你可以使用System.Web.Helpers.Json——它的Decode方法返回一个动态对象，你可以随意遍历它。

它包含在System.Web.Helpers程序集中(。NET 4.0)。

var dynamicObject = Json.Decode(jsonString);

简单的“字符串JSON数据”对象，无需任何第三方DLL文件:

WebClient client = new WebClient();
string getString = client.DownloadString("https://graph.facebook.com/zuck");

JavaScriptSerializer serializer = new JavaScriptSerializer();
dynamic item = serializer.Deserialize<object>(getString);
string name = item["name"];

//note: JavaScriptSerializer in this namespaces
//System.Web.Script.Serialization.JavaScriptSerializer

注意:也可以使用自定义对象。

Personel item = serializer.Deserialize<Personel>(getString);

在JSON中反序列化。NET可以使用包含在该库中的JObject类来实现动态。我的JSON字符串表示这些类:

public class Foo {
   public int Age {get;set;}
   public Bar Bar {get;set;}
}

public class Bar {
   public DateTime BDay {get;set;}
}

现在我们在不引用上述类的情况下反序列化字符串:

var dyn = JsonConvert.DeserializeObject<JObject>(jsonAsFooString);

JProperty propAge = dyn.Properties().FirstOrDefault(i=>i.Name == "Age");
if(propAge != null) {
    int age = int.Parse(propAge.Value.ToString());
    Console.WriteLine("age=" + age);
}

//or as a one-liner:
int myage = int.Parse(dyn.Properties().First(i=>i.Name == "Age").Value.ToString());

或者如果你想深入一点:

var propBar = dyn.Properties().FirstOrDefault(i=>i.Name == "Bar");
if(propBar != null) {
    JObject o = (JObject)propBar.First();
    var propBDay = o.Properties().FirstOrDefault (i => i.Name=="BDay");
    if(propBDay != null) {
        DateTime bday = DateTime.Parse(propBDay.Value.ToString());
        Console.WriteLine("birthday=" + bday.ToString("MM/dd/yyyy"));
    }
}

//or as a one-liner:
DateTime mybday = DateTime.Parse(((JObject)dyn.Properties().First(i=>i.Name == "Bar").First()).Properties().First(i=>i.Name == "BDay").Value.ToString());

完整的示例请参见文章。

使用Cinchoo ETL -一个开源库，可将JSON解析为动态对象:

string json = @"{
    ""key1"": [
        {
            ""action"": ""open"",
            ""timestamp"": ""2018-09-05 20:46:00"",
            ""url"": null,
            ""ip"": ""66.102.6.98""
        }
    ]
}";
using (var p = ChoJSONReader.LoadText(json)
    .WithJSONPath("$..key1")
    )
{
    foreach (var rec in p)
    {
        Console.WriteLine("Action: " + rec.action);
        Console.WriteLine("Timestamp: " + rec.timestamp);
        Console.WriteLine("URL: " + rec.url);
        Console.WriteLine("IP address: " + rec.ip);
    }
}

输出:

Action: open
Timestamp: 2018-09-05 20:46:00
URL: http://www.google.com
IP address: 66.102.6.98

样本提琴:https://dotnetfiddle.net/S0ehSV

有关更多信息，请访问codeproject文章

声明:我是这个库的作者。

获取一个ExpandoObject:

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

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

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。