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c#jsonjson.net
Jeffrey
Jeffrey

Reputation: 4506

JSON.NET JObject key comparison case-insensitive

I'm using Newtonsoft Json.net to parse the JSON string. I convert the string into the JObject. When access the value of the element by the key, I want to the comparison is case-insensitive. In the code below, I use "FROM" as the key. I want it returns string "1" at the line json["FROM"].ToString(). But it fails. Is it possible to make the code below work?

String ptString = "{from: 1, to: 3}";
var json = (JObject)JsonConvert.DeserializeObject(ptString);

String f = json["FROM"].ToString();

Upvotes: 51

Views: 34779

Answers (2)

Gian Marco
Gian Marco

Reputation: 23269

This should work:

var json = @"{UPPER: 'value'}";
var jObj = JObject.Parse(json);
var upper = jObj.GetValue("upper", StringComparison.OrdinalIgnoreCase)?.Value<string>();

Console.WriteLine(upper); // value

Upvotes: 144

ForeverWintr
ForeverWintr

Reputation: 6038

c# allows you to use dictionaries with keys that are case insensitive, so a workaround I've used is to convert the JObject to a dictionary with StringComparer.CurrentCultureIgnoreCase set, like so:

JObject json = (JObject)JsonConvert.DeserializeObject(ptString);
Dictionary<string, object> d = new Dictionary<string, object>(json.ToObject<IDictionary<string, object>>(), StringComparer.CurrentCultureIgnoreCase);

String f = d["FROM"].ToString();

Upvotes: 17

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