C#按需序列化对象为Json字符串

只贴代码，不解释了。新的代理类型确实很给力！

public static class JsonHelper
{
    public static string ToJsonString<T>(IList<T> list, Func<T, string> fun)
    {
        StringBuilder buffer = new StringBuilder();
        bool isFirst = true;            
        
        foreach (T t in list)
        {
            if (!isFirst)
                buffer.Append(",");

            buffer.Append(fun(t));
            isFirst = false;
        }

        return buffer.ToString();
    }      

    public static string ToJsonString<T>(T t, Func<T, string> fun)
    {
        return fun(t);
    }
}

Josn Helper