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Why does deserialization of a nested dictionary throw an exception in C # but works in F #?

I am serializing the F # record type for Json using Newtonsoft.Json.FSharp.

type Prices =  Dictionary<string, decimal>

type PriceList = {Id:string; Name:string; Date:DateTime; CurrencySymbol:string; Status:Status; Prices:Prices}

let private converters : JsonConverter array =
  [| BigIntConverter();
    GuidConverter();
    ListConverter();
    OptionConverter();
    MapConverter();
    TupleArrayConverter();
    UnionConverter();
    UriConverter();
    CultureInfoConverter() |]

let private settings = JsonSerializerSettings (
                        Converters = converters,
                        Formatting = Formatting.Indented,
                        NullValueHandling = NullValueHandling.Ignore)

let serialize obj = JsonConvert.SerializeObject(obj, settings)

The result in JSON is this:

{
  "Id": "PriceList20140201",
  "Name": "PriceList",
  "Date": "2014-02-01T00:00:00+01:00",
  "CurrencySymbol": "€",
  "Status": 0,
  "Prices": {
    "ItemCodeA": 512.4,
    "ItemCodeB": 471.0
  }
}

And if I deserialize it, it works great

JsonConvert.DeserializeObject<PriceList>(text)

Result in F # Interactive:

val y : PriceList =
{Id = "PriceList20140201";
Name = "PriceList";
Date = 01.04.2014 00:00:00;
CurrencySymbol = "€";
Status = Sale;
Prices =
 dict
   [("ItemCodeA", 512.4M); ("ItemCodeB", 471.0M);...];}

Now I want to deserialize it in C # using Newtonsoft.Json

public class PriceList
{
    public string Id { get; set; }
    public string Name { get; set; }
    public DateTime Date { get; set; }
    public string CurrencySymbol { get; set; }
    public Status Status { get; set; }
    public Prices Prices { get; set; }
}

public class Prices : Dictionary<string, decimal>
{
}
...
JsonConvert.DeserializeObject<PriceList>(json)

The result is a JsonSerializationException:

JSON (, [1,2,3]) 'Halep.Logic.OfferManagement.Contracts.DataClasses.Pricing.Prices' JSON (, { "name": "value" }), . , JSON JSON (, { "name": "value" }) , (, ICollection, IList), List, JSON . JsonArrayAttribute , JSON. "", 7, 13.

, CustomConverter . , 6.0.? . 8.0.3. F #, #? # ?

PriceList , .

, :

public class PriceList
{
    public string Id { get; set; }
    public string Name { get; set; }
    public DateTime Date { get; set; }
    public string CurrencySymbol { get; set; }
    public Status Status { get; set; }
    public Dictionary<string, decimal> Prices { get; set; }
}

:

JSON (, [1,2,3]) 'System.Collections.Generic.Dictionary`2 [System.String, System.Decimal] JSON (, { "name": "value" }), . , JSON JSON (, { "name": "value" }) , (, ICollection, IList), List, JSON . JsonArrayAttribute , JSON. "", 7, 13.

2: . @JustinNiessner . , , [] {}:

{
  "Id": "PriceList20140201",
  "Name": "PriceList",
  "Date": "2014-02-01T00:00:00+01:00",
  "CurrencySymbol": "€",
  "Status": 0,
  "Prices": [
    "ItemCodeA": 512.4,
    "ItemCodeB": 471.0
  ]

}

+4
1

type Prices = Dictionary<string, decimal> - F #, , Dictionary<string, decimal>, #:

F #

.

#. using:

using Prices = System.Collections.Generic.Dictionary<string, object>;

Decimal<string, decimal> PriceList:

public class PriceList
{
    public string Id { get; set; }
    public string Name { get; set; }
    public DateTime Date { get; set; }
    public string CurrencySymbol { get; set; }
    public Status Status { get; set; }
    public Dictionary<string, decimal> Prices { get; set; }
}

# , F #.

+5

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