CODEWITHSUNDEEP
c#json
Sandokan
Sandokan

Reputation: 1105

Accessed JArray values with invalid key value in different json

I've this json:

{
     "status": true,
     "Text": "Example"
}

But sometimes this could change, so I need to check if the index Text is available in the response passed, code:

var container = (JContainer)JsonConvert.DeserializeObject(response);
var message = container["Text"];

the problem is that I get this exception on message (if the json doesn't contain the key text):

{"Accessed JArray values with invalid key value: \"Text\". Int32 array index expected."}

How can I avoid this problem?

Upvotes: 1

Views: 4100

Answers (1)

Joseph Woodward
Joseph Woodward

Reputation: 9281

What version of NewtonSoft are you using?

The following results in message being null and no exception is thrown.

var res = @"{""status"": true }";

var container = (JContainer)JsonConvert.DeserializeObject(res);
var message = container["Text"];

// message = null

Update:

Following your response, even this doesn't throw the exception you're seeing:

var res = @"{}";

var container = (JContainer)JsonConvert.DeserializeObject(res);
var message = container["Text"];

Having updated my code to reflect yours with the same version I'm still not getting the exception you're seeing. This is what I'm doing:

var res = @"{""trace"":{""details"":{""[date]"":""[29-02-2016 17:07:29.773750]"",""[level]"":""[info]"",""[message]"":""[System Done.]""},""context"":[[{""ID"":""John Dillinger""}]]}}";

var container = (JContainer)JsonConvert.DeserializeObject(res);
var message = container["Text"];

The message variable is still null.

In light of this perhaps try create a simple console application with the above code and see if you get the same exception?

Upvotes: 1

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