using System;

using System.Collections;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Runtime.Serialization.Formatters;

using System.IO;

​

using Newtonsoft.Json;

using Newtonsoft.Json.Linq;

using Newtonsoft.Json.Converters;

using Newtonsoft.Json.Serialization;

    public class Program

    {

        public static void Main()

        {

            Console.WriteLine("Json.NET version: " + typeof(JsonSerializer).Assembly.FullName);

            Console.WriteLine("");

​

            var json = @"

            [

                {

                  ""type"": ""06A, 06B, 06C, 06D, 06E"",

                  ""qt"": ""6-8-"",

                  ""id"": ""06A, 06B, 06C, 06D, 06E6-8-""

                },

                {

                  ""type"": ""06A"",

                  ""qt"": ""6-8-"",

                  ""id"": ""06A""

                }

            ]";

​

            var root = JToken.Parse(json);

            Console.WriteLine("Original JSON: ");

            Console.WriteLine(root);

            if (root is JContainer)

            {

                // If the root token is an array or object (not a primitive)

                var query = from obj in ((JContainer)root).Descendants().OfType<JObject>()  // Iterate through all JSON objects 

                            let type = obj["type"] as JValue                                // get the value of the property "type"

                            where type != null && type.Type == JTokenType.String 

                                && ((string)type).Contains(",")                             // If the value is a string that contains a comma

                            select obj;                                                     // Select the object

                foreach (var obj in query.ToList())

                {

                    // Remove the selected object

                    obj.Remove();

                }

            }

            var fileName = ""; //@Settings.Default.folder + "\\" + "upload" + "\\" + "ee.json";

            var sb = new StringBuilder();

            // Cannot serialize to a file on dotnetfiddle.net so serialize to a StringBuilder instead

​

            // using (var file = File.CreateText(fileName))

            using (var file = new StringWriter(sb))

            {

                var serializer = JsonSerializer.CreateDefault(new JsonSerializerSettings { Formatting = Formatting.Indented });

                serializer.Serialize(file, root);

            }

            Console.WriteLine("");

            Console.WriteLine("Filtered and re-serialized JSON: ");

            Console.WriteLine(sb);

        }

    }

​