qdr.fnd/qdr.fnd.core/Json/IListConverterFactory.cs

using System;
using System.Collections.Generic;
using System.Text.Json;
using System.Text.Json.Serialization;

namespace Quadarax.Foundation.Core.Json
{
    public class IListInterfaceConverterFactory : JsonConverterFactory
    {
        public IListInterfaceConverterFactory(Type interfaceType)
        {
            this.InterfaceType = interfaceType;
        }

        public Type InterfaceType { get; }

        public override bool CanConvert(Type typeToConvert)
        {
            if (typeToConvert == typeof(IList<>).MakeGenericType(this.InterfaceType)
                && typeToConvert.GenericTypeArguments[0] == this.InterfaceType)
            {
                return true;
            }

            return false;
        }

        public override JsonConverter? CreateConverter(Type typeToConvert, JsonSerializerOptions options)
        {
            return (JsonConverter?)Activator.CreateInstance(
                typeof(ListConverter<>).MakeGenericType(this.InterfaceType));
        }
    }

}