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13

Is it possible to return a dynamic object from a json deserialization using json.net? I would like to do something like this:

dynamic jsonResponse = JsonConvert.Deserialize(json);
Console.WriteLine(jsonResponse.message);
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Looks like a duplicate of stackoverflow.com/questions/3142495/… – Jon of All Trades Feb 15 at 15:47

4 Answers

up vote 68 down vote accepted

latest json.net version allow do this:

dynamic d = JObject.Parse("{number:1000, str:'string', array: [1,2,3,4,5,6]}");

Console.WriteLine(d.number);
Console.WriteLine(d.str);
Console.WriteLine(d.array.Count);

output:

 1000
 string
 6

Documentation here: LINQ to JSON with Json.NET

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up vote 12 down vote

I know this is old post but JsonConvert actually has a different method so it would be

var product = new { Name = "", Price = 0 };
var jsonResponse = JsonConvert.DeserializeAnonymousType(json, product);
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That would be deserializing a json payload into an anonymous type, not a dynamic type. Anonymous types and dynamic types are different things, and I don't believe this addresses the question asked. – jrista Aug 1 '12 at 19:12
up vote 12 down vote

As of Json.NET 4.0 Release 1, there is native dynamic support:

[Test]
public void DynamicDeserialization()
{
    var jsonResponse = JsonConvert.DeserializeObject<dynamic>("{\"message\":\"Hi\"}");
    Console.WriteLine(jsonResponse.message); // Hi
}

And, of course, the best way to get the current version is via NuGet.

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up vote 6 down vote

You need to have some sort of type to deserialize to. You could do something along the lines of:

var product = new { Name = "", Price = 0 };
dynamic jsonResponse = JsonConvert.Deserialize(json, product.GetType());

Edit: epitka, there was no need to edit my answer. My answer was based on a solution for .NET 4.0's build in JSON serializer.

Edit2: since epitka is having a cry and down-voted without reason, link to deserialize to anonymous types is here:

http://blogs.msdn.com/b/alexghi/archive/2008/12/22/using-anonymous-types-to-deserialize-json-data.aspx

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@epitka - you downvoted me because I un-edited your edit on my answer? blogs.msdn.com/b/alexghi/archive/2008/12/22/… here is the solution. – Phill Jun 7 '11 at 22:54
I don't think I down-voted you. When I downvote somebody, I usually leave a comment why. I don't see why I would down-vote you, although it was in Feb. Anyway, chill out, it is not a world cup. – epitka Jun 8 '11 at 13:30
@epitka - I looked at your reputation, you had -2 for a down-vote on this question yesterday. If you explained why I wouldn't have said anything, it just seemed like a completely unjustified down-vote. – Phill Jun 8 '11 at 14:34
5  
Yes, "I" had it, somebody down voted my answer. I did not down-vote your answer. Maybe we can get answer from SO what happened? I was not even online yesterday at 22:36. I received down-vote for my answer man. – epitka Jun 8 '11 at 15:47

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