c# - json序列化格式化

Question

我正在尝试使用 json.net 序列化一组对象

对象看起来像这样:

public class TaxBand
{   
    public TaxBand(string county, decimal taxPercentage)
    {
        County = county;
        Tax = taxPercentage;
    }

    public string County { get; private set; }
    public decimal Tax { get; private set; }
}

它们包含在这样的结构中:

var data = new Dictionary<string, List<TaxBand>>();
data = PopulateDataset();
string json = JsonConvert.SerializeObject(data, Formatting.Indented);

这会生成如下所示的 json:

{
  "North": [
    {
      "County": "Merseyside",
      "Tax": 5.0
    },
    {
      "County": "Greater Manchester",
      "Tax": 6.0
    }
  ],
  "South": [
    {
      "County": "Greater London",
      "Tax": 5.5
    },
    {
      "County": "Surry",
      "Tax": 6.2
    }
  ]
}

是否可以生成如下所示的 json:

{
  "North": 
    {
      "Merseyside": 5.0,
      "Greater Manchester" : 6.0
    },
  "South": 
    {
      "Greater London": 5.5,
      "Surry": 6.2
    }
}

我很乐意考虑改变任何对象的形状，或者确实使用不同的序列化库

Answer 1

在一些Linq的帮助下

var data = new Dictionary<string, List<TaxBand>>();
data = PopulateDataset();

var data2 = data.ToDictionary(kv => kv.Key, 
                              kv => kv.Value.ToDictionary(t=>t.County,t=>t.Tax) );

var s = JsonConvert.SerializeObject(data2,Newtonsoft.Json.Formatting.Indented);

输出:

{
  "North": {
    "Merseyside": 5.0,
    "Greater Manchester": 6.0
  },
  "South": {
    "Greater London": 5.5,
    "Surry": 6.2
  }
}