属性强类型以松散类型JSON序列化

Question

I'm working on a MVC project using C# and have controller method that returns a JsonResult model. The model contains a property called Value.

Based on certain conditions the Value maybe a string value such as "C" or "N". But under other conditions it maybe .5.

When serializing the Model is it possible to check and if the property is a numeric to serialize it as number (no quotes)? If it is not a number then make it a string (quotes)?

For example I have the following class:

public class Answer
{
   public int Id{get;set;}
   public string Value { get; set; }
}

Let's say I return a list of these back: I'd like to have something like below: (Notice the 1st answer the "value" is not quoted; however, the 2nd and 3rd answer are quoted.

{
    "answers": [
        {
           "id": 1,
           "value": .5 <- No quote here.
        },
        {
           "id": 1,
           "value": "C" <- Quote here
        },
        {
           "id": 1,
           "value": "N" <- Quote here
        }
     ]
}

When it comes back server side (de-serializing), I'd just like the string representation.

Answer 1

I think you will have to implement a custom JSON Converter. See the following link:

http://james.newtonking.com/json/help/index.html?topic=html/CustomJsonConverter.htm