Parsing Json String in C#

Question

I have this Json String returned from a web api and stored in a var using JObject.Parse(result);

"{\"Status\":\"0\",\"Message\":\"OK\",\"Count\":\"2\",\"MethodLog\":[{\"ApplicationName\":\"MobileGeneral\",\"CompanySN\":\"0897001\",\"MethodLogCount\":12,\"MethodAccessRefusedCount\":0},{\"ApplicationName\":\"MobileGrain\",\"CompanySN\":\"0897123\",\"MethodLogCount\":900,\"MethodAccessRefusedCount\":0}]}"

I have already created required classes in my workspace:

{
public class MethodLogJson
{
    [JsonProperty("Status")]
    public string Status { get; set; }

    [JsonProperty("Message")]
    public string Message { get; set; }

    [JsonProperty("Count")]
    public string Count { get; set; }

    [JsonProperty("MethodLog")]
    public List<MethodLog> MethodLog { get; set; }
}
public class MethodLog
{
    [JsonProperty("ApplicationName")]
    public string ApplicationName { get; set; }

    [JsonProperty("CompanySN")]
    public string CompanySerial { get; set; }

    [JsonProperty("MethodLogCount")]
    public string MethodLogCnt { get; set; }

    [JsonProperty("MethodAccessRefusedCount")]
    public string MethodAccessRefusedCnt { get; set; }
}
}

In my controller I am using:

var resObj = JObject.Parse(result);
var methodLog = JsonConvert.DeserializeObject<MethodLogJson<MethodLog>>(resObj);

But it does not help. Shows me Non-generic Type cannot be used with type arguments. :( Help people!!

Well yes, MethodLogJson is a non-generic type - so MethodLogJson<MethodLog> makes no sense. Try just JsonConvert.DeserializeObject<MethodLogJson>(resObj) — Jon Skeet
– Jon Skeet, Commented Aug 21, 2014 at 13:37
@JonSkeet now it Shows: "the best overloaded method match has some invalid arguments." — Ninja9
– Ninja9, Commented Aug 21, 2014 at 13:41

w.brian · Accepted Answer · 2014-08-21 13:37:03Z

3

You're passing a type argument to a class that doesn't take type arguments. Change

var methodLog = JsonConvert.DeserializeObject<MethodLogJson<MethodLog>>(resObj);

to

var methodLog = JsonConvert.DeserializeObject<MethodLogJson>(resObj);

answered Aug 21, 2014 at 13:37

w.brian

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4 Comments

Ninja9 Over a year ago

Shows me : the best overloaded method match has some invalid arguments.

w.brian Over a year ago

What does the code for your controller action look like?

Bun Over a year ago

@Ninja9 You need to pass the JSON string to the JsonConvert.DeserializeObject and not the JObject (see the answer posted by @parachutinturtle)

Ninja9 Over a year ago

Thank you @Bun I have already implemented parachutingturtle 's code in my controller and that is exactly what I want. thank you everyone!

parachutingturtle · Accepted Answer · 2014-08-21 13:41:31Z

1

You don't need the JObject.Parse, simply deserialize the string into a MethodLogJson without type parameters.

MethodLogJson m = JsonConvert.DeserializeObject<MethodLogJson>(result);

answered Aug 21, 2014 at 13:41

parachutingturtle

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