C# JSON Deserializing a List of objects within an Object - 


{ "devicestatus": {     "totaldevices": 3,     "startindex": 0,     "utctimestamp": 1502782784,     "list": [         {             "identifier": "000d6f000a9e6e3d:0",             "rxtime": 0         },         {             "identifier": "000d6f000be977f0:0",             "rxtime": 1502782323,             "lowbattery": "false",             "level": "0",             "batterylevel": "84"         },         {             "identifier": "000d6f000be95e24:0",             "rxtime": 1502782754,             "lowbattery": "false",             "level": "0",             "batterylevel": "86"         }         ]     } }     public class qube {     private const string _json = "{\"devicestatus\":{\"totaldevices\":3,\"startindex\":0,\"utctimestamp\":1502782784,\"list\":[{\"identifier\":\"000d6f000a9e6e3d:0\",\"rxtime\":0},{\"identifier\":\"000d6f000be977f0:0\",\"rxtime\":1502782323,\"lowbattery\":\"false\",\"level\":\"0\",\"batterylevel\":\"84\"},{\"identifier\":\"000d6f000be95e24:0\",\"rxtime\":1502782754,\"lowbattery\":\"false\",\"level\":\"0\",\"batterylevel\":\"86\"}]}}";      public void getstatus()     {         var jsonrootobj = jsonconvert.deserializeobject<rootobject>(_json);          console.writeline(string.format("total devices = {0}, start index = {1}, timestamp = {2}",jsonrootobj.devicestatus.totaldevices,jsonrootobj.devicestatus.startindex,jsonrootobj.devicestatus.utctimestamp));          console.writeline(string.format("device 1 id = {0}",jsonrootobj.devicestatus.device[0].identifier));          console.readline();     }  }  public class device {     public string identifier { get; set; }     public int rxtime { get; set; }     public string lowbattery { get; set; }     public string level { get; set; }     public string batterylevel { get; set; } }  public class devicestatus {     public int totaldevices { get; set; }     public int startindex { get; set; }     public int utctimestamp { get; set; }     public list<device> device { get; set; } }  public class rootobject {     public devicestatus devicestatus { get; set; } }

im trying deserialize json string receive ethernet device. json string receive above.

i have worked out how deserialize devicestatus.totaldevices, .startindex, .utctimestamp etc.

but when console.writeline(string.format("device 1 id = {0}",jsonrootobj.devicestatus.device[0].identifier)); exception

object reference not set instance of object

im sure im missing simple first ever c# project cant work out.

i've done quite alot of searching on here me point cant further.

thanks

in json, property list must named device or rename property device using [jsonproperty("list")]:

public class devicestatus {     public int totaldevices { get; set; }     public int startindex { get; set; }     public int utctimestamp { get; set; }      [jsonproperty("list")]     public list<device> device { get; set; } }

otherwise json.net doesn't know property list belongs , value null - here nullreferenceexception mentioned


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