asp.net - How to get / deserialize object of JsonPatchDocument?

Question

I could serialize the JsonPatchDocument model by using JsonConvert.SerializeObject(), but the type of result is string, how can I convert it to normal array type? Or how to get JsonPatchDocument object straight to array?

var pathSerialized = JsonConvert.SerializeObject(patch);
Console.WriteLine(pathSerialized);

// Result as string: 
// "[{"value":"2018-08-30","path":"/openTo","op":"replace"},{"value":"2018-04-01","path":"/openFrom","op":"replace"}]"

uhm ... that is the purpose of SerializeObject ... it provides you with a string representation of whatever you feed it. If you want those json-objects in a separate array, you have to serialize them each on their own or did i miss something? — X39
– X39, Commented Jun 13, 2018 at 12:49
I want to check condition of properties of that object, then string type is impossible to check it, that's why I wanted to get the object. Do you have any solution? — Hoàng Nguyễn
– Hoàng Nguyễn, Commented Jun 13, 2018 at 12:54
Why serializing it then in the first place? Why not just accessing the properties of JsonPatchDocument? — croxy
– croxy, Commented Jun 13, 2018 at 13:01
Yeah, I'm confused as well. You're starting with a full-fledged strongly-typed object, converting it to a JSON string, and then complaining that you don't want it to be a JSON string. Then, don't convert it to a JSON string. — Chris Pratt
– Chris Pratt, Commented Jun 13, 2018 at 13:08
@croxy I tried to access properties directly, but then it returned error like JsonPatchDocument does not contain definition of 'path'. Do you have suggestions? — Hoàng Nguyễn
– Hoàng Nguyễn, Commented Jun 13, 2018 at 13:08

croxy · Accepted Answer · 2018-06-13 13:15:47Z

8

You don't have to serialize the JsonPatchDocument object at all. You can access its properties directly through the object. For example filtering for the path property:

var elementsWithPath = patch.Operations.Where(o => o.path.Equals("some path"));

edited Jun 13, 2018 at 13:15

answered Jun 13, 2018 at 13:13

croxy

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Janilson · Accepted Answer · 2018-06-13 13:01:41Z

0

I think you might be looking to do something with JTokens from the Newtonsoft.Json.Linq namespace. You can turn the pathserialized string into a JToken with var jToken = JToken.Parse(pathSerializer), then explore the underlying objects and properties by enumerating them with var childTokens = jToken.Children().

One of those child tokens is going to be a JObject, which is a Json representation of an object. You can access properties of a JObject with jObject["propertyName"].

answered Jun 13, 2018 at 13:01

Janilson

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