How to write this function in C# to check if any object is defined after first level in json

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I am trying to identify if the json is nested or not. If it contains a second object after the first then it will return true if not false.

function check_if_nested(obj) {
    check_nest=[]
    obj.map(function(e,i) {$.each(e, function(v){
      if(typeof(obj[0][v])=='object') {check_nest.push('nested')} else {check_nest.push('not nested')}
    })})
    if(check_nest.includes('nested')) {return(true)} else {return(false)}
    }

//Not nested

obj_1 = [{
    one: "apples",
    two: "oranges"
}]

Usage: check_if_nested(obj_1)

output: false

obj_2 = [{
    one: "apples",
    two: "oranges",
    children: [{
        three: "bananas",
        four: "jicamas"
    }]
}]

Usage: check_if_nested(obj_2)

output: true

What I have tried:

new to c# I am not sure how to do this..

Posted 16-Jul-20 13:58pm

Member 14779968

Updated 17-Jul-20 0:56am

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Dave Kreskowiak 16-Jul-20 20:36pm

What you posted is not C#. It's javascript.

Member 14779968 16-Jul-20 20:39pm

can we write is in C#?

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Dave Kreskowiak · Answer 1 · 2020-07-16T16:01:00

What your'e calling "nested" is how json describes an array.

You cannot directly convert that javascript to C#. C# doesn't handle json natively like javascript does.

You have to inspect the json using a class dedicated for the purpose, like JsonDocument[^].

You'd start by looking at the type of the root node in the document. Is it an array or not? Move on to the next element, looking for whatever you're expecting based on what you've found already.

F-ES Sitecore · Answer 2 · 2020-07-17T00:56:00

You can do this with the Newtonsoft.Json package, no doubt with any other json handling library too.

C#

private void ParseJson (JToken token)
{
    foreach (var prop in token.Children())
    {
        if (prop.Type == JTokenType.Property)
        {
            var p = prop as JProperty;

            bool isNested = IsNested(p);

            Console.WriteLine(p.Name + " " + isNested.ToString());
        }

    }
}

private bool IsNested(JProperty token)
{
    bool isNested = false;

    if (token.Value.Type == JTokenType.Object)
    {
        isNested = true;
    }
    else if (token.Value.Type == JTokenType.Array)
    {
        isNested = true;
    }

    return isNested;
}

usage;

C#

var tokens = new List<JToken>();

string json = "[{one:\"apples\", two:\"oranges\", children:[{three:\"bananas\"}]}]";

dynamic jResult = JsonConvert.DeserializeObject(json);

var token = jResult as JToken;

if (token.Type == JTokenType.Array)
{
    tokens.AddRange(token.Children());
}
else
{
    tokens.Add(token);
}

foreach (var item in tokens)
{
    ParseJson(item);
}

That's a starting point anyway, it will probably need more work to make it more robust and to handle a greater variety of json, it depends how variable your json in.

How to write this function in C# to check if any object is defined after first level in json

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