Remove empty string properties from json serialized object

Question

I have a class. It has several properties lets say 10. Out of these 10, 3 are filled with data remaining 7 are blank.i.e. empty strings \"\" Used this link as reference. I w

Answer 1

i have done this with a converter.

using System;

using Newtonsoft.Json;
using Newtonsoft.Json.Linq;

namespace TestApp.JsonConverterResolver
{
    public class IgnoreEmptyStringsConverter : JsonConverter
    {
    #region Methods

        public override bool CanConvert(Type objectType)
        {
            return objectType == typeof(string);
        }

        public override object ReadJson(JsonReader reader, Type objectType, object existingValue,
                                        JsonSerializer serializer)
        {
            var theValue = reader.Value?.ToString();

            return !string.IsNullOrWhiteSpace(theValue) ? theValue : null;
        }

        public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
        {
            if (!string.IsNullOrWhiteSpace(value.ToString()))
            {
                JToken token = JToken.FromObject(value.ToString(), serializer);
                token.WriteTo(writer);
                return;
            }

            writer.WriteNull();
        }

    #endregion
    }
}

Example person model class:

public class Person
{
    public string Name { get; set; }
}

And the ueage:

var serializerSettings = new JsonSerializerSettings
     {
         Formatting           = Newtonsoft.Json.Formatting.Indented,
         NullValueHandling    = Newtonsoft.Json.NullValueHandling.Ignore,
         Converters           = new List {new IgnoreEmptyStringsConverter()}
     };

var person = JsonConvert.DeserializeObject("{ \"Name\":\"\" }", serializerSettings);

var jsonPerson = JsonConvert.SerializeObject(new Person { Name = "" }, serializerSettings);

I just wrote that out of my head. But I think that's how I solved it at some point. Maybe it helps someone.