using System;

using System.Xml;

using System.Xml.Linq;

using System.Linq;

using Newtonsoft.Json.Linq;

using System.Text.RegularExpressions;

public class Program

{

    public static void Main()

    {

        var json = @"{'pos':123,'name':'Bla'}";

        var jobj = JObject.Parse(json);

​

        JToken token = jobj.SelectToken("$.[?(@.name == 'Bla')]");

        if (token == null) Console.WriteLine("error");

        Console.WriteLine(token);

​

    }

}