Deserialize a json string to an object variable in C#

Question

I have the following code:

var response = await client.PostAsync("http://localhost/test-request", content);

var responseString = await response.Content.ReadAsStringAsync();
var responseJSON = JsonConvert.DeserializeObject(responseString);

Console.WriteLine("Finished");

MessageBox.Show("Hi", responseJSON.value, MessageBoxButtons.OK);

The responseString comes back properly but i'm trying to convert it to an object so I can do more advanced stuff with the return value.

The problem is, C# / Visual Studio is complaining that responseJSON.value does not have a value (which it doesn't until the Async operation is complete)

How do I get around this problem?

You are attempting to deserialize to object, that's likely the problem. The asynchronous part of the function is done much earlier than that — Camilo Terevinto
– Camilo Terevinto, Commented May 23, 2018 at 23:30
You might want JObject.Parse(responseJson) or you might want to create a class that represents the json schema and deserialize to that specific type. — Crowcoder
– Crowcoder, Commented May 23, 2018 at 23:34
you can deseiralize to dynamic if you do not have a concrete class available — Nkosi
– Nkosi, Commented May 23, 2018 at 23:35
Could you return an instance directly using ReadAsAsync? E.g. var response = await response.Content.ReadAsAsync<MyClass>(); — Win
– Win, Commented May 23, 2018 at 23:42

pm100 · Accepted Answer · 2018-05-23 23:36:26Z

1

var responseJSON = JsonConvert.DeserializeObject(responseString);

creates responseJSON as a JSON.net JSObject.

You need either

var responseJSON = JsonConvert.DeserializeObject<SomeObject>(responseString);

or

dynamic responseJSON = JsonConvert.DeserializeObject(responseString);

answered May 23, 2018 at 23:36

pm100

50.6k25 gold badges95 silver badges158 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

Deserialize a json string to an object variable in C#

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related