获取一个ExpandoObject:

using Newtonsoft.Json;
using Newtonsoft.Json.Converters;

Container container = JsonConvert.Deserialize<Container>(jsonAsString, new ExpandoObjectConverter());

我做了一个使用Expando对象的DynamicJsonConverter的新版本。我使用了expando对象，因为我想使用Json.NET将动态序列化回JSON。

using System;
using System.Collections;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Dynamic;
using System.Web.Script.Serialization;

public static class DynamicJson
{
    public static dynamic Parse(string json)
    {
        JavaScriptSerializer jss = new JavaScriptSerializer();
        jss.RegisterConverters(new JavaScriptConverter[] { new DynamicJsonConverter() });

        dynamic glossaryEntry = jss.Deserialize(json, typeof(object)) as dynamic;
        return glossaryEntry;
    }

    class DynamicJsonConverter : JavaScriptConverter
    {
        public override object Deserialize(IDictionary<string, object> dictionary, Type type, JavaScriptSerializer serializer)
        {
            if (dictionary == null)
                throw new ArgumentNullException("dictionary");

            var result = ToExpando(dictionary);

            return type == typeof(object) ? result : null;
        }

        private static ExpandoObject ToExpando(IDictionary<string, object> dictionary)
        {
            var result = new ExpandoObject();
            var dic = result as IDictionary<String, object>;

            foreach (var item in dictionary)
            {
                var valueAsDic = item.Value as IDictionary<string, object>;
                if (valueAsDic != null)
                {
                    dic.Add(item.Key, ToExpando(valueAsDic));
                    continue;
                }
                var arrayList = item.Value as ArrayList;
                if (arrayList != null && arrayList.Count > 0)
                {
                    dic.Add(item.Key, ToExpando(arrayList));
                    continue;
                }

                dic.Add(item.Key, item.Value);
            }
            return result;
        }

        private static ArrayList ToExpando(ArrayList obj)
        {
            ArrayList result = new ArrayList();

            foreach (var item in obj)
            {
                var valueAsDic = item as IDictionary<string, object>;
                if (valueAsDic != null)
                {
                    result.Add(ToExpando(valueAsDic));
                    continue;
                }

                var arrayList = item as ArrayList;
                if (arrayList != null && arrayList.Count > 0)
                {
                    result.Add(ToExpando(arrayList));
                    continue;
                }

                result.Add(item);
            }
            return result;
        }

        public override IDictionary<string, object> Serialize(object obj, JavaScriptSerializer serializer)
        {
            throw new NotImplementedException();
        }

        public override IEnumerable<Type> SupportedTypes
        {
            get { return new ReadOnlyCollection<Type>(new List<Type>(new[] { typeof(object) })); }
        }
    }
}

我需要的是返回一个带有不同字段的json模型。 我的模型是这样的，但它可以改变。

{
    "employees":
    [
        { "name": "Darth", "surname": "Vader", "age": "27", "department": "finance"},
        { "name": "Luke", "surname": "Skywalker", "age": "25", "department": "IT"},
        { "name": "Han", "surname": "Solo", "age": "26", "department": "credit"}
    ]
}

获取数据值的列表

    JObject array = JObject.Parse(model.JsonData);
    var tableData = new List<JsonDynamicModel>();

    foreach (var objx in array.Descendants().OfType<JProperty>().Where(p => p.Value.Type != JTokenType.Array && p.Value.Type != JTokenType.Object))
            {
                var name = ((JValue)objx.Name).Value;
                var value = ((JValue)objx.Value).Value;
                if (tableData.FirstOrDefault(x => x.ColumnName == name.ToString()) == null)
                {
                    tableData.Add(new JsonDynamicModel
                    {
                        ColumnName = name.ToString(),
                        Values = new List<string> { value.ToString() },
                    });
                }
                else
                {
                    tableData.FirstOrDefault(x=>x.ColumnName == name.ToString()).Values.Add(value.ToString());
                }
            }

输出如下所示。然后我把结果模型转换成一个html表，我用这个方法创建了一个html表

// output
tableData[0].ColumnName -> "name";
tableData[0].Values -> {"Darth", "Luke", "Han" }
tableData[1].ColumnName -> "surname";
tableData[1].Values -> {"Vader", "Skywalker", "Solo" }
...

.NET 4.0有一个内置库可以做到这一点:

using System.Web.Script.Serialization;
JavaScriptSerializer jss = new JavaScriptSerializer();
var d = jss.Deserialize<dynamic>(str);

这是最简单的方法。

我使用http://json2csharp.com/来获取表示JSON对象的类。

输入:

{
   "name":"John",
   "age":31,
   "city":"New York",
   "Childs":[
      {
         "name":"Jim",
         "age":11
      },
      {
         "name":"Tim",
         "age":9
      }
   ]
}

输出:

public class Child
{
    public string name { get; set; }
    public int age { get; set; }
}

public class Person
{
    public string name { get; set; }
    public int age { get; set; }
    public string city { get; set; }
    public List<Child> Childs { get; set; }
}

之后我使用Newtonsoft。Json填充类:

using Newtonsoft.Json;

namespace GitRepositoryCreator.Common
{
    class JObjects
    {
        public static string Get(object p_object)
        {
            return JsonConvert.SerializeObject(p_object);
        }
        internal static T Get<T>(string p_object)
        {
            return JsonConvert.DeserializeObject<T>(p_object);
        }
    }
}

你可以这样调用它:

Person jsonClass = JObjects.Get<Person>(stringJson);

string stringJson = JObjects.Get(jsonClass);

PS:

如果你的JSON变量名不是一个有效的c#名称(名称以$开头)，你可以这样修复:

public class Exception
{
   [JsonProperty(PropertyName = "$id")]
   public string id { get; set; }
   public object innerException { get; set; }
   public string message { get; set; }
   public string typeName { get; set; }
   public string typeKey { get; set; }
   public int errorCode { get; set; }
   public int eventId { get; set; }
}

为此，我将使用JSON。NET对JSON流进行低级解析，然后从ExpandoObject类的实例构建对象层次结构。