csharp-json

样例类

public class Model_driverProtocolSensorSimulator
{
    [JsonIgnore]
    public const int CMD_TYPE_LOGIN = 1;
    [JsonIgnore]
    public const int CMD_TYPE_SENSOR_INFO = 2;
    [JsonIgnore]
    public const int CMD_TYPE_SENSOR_DATA = 3;

    public int CmdType;
    public List<Model_driverSensor> List_sensor = new List<Model_driverSensor>();
    public string Param;
}

生成json字符串

var var_list = $"t{file_index}";
var strArr = new JArray { var_list };
var obj = new JObject{ {"type","datas" },{ "size",file_size},{ "var_name_list",strArr},{ "trans_type",trans_type},{"pre_formula",preFormula },
    { "preelaboration",preelabration},{ "formula",formula},{"elaboration",elaboration } };
string param = obj.ToString();

// without formatting
string strResponse = ws.CheckUser("", jsonObj.ToString(Formatting.None));

// object to json string
Newtonsoft.Json.JsonConvert.SerializeObject(new {foo = "bar"})

解析json字符串

public class Model_driverProtocol
{
    public int CMD_TYPE_LOGIN = 1;

    public int CmdType;
    public string param;
}

var obj = JsonConvert.DeserializeObject<Model_driverProtocol>(msg);
switch (obj.CmdType)
{
    case 1:
        break;
}

// 方法二
string json="{\"PingResult\":100}"; 
JObject jo = JObject.Parse(json); 
JToken jToken = jo["PingResult"];
int result = (int)jToken;

类保存为json

public class ModelMasterIdMapping
{
    [PrimaryKey, AutoIncrement]
    public int ID { get; set; }
    public string LocalIdMaster { get; set; }
    public string RemoteIdMaster { get; set; }
}

{
    var param = JsonConvert.SerializeObject(App.db.m_masterIdMapping);
    var notifyPath = new FileInfo(spc_path).Directory.FullName + "/masterIdMapping.json";
    FileStream fs = new FileStream(notifyPath, FileMode.Create);
    StreamWriter sw = new StreamWriter(fs);
    sw.Write(param);
    sw.Flush();
    sw.Close();
    fs.Close();
}

序列化 json 后 首字母小写

var user = new { Name = "john", Age = 19 }; 
var serializerSettings = new JsonSerializerSettings
        {
            // 设置为驼峰命名
            ContractResolver = new CamelCasePropertyNamesContractResolver()
        };
var userStr = JsonConvert.SerializeObject(user, Formatting.None, serializerSettings);

从文件加载 json

strResponse = System.IO.File.ReadAllText(appPath + "/taskResp.json");
var obj = JsonConvert.DeserializeObject<ModelResp<ModelTask>>(strResponse);