如何根据C#中的型号数动态构造JSON key名称？

Question

例如：

{
   "Books": [
       {
           "Name-1":"The Alchemist",
           "Type-1":"Fiction"
       },
       {
           "Name-2":"Silent Spring",
           "Type-2":"Non-Fiction"
       },
       {
           "Name-3":"1984",
           "Type-3":"Fiction"
       }
   ]
}

我有Books模型定义的属性“名称”和“类型”。如何从Books集合创建如上的JSON？

Answer 1

将Books映射到Dictionary并序列化它们。类似于：

    serializer.Serialize(new { Books = books.Select((x, i) => 
        new Dictionary<string, string> { 
            { $"{nameof(x.Name}-{i+1}", x.Name }, 
            { $"{nameof(x.Type}-{i+1}", x.Type }
        }});

However, it looks very WIERD to have such a Json (I mean with indexes as property names of objects in same array)

Answer 2

需要通过JsonTextWriter生成json

        StringBuilder sb = new StringBuilder();
        StringWriter sw = new StringWriter(sb);
        using (JsonWriter writer = new JsonTextWriter(sw))
        {
            writer.WriteStartObject();

            writer.WritePropertyName("Books");

            writer.WriteStartArray();

            //your for


            writer.WriteEndArray();

            writer.WriteEndObject();
        }

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