C# - JSON serialization for SNS

Question

I want to serialize a message to be sent through AWS SNS module.

public async Task<string> jsonConvert(string message)  
{
    datamessage datamessage = new datamessage { message = message };
    gcmMessage lGcm = new gcmMessage { data = datamessage };
    MessageDto messageDto = new MessageDto { GCM = JsonConvert.SerializeObject(lGcm) };
    var msg = JsonConvert.SerializeObject(messageDto);
    return msg;
}

I'm using this code for the same but the return value is

{"GCM":"{\"data\":{\"message\":\"TestMsg\"}}"}

But I want it as

{"default": "TestMsg", "GCM": "{ \"data\": { \"message\": \"TestMsg\" } }"}

Any help would be appreciated.

Answer 1

The structure for the Json you want tot create should look like this:

Classes:

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

public class GCM
{
    [JsonProperty("data")]
    public Data Data { get; set; }
}

public class RootObject
{
    [JsonProperty("default")]
    public string Default { get; set; }

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

Create the message:

RootObject rootObject = new RootObject
{
    Default = "TestMsg",
    GCM = new GCM { Data = new Data { Message = "TestMsg" } }
};

Serialize:

var serialized = JsonConvert.SerializeObject(rootObject);

Result

"{\"default\":\"TestMsg\",\"GCM\":{\"data\":{\"message\":\"TestMsg\"}}}"

In your method it would look like this:

public async Task<string> jsonConvert(string message)
{
    RootObject rootObject = new RootObject
    {
        Default = message,
        GCM = new GCM { Data = new Data { Message = message } }
    };

    var msg = await Task.Factory.StartNew(() => JsonConvert.SerializeObject(rootObject));
    return msg;
}