using System;

using System.Collections.Generic;

using Newtonsoft.Json;

using Newtonsoft.Json.Serialization;

using Newtonsoft.Json.Converters;

using Newtonsoft.Json.Linq;

public class Program

{

    public static void Main()

    {

        var json = @" [{

    ""Id"": ""61dcc24e9b524f10b69a5c3f17be8603"",

    ""MakeName"": ""AUDI"",

    ""ExternalId"": ""61dcc24e9b524f10b69a5c3f17be8604"",

    ""CreatedBy"": ""System"",

    ""CreatedOn"": ""2022/01/05""

  },

  {

    ""Id"": ""27a617d75b2e45bab513e2f336fcd921"",

    ""MakeName"": ""BMW"",

    ""ExternalId"": ""27a617d75b2e45bab513e2f336fcd927"",

    ""CreatedBy"": ""System"",

    ""CreatedOn"": ""2022/01/05""

  }]";

        var data = JsonConvert.DeserializeObject<List<Make>>(json);

        FiddleHelper.Dump(data);

        json = JsonConvert.SerializeObject(data, Formatting.Indented);

        FiddleHelper.Dump(json);

    }

}

​

public class Make 

{

    public Make() {}

    [JsonConverter(typeof(GuidConverter))]

    public Guid Id { get; set; }

    public String MakeName { get; set; }

    public String CreatedBy { get; set; }

    public DateTimeOffset CreatedOn { get; set; }

    [JsonConverter(typeof(GuidConverter))]

    public Guid ExternalId{ get; set; }

}

​

​

public class GuidConverter : JsonConverter<Guid>

{

    public GuidConverter()

    {

    }

​

    public override void WriteJson(JsonWriter writer, Guid value, JsonSerializer serializer)

    {

        writer.WriteValue(value.ToString().Replace("-",""));

    }

​

    public override Guid ReadJson(JsonReader reader, Type objectType, Guid existingValue, bool hasExistingValue, JsonSerializer serializer)

    {

        string value = reader.Value.ToString();

        return Guid.Parse(value);

    }

​

    public override bool CanRead

    {

        get { return true; }

    }

​

}

​