src/ZKEACMS.SectionWidget/ContentJsonConvert/JsonCreationConverter.cs

（完整代码） 1KB 

/* http://www.zkea.net/ 
 * Copyright (c) ZKEASOFT. All rights reserved. 
 * http://www.zkea.net/licenses */

using System;
using Newtonsoft.Json;
using Newtonsoft.Json.Linq;
using System.Reflection;

namespace ZKEACMS.SectionWidget.ContentJsonConvert
{
    public abstract class JsonCreationConverter<T> : JsonConverter
    {
        Type _childType;
        public Type ChildType
        {
            get { return _childType ?? (_childType = typeof(T)); }
        }
        protected abstract T Create(Type objectType, JObject jObject);

        public override bool CanConvert(Type objectType)
        {
            return objectType.IsAssignableFrom(ChildType);
        }

        public override object ReadJson(JsonReader reader,
                                        Type objectType,
                                         object existingValue,
                                         JsonSerializer serializer)
        {
            JObject jObject = JObject.Load(reader);

            T target = Create(objectType, jObject);

            serializer.Populate(jObject.CreateReader(), target);

            return target;
        }

        public override void WriteJson(JsonWriter writer,
                                       object value,
                                       JsonSerializer serializer)
        {
            throw new NotImplementedException();
        }
    }
}

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