDeserialize2Dic() %>
    <hr />  
    <h3>自定义反序列化</h3>
    <%=TestListCustomDeserialize()%>
    <hr />
    <h3>序列化输出的忽略特性</h3>
    NullValueHandling特性忽略=><br />
    <%=CommonSerialize() %><br />
    <%=IgnoredSerialize()%><br /><br />
    属性标记忽略=><br />
    <%=OutIncluded() %><br />
    <%=OutIncluded2() %>
    <hr />
    <h3>Serializing Partial JSON Fragments</h3>
    <%=SerializingJsonFragment() %>
    <hr />
    <h3>ShouldSerialize</h3>
    <%=ShouldSerializeTest() %><br />
    <%=JJJ() %><br /><br />
    <%=TestReadJsonFromFile() %>
  </form>
</body>
</html>

Display:

sequence Object

Performance 1:

{ "Name": "Apple", "Expiry": "2014-05-04 02:08:58", "Price": 3.99, "Sizes": null }
[ { "Name": "Apple", "Expiry": "2014-05-04 02:08:58", "Price": 3.99, "Sizes": [ "Small", "Medium", "Large" ] }, { "Name": "Apple", "Expiry": "2014-05-04 02:08:58", "Price": 3.99, "Sizes": [ "Small", "Medium", "Large" ] } ]

Performance 2:

[ { "Name": "Apple", "Expiry": "2014-05-04 02:08:58", "Price": 3.99, "Sizes": [ "Small", "Medium", "Large" ] }, { "Name": "Apple", "Expiry": "2014-05-04 02:08:58", "Price": 3.99, "Sizes": [ "Small", "Medium", "Large" ] } ]

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