Json.NET decode multidimensional array

Question

I am a newbie in .Net and I am creating a desktop application to my website. I am passing data using JSON and Json.NET However I am receiving an error every time I try to decode this string. What could possibly be wrong? How do I decode a multidimensional array.

This is the string I am decoding

{
   "api_ver":"1.0",
   "request":"user-account-exists",
   "date":"2014-08-25 09:57:16",
   "data":
   {
      "user_account_exists":1
   }
}

My code is here

json_data = string.Empty;
try
{                
    json_data = webclient.DownloadString("http://api.mysite.com/?ruser-account-exists");
}
catch (Exception e)
{                
    Logger.Log(e.Message);
}

_api = !string.IsNullOrEmpty(json_data) ? JsonConvert.DeserializeObject<api>(json_data) : 
                                          new api();

The error is as shown below

Error reading string. Unexpected token: StartObject. Path 'data', line 1, position 86.

I want to deserialize this array into a dictionary

Paste your json to json2csharp.com and see how your classes should be declared — L.B
– L.B, Commented Aug 25, 2014 at 7:48
You say that you are trying to deserialize into a dictionary but your code is deserializing into an object api which is confusing. This error is occuring because the api class does not model the data correctly. Model the data using the above link or use dynamic instead. — User 12345678
– User 12345678, Commented Aug 25, 2014 at 7:51
@LB solution works perfectly. You should have posted this as an answer and I would have gladly accepted. Thanks guys. — sammyukavi
– sammyukavi, Commented Aug 25, 2014 at 7:53

User 12345678 · Accepted Answer · 2014-08-25 07:54:08Z

3

This error occurs because the api class does not model the json sufficiently.

The model should resemble the following one (generated using Json2CSharp):

public class Api
{
    public string api_ver { get; set; }
    public string request { get; set; }
    public string date { get; set; }
    public Data data { get; set; }
}

public class Data
{
    public int user_account_exists { get; set; }
}

Optionally you could use dynamic

dynamic values = JsonConvert.DeserializeObject<dynamic>(json_data);
bool exists = (int) values.data.user_account_exists == 1;

answered Aug 25, 2014 at 7:54

User 12345678

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Comments

shujaat siddiqui · Accepted Answer · 2014-08-25 07:54:12Z

0

Try This ?

public class api
{
    public string api_ver { get; set; }
    public string request { get; set; }
    public string date { get; set; }
    public Data data { get; set; }
}

public class Data
{
    public int user_account_exists { get; set; }
}

api apiObj = JsonConvert.DeserializeObject<api>(json_data) ;

answered Aug 25, 2014 at 7:54

shujaat siddiqui

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