解析返回的json文件（使用 jobject）_object obj= jsonconvert.deserializeobject

使用 jobject
JObject jsonObj = JsonConvert.DeserializeObject(retString) as JObject;
获取对应值：
int intni = jsonObj.Value(“Code”);

mvc转换json 返回值为JsonResult

实体转json

  string strJson = JsonConvert.SerializeObject(maxList);
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json转实体

 maxList = JsonConvert.DeserializeObject<List<List<MainInfoMx>>>(ReadAll);
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其他转换格式：

 string faceInfos = value["faces"].ToString();
                    JArray JFaceInfo =JArray.Parse(faceInfos);//string  转 JArray 
                    if (JFaceInfo!=null)
                    {
                        foreach (var item in JFaceInfo)
                        {
                            if (item!=null)
                            {
                                JObject JBOnePeson =  JObject.Parse(item.ToString());//string 转 JObject 注意这里用 new JObject 会出错
                                if (JBOnePeson!=null)
                                {
                                    ScanFaceLog model = new ScanFaceLog();
                                    try
                                    {
                                        model.image = JBOnePeson["image"]!= null ?JBOnePeson["image"].ToString() :string.Empty  ;
                                        model.camid = camid;
                                        model.devid = devid;
                                        model.InfosAll = string.Empty;//JBOnePeson.ToString();
                                        model.name = JBOnePeson["name"] != null ?  JBOnePeson["name"].ToString():string.Empty;
                                        model.personId = JBOnePeson["personId"] != null ?  JBOnePeson["personId"].ToString():string.Empty;
                                        model.gender = JBOnePeson["gender"] != null ?  JBOnePeson["gender"].ToString():string.Empty ;
                                        model.passType = JBOnePeson["passType"] != null ?int.Parse(JBOnePeson["passType"].ToString()) :2;
                                        ResultMsg msg = new DALScanFaceLog().Insert(model);
                                        if (msg.Success)
                                        {
                                            LogWrite.WriteLog("数据操作成功"); 
                                        }
                                        else
                                        {
                                            LogWrite.WriteLog("数据操作失败" + msg.ErrMsg);
                                        }
                                        
                                    }
                                    catch (Exception ex)
                                    {
                                        Msg.Code = 400;
                                        Msg.Msg= "失败的原因是:"+ex.Message;
                                        LogWrite.WriteLog(ex.Message);
                                    } 
                                }

                            }
                        }
                    }
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有时候 使用
JObject JBOnePeson = new JObject(item.ToString()); 会提示错误

推荐使用 JObject JBOnePeson = JObject.Parse(item.ToString());