CODEWITHSUNDEEP
c#arraysjsondeserialization
PurpleSmurph
PurpleSmurph

Reputation: 2107

Deserializing JSON object to array or list

I'm still not entirely sure on what exactly to ask, so apologies if this is ill conceived. The other questions I have found are related to people already receiving object arrays in JSON.

My JSON string is returning from a third party as an object when I have only ever dealt with it being returned as an array which is easily converted into objects in the past. 

var success = JsonConvert.DeserializeObject<RootObjectClass>(result); gives me a `Cannot deserialize the current JSON object (e.g. {\"name\":\"value\"}) into type 'System.Collections.Generic.List`

Should I convert this to an array, and if so how, as the objects are individually named the same as the property "contact_id" value?

Else, could someone point me in the right direction of best practice of how to get a list of Contacts out of this JSON.

The JSON structure is shown below.

{
    "status": true,
    "error_code": "",
    "error_message": "",
    "data": {
        "693": { // Contact obj, always the same as contact_id
            "contact_id": "693",
            // removed lots of properties for brevity
            "real_name": "Mike Hunt",
            "telephone": "01280845867",
            "email": "[email protected]"
        },
        "767": { 
            "contact_id": "767",
            "real_name": "Peter File",
            "telephone": "02580845866",
            "email": "[email protected]"
        }
    }
}

Class structure

[Serializable()]
[DataContract]
public class RootObjectClass
{
    [DataMember()]
    public bool status { get; set; }
    [DataMember()]
    public string error_code { get; set; }
    [DataMember()]
    public string error_message { get; set; }
    [DataMember()]
    public DataClass data { get; set; }
}
[Serializable()]
[DataContract]
public class DataClass
{
    [DataMember]
    public Contact contact { get; set; }
}

Upvotes: 0

Views: 58

Answers (1)

Ufuk Hacıoğulları
Ufuk Hacıoğulları

Reputation: 38468

You can deserialize data property to a dictionary:

[Serializable()]
[DataContract]
public class RootObjectClass
{
    [DataMember()]
    public bool status { get; set; }
    [DataMember()]
    public string error_code { get; set; }
    [DataMember()]
    public string error_message { get; set; }
    [DataMember()]
    public Dictionary<string,Contact> data { get; set; }
}

Then you can select the contacts like this:

var contacts = rootObject.data.Values.ToList();

Upvotes: 2

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