Cannot deserialize the current JSON array in single sub array

Question

my json is like

{
 "code":"1",
 "message":"The request succeeded",
"contacts":    
           { "contactId":"58330efb45cedb9087e281e6",
             "email":"",
             "firstName":"",
             "lastName":"",
             "number":"4145075733"
           }
}

and i am trying to use DeserializeObject with this Generic.List

public class AllContacts
{
    public string code { get; set; }
    public string message { get; set; }
    public List<ContactList> contacts { get; set; }
}
public class ContactList
{
    public string contactId { get; set; }
    public string email { get; set; }
    public string firstName { get; set; }
    public string lastName { get; set; }
    public string number { get; set; }
}

this is working fine with two or more data in contact array but it's not working in single data.

Error:

Cannot deserialize the current JSON object (eg.{"name":"value"}) into type 'System.Collections.Generic.List'1[smsApplication.Controller‌s.ContactList]' because the type requires a JSON array to deserialize correctly. To fix this error either change the JSON to a JSON array or change the deserialized type so that it is a normal .NET type (e.g. not a primitive type like integer, not a collection type like an array or List<T>) that can be deserialized from a JSON object. JsonObjectAttribute can also be added to the type to force it to deserialize from a JSON object.

please define "not working". You get an error message, or it doesn't produce the expected result? Give an example. — ADyson
– ADyson, Commented Dec 2, 2016 at 14:02
"Not working" gives error Cannot deserialize the current JSON object (eg.{"name":"value"}) into type 'System.Collections.Generic.List`1[smsApplication.Controllers.ContactList]' because the type requires a JSON array to deserialize correctly. To fix this error either change the JSON to a JSON array or change the deserialized type so that it is a normal .NET type (e.g. not a primitive type like integer, not a collection type like an array or List<T>) that can be deserialized from a JSON object. JsonObjectAttribute can also be added to the type to force it to deserialize from a JSON object. — bksoni
– bksoni, Commented Dec 2, 2016 at 14:05
Another approach, you could use JObject and SelectToken to pull in the data. — Netferret
– Netferret, Commented Dec 2, 2016 at 15:16

Nkosi · Accepted Answer · 2016-12-02 15:08:35Z

1

Thats because contact is a json object and not a json array

Either update the json to match the defined classes

{
 "code":"1",
 "message":"The request succeeded",
"contacts":[    
           { "contactId":"58330efb45cedb9087e281e6",
             "email":"",
             "firstName":"",
             "lastName":"",
             "number":"4145075733"
           }]
}

Or update the classes to match the json

public class AllContacts
{
    public string code { get; set; }
    public string message { get; set; }
    public ContactList contacts { get; set; }
}

public class ContactList
{
    public string contactId { get; set; }
    public string email { get; set; }
    public string firstName { get; set; }
    public string lastName { get; set; }
    public string number { get; set; }
}

The error message explains what you do.

answered Dec 2, 2016 at 15:08

Nkosi

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