CODEWITHSUNDEEP
c#.netjsonserializationjson.net
Neil Barnwell
Neil Barnwell

Reputation: 42105

Newtonsoft.Json: DeserializeObject(string value, Type type) returns JObject

I'm using SignalR to receive a type name and Json, which for now I've relatively naively implemented by concatenating when with a pipe symbol on the server:

var ctx = GlobalHost.ConnectionManager.GetConnectionContext<MyConnection>();
ctx.Connection.Broadcast(message.GetType().FullName + "|" + JsonConvert.SerializeObject(message));

On the client, I'm trying to deserialise back to the correct Type, but of course can't use any of the generic methods on JsonConvert so I came up with this:

var pipePos = eventMessageString.IndexOf("|", StringComparison.Ordinal);
var typeName = eventMessageString.Substring(0, pipePos);
var eventJson = eventMessageString.Substring(pipePos + 1);

var eventType = Type.GetType(typeName);
var evt = JsonConvert.DeserializeObject(eventJson, eventType);

The only trouble is that evt is a Newtonsoft.Json.Linq.JObject, when really it should be an instance of the eventType type.

Is there a better way to do this, or at least a solution to get this working? I feel like I've missed something glaringly obvious - maybe I've been staring at it for too long?

Many thanks in advance.

Upvotes: 2

Views: 1109

Answers (1)

erikkallen
erikkallen

Reputation: 34391

Is the eventType non-null? When calling Type.GetType, you need the assembly-qualified name of the type.

Upvotes: 3

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