How to convert a dynamic object to JSON string c#?

Question

I have the following dynamic object that I'm getting from a third party library:

IOrderStore os = ss.GetService<IOrderStore>();
IOrderInfo search = os.Orders.Where(t => t.Number == "test").FirstOrDefault();
IOrder orderFound = os.OpenOrder(search, true);

dynamic order = (dynamic)orderFound;
dynamic requirements = order.Title.Commitments[0].Requirements;

I need to parse it to a JSON string.

I tried this (using JSON.net):

string jsonString = JsonConvert.SerializeObject(requirements);
return jsonString;

But I get a seemingly corrupted JSON string, as below:

[{"$id":"1"},{"$id":"2"},{"$id":"3"},{"$id":"4"},{"$id":"5"},{"$id":"6"},{"$id":"7"},{"$id":"8"},{"$id":"9"},{"$id":"10"},{"$id":"11"},{"$id":"12"},{"$id":"13"},{"$id":"14"},{"$id":"15"}]

The object contains multiple properties, and not just the 'id'.

Any advice?

'string json = Newtonsoft.Json.JsonConvert.SerializeObject(foo);' — Rashid Javed
– Rashid Javed, Commented Aug 8, 2016 at 9:10
@user3378165 - yes please show the way Requirements is created because when just simply testing a list of dynamic objects and each with several fields they are all serialized — Gilad Green
– Gilad Green, Commented Aug 8, 2016 at 9:23
What you are trying to do looks perfectly correct. See this working example. We need to see the decalaration/definition of the Requirements property in order to help you. — Good Night Nerd Pride
– Good Night Nerd Pride, Commented Aug 8, 2016 at 9:47
@user3378165, sorry, but your edits don't help. What does Console.WriteLine(order.Title.Commitments[0].Requirements.GetType()); print? Show us that string, please. Also, you keep saying you are using a third party library. Which library? Is there documentation available? And most importantly: how you you know the returned JSON is "corrupted", as you say? What is your reference? What exactly do you expect to see? — Good Night Nerd Pride
– Good Night Nerd Pride, Commented Aug 8, 2016 at 10:22

Good Night Nerd Pride · Accepted Answer · 2016-08-08 09:50:26Z

15

Have you tried using var instead of dynamic?

// Use "var" in the declaration below.
var requirements = order.Title.Commitments[0].Requirements;
string jsonString = JsonConvert.SerializeObject(requirements);

When you only want to deserialize requirements without doing anything else with it then there is no need to use it dynamically.

answered Aug 8, 2016 at 9:50

Good Night Nerd Pride

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4 Comments

user3378165 Over a year ago

Thank you for your answer but I got the same JSON, with only the IDs.. Any other idea?

Good Night Nerd Pride Over a year ago

Yeah, talk to the guys that maintain that 3rd party library. My guess is they made a mistake when subclassing DynamicObject.

user3378165 Over a year ago

This is what I think too... I emailed them, let's see.. Thank you for your assistance!

Bartosz Over a year ago

And did you check what does 'var' actually mean to the compiler??

Nishant Singh · Accepted Answer · 2018-10-24 12:34:30Z

7

Try using Convert.ToString() as following code to convert 'dynamic' object to 'string' -

dynamic order = (dynamic)orderFound;
dynamic requirements = order.Title.Commitments[0].Requirements;
string validString = Convert.ToString(requirements);

edited Oct 24, 2018 at 12:34

Nishant Singh

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answered Oct 24, 2018 at 12:03

Sayit

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1 Comment

rboy Over a year ago

This works great in ASP.NET where var cannot be used

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