Json newtonsoft : Deserialize string array from an Object

Question

My JSON is a very long one and i am fetching only one section "parent_crumbs" from the long JSON

 ...................,
 "parent_crumbs":["Platforms","New platform"],
 "promise_by":"2016-08-01",
  ....

The code I used to fetch value of "parent_crumbs" is

  JObject lp_p = JObject.Parse(response_json);
  string val= lp_p["parent_crumbs"].ToString();

This returns the following value

 "[\r\n  \"Platforms\",\"New platform\"\r\n]"

Now I have to do a comparison with the first value from the array as the string is available in a Dictionary as key value and if available return ID

        Packages = new Dictionary<string, int>();
        Packages.Add("Platforms", 10212);
        Packages.Add("New platform", 10202);
        Packages.Add("Unknown platform", 10203);
        int category=

        if(Packages.ContainsKey(val))
        {
                Packages.TryGetValue(val, out category);
        }

So with current code I can't do the comparison straight away due to presence of [\r\n etc.

How to get the value as a string Array without special chars like [\r\n .

Making Model Classes for the JSON for deserialization is not preferred way for me. Since creating class is a big job for me as lot of properties are there in JSON and is dynamic of nature

1. There are some online tools for creating classes from json like jsonutils.com 2. You only need a class with the properties you are looking for (here a single string array property) — Sir Rufo
– Sir Rufo, Commented Jun 22, 2018 at 6:19
Yes that way is possible , but i am looking for a way to do it without model classes to make sure code looks similar in all over the project — Sebastian
– Sebastian, Commented Jun 22, 2018 at 6:21

Gowri Pranith Kumar · Accepted Answer · 2018-06-22 06:23:37Z

2

We can use the below code

var input = "[\r\n  \"Platforms\",\"New platform\"\r\n]";
            var array =(JArray) JsonConvert.DeserializeObject(input);
            bool isEqual = array[0].Value<string>() == "Platforms";

answered Jun 22, 2018 at 6:23

Gowri Pranith Kumar

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1 Comment

Sebastian Over a year ago

exactly this is what i am looking for

Mark · Accepted Answer · 2018-06-22 08:39:59Z

2

you could also convert it to array with Linq

using System.Linq;

var tmp = lp_p["parent_crumbs"].Select(x => x.ToString());
foreach (var x in tmp)
{
    Console.WriteLine(x.ToString());
}

By using Select, it will help you convert it to array rather than to string

edited Jun 22, 2018 at 8:39

answered Jun 22, 2018 at 6:34

Mark

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Comments

SᴇM · Accepted Answer · 2018-06-22 06:46:37Z

0

You can use DeserializeAnonymousType method for that:

var myType = new 
{ 
    parent_crumbs = new []{ "" }, 
    promise_by = default(DateTime) 
};

var result = JsonConvert.DeserializeAnonymousType(json, myType);

int category = 0;
string key = result.parent_crumbs[0];
if(Packages.ContainsKey(key))
{
    Packages.TryGetValue(key, out category);
}

References: DotNetFiddle Example, DeserializeAnonymousType

edited Jun 22, 2018 at 6:46

answered Jun 22, 2018 at 6:26

SᴇM

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