在日常编程中经常会使用到Json来进行数据的交互好在.Net平台下有很多开源的Json库使得我们能够比较轻松快速的处理各种复杂的Json，其中Newtonsoft库

是NET的流行高性能JSON框架

特性

工具

VS2010+

Newtonsoft库

从NuGet下载合适的Newtonsoft.Json库

1.在你需要引用Newtosoft.Json的项目上，点击鼠标右键，管理Nuget程序包即可打开项目包管理器。

2.在包管理器中输入关键字"Json"看到Newtosoft.Json这个库 点击右下加的箭头即可完成安装。

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示例

1、序列化JSON-序列化和反序列化JSON，序列化程序设置和序列化属性

public class Account
{public string Email { get; set; }public bool Active { get; set; }public DateTime CreatedDate { get; set; }public IList<string> Roles { get; set; }
}

Account account = new Account
{Email = "james@example.com",Active = true,CreatedDate = new DateTime(2013, 1, 20, 0, 0, 0, DateTimeKind.Utc),Roles = new List<string>{"User","Admin"}
};string json = JsonConvert.SerializeObject(account, Formatting.Indented);
// {
//   "Email": "james@example.com",
//   "Active": true,
//   "CreatedDate": "2013-01-20T00:00:00Z",
//   "Roles": [
//     "User",
//     "Admin"
//   ]
// }Console.WriteLine(json);

2、LINQ to JSON-解析，查询，修改和编写JSON

JArray array = new JArray();
array.Add("Manual text");
array.Add(new DateTime(2000, 5, 23));JObject o = new JObject();
o["MyArray"] = array;string json = o.ToString();
// {
//   "MyArray": [
//     "Manual text",
//     "2000-05-23T00:00:00"
//   ]
// }

3、JSON模式-加载模式并验证JSON。请注意，JSON Schema验证已移至其自己的程序包。有关 更多详细信息，请参见https://www.newtonsoft.com/jsonschema。

JObject o = JObject.Parse(@"{'Stores': ['Lambton Quay','Willis Street'],'Manufacturers': [{'Name': 'Acme Co','Products': [{'Name': 'Anvil','Price': 50}]},{'Name': 'Contoso','Products': [{'Name': 'Elbow Grease','Price': 99.95},{'Name': 'Headlight Fluid','Price': 4}]}]
}");string name = (string)o.SelectToken("Manufacturers[0].Name");Console.WriteLine(name);
// Acme Codecimal productPrice = (decimal)o.SelectToken("Manufacturers[0].Products[0].Price");Console.WriteLine(productPrice);
// 50string productName = (string)o.SelectToken("Manufacturers[1].Products[0].Name");Console.WriteLine(productName);
// Elbow Grease

4、转换XML-将JSON转换为XML和XML转换为JSON

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");Console.WriteLine(node.ToString());
// <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>

5、BSON-序列化和反序列化BSON

public class Event
{public string Name { get; set; }public DateTime StartDate { get; set; }
}

Event e = new Event
{Name = "Movie Premiere",StartDate = new DateTime(2013, 1, 22, 20, 30, 0, DateTimeKind.Utc)
};MemoryStream ms = new MemoryStream();
using (BsonWriter writer = new BsonWriter(ms))
{JsonSerializer serializer = new JsonSerializer();serializer.Serialize(writer, e);
}string data = Convert.ToBase64String(ms.ToArray());Console.WriteLine(data);
// MQAAAAJOYW1lAA8AAABNb3ZpZSBQcmVtaWVyZQAJU3RhcnREYXRlAED982M8AQAAAA==

6、读取和写入JSON-使用JsonTextReader读取JSON，使用JsonTextWriter写入JSON

string json = @"{'CPU': 'Intel','PSU': '500W','Drives': ['DVD read/writer'/*(broken)*/,'500 gigabyte hard drive','200 gigabyte hard drive']
}";JsonTextReader reader = new JsonTextReader(new StringReader(json));
while (reader.Read())
{if (reader.Value != null){Console.WriteLine("Token: {0}, Value: {1}", reader.TokenType, reader.Value);}else{Console.WriteLine("Token: {0}", reader.TokenType);}
}// Token: StartObject
// Token: PropertyName, Value: CPU
// Token: String, Value: Intel
// Token: PropertyName, Value: PSU
// Token: String, Value: 500W
// Token: PropertyName, Value: Drives
// Token: StartArray
// Token: String, Value: DVD read/writer
// Token: Comment, Value: (broken)
// Token: String, Value: 500 gigabyte hard drive
// Token: String, Value: 200 gigabyte hard drive
// Token: EndArray
// Token: EndObject

更多功能见https://github.com/JamesNK/Newtonsoft.Json