在.NET中使用Newtonsoft.Json转换,读取,写入



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

//把Json字符串反序列化为对象
目标对象 = JavaScriptConvert.DeserializeObject(JSON字符串, typeof(目标对象));
//把目标对象序列化为Json字符串

string Json字符串 = JavaScriptConvert.SerializeObject(目标对象);

1.引用Newtonsoft.Json.dll
2.在项目中添加引用..
序列化和反序列在.net项目中:

Product product = new Product();

product.Name = "Apple";
product.Expiry = new DateTime(2008, 12, 28);
product.Price = 3.99M;
product.Sizes = new string[] { "Small", "Medium", "Large" };

string output = JavaScriptConvert.SerializeObject(product);
//{
// "Name": "Apple",
// "Expiry": new Date(1230422400000),
// "Price": 3.99,
// "Sizes": [
//      "Small",
//      "Medium",
//      "Large"
// ]
//}

Product deserializedProduct = (Product)JavaScriptConvert.DeserializeObject(output, typeof(Product));

读取JSON

string jsonText = "['JSON!',1,true,{property:'value'}]";

JsonReader reader = new JsonReader(new StringReader(jsonText));

Console.WriteLine("TokenType\t\tValueType\t\tValue");

while (reader.Read())
{
      Console.WriteLine(reader.TokenType + "\t\t" + WriteValue(reader.ValueType) + "\t\t" + WriteValue(reader.Value))
}

结果显示:
TokenType ValueType Value 
StartArray null null 
String System.String JSON! 
Integer System.Int32 1 
Boolean System.Boolean True 
StartObject null null 
PropertyName System.String property 
String System.String value 
EndObject null null 
EndArray null null

JSON写入
StringWriter sw = new StringWriter();
JsonWriter writer = new JsonWriter(sw);

writer.WriteStartArray();
writer.WriteValue("JSON!");
writer.WriteValue(1);
writer.WriteValue(true);
writer.WriteStartObject();
writer.WritePropertyName("property");
writer.WriteValue("value");
writer.WriteEndObject();
writer.WriteEndArray();

writer.Flush();

string jsonText = sw.GetStringBuilder().ToString();

Console.WriteLine(jsonText);
// ['JSON!',1,true,{property:'value'}]