为什么我无法反序列化刚刚序列化的对象？

Dim serialized = Newtonsoft.Json.JsonConvert.SerializeObject(gridOrderNewState)
Dim gridOrderNewstate2 = Newtonsoft.Json.JsonConvert.DeserializeObject(Of gridTradingState)(serialized)

结果几乎是空版本gridOrderNewstate2

这就是序列化后的值

{
   "bidInBase":0.99055,
   "askInBase":0.99333,
   "high":0.99448,
   "low":0.97528,
   "dateSinceLastTransactions":"2022-11-14T21:04:34.0103292+07:00",
   "suggestedLow":0.0,
   "suggestedhigh":0.0,
   "Orders":[
      {
         "time":"2022-11-14T13:09:54",
         "id":"227286807874",
         "customIdentifier":"t-FraxTest",
         "amountOfQuoteCurrencyBeingOrdered":6.25,
         "priceInBasecoin":1.0,
         "marketString":"gate",
         "Base":"USDT",
         "Quote":"FRAX",
         "isSellingInsteadOfBuying":true,
         "marketURL":"https://gate.io/trade/frax_usdt"
      },
      {
         "time":"2022-11-14T13:09:54",
         "id":"227286807867",
         "customIdentifier":"t-FraxTest",
         "amountOfQuoteCurrencyBeingOrdered":6.263,
         "priceInBasecoin":0.99778,
         "marketString":"gate",
         "Base":"USDT",
         "Quote":"FRAX",
         "isSellingInsteadOfBuying":true,
         "marketURL":"https://gate.io/trade/frax_usdt"
      },
      {
         "time":"2022-11-14T13:09:54",
         "id":"227286807859",
         "customIdentifier":"t-FraxTest",
         "amountOfQuoteCurrencyBeingOrdered":6.277,
         "priceInBasecoin":0.99556,
         "marketString":"gate",
         "Base":"USDT",
         "Quote":"FRAX",
         "isSellingInsteadOfBuying":true,
         "marketURL":"https://gate.io/trade/frax_usdt"
      },
      {
         "time":"2022-11-14T13:09:54",
         "id":"227286807851",
         "customIdentifier":"t-FraxTest",
         "amountOfQuoteCurrencyBeingOrdered":6.291,
         "priceInBasecoin":0.99333,
         "marketString":"gate",
         "Base":"USDT",
         "Quote":"FRAX",
         "isSellingInsteadOfBuying":true,
         "marketURL":"https://gate.io/trade/frax_usdt"
      },
      {
         "time":"2022-11-14T13:09:54",
         "id":"227286807835",
         "customIdentifier":"t-FraxTest",
         "amountOfQuoteCurrencyBeingOrdered":6.334,
         "priceInBasecoin":0.98667,
         "marketString":"gate",
         "Base":"USDT",
         "Quote":"FRAX",
         "isSellingInsteadOfBuying":false,
         "marketURL":"https://gate.io/trade/frax_usdt"
      },
      {
         "time":"2022-11-14T13:09:54",
         "id":"227286807823",
         "customIdentifier":"t-FraxTest",
         "amountOfQuoteCurrencyBeingOrdered":6.348,
         "priceInBasecoin":0.98444,
         "marketString":"gate",
         "Base":"USDT",
         "Quote":"FRAX",
         "isSellingInsteadOfBuying":false,
         "marketURL":"https://gate.io/trade/frax_usdt"
      },
      {
         "time":"2022-11-14T13:09:54",
         "id":"227286807816",
         "customIdentifier":"t-FraxTest",
         "amountOfQuoteCurrencyBeingOrdered":6.363,
         "priceInBasecoin":0.98222,
         "marketString":"gate",
         "Base":"USDT",
         "Quote":"FRAX",
         "isSellingInsteadOfBuying":false,
         "marketURL":"https://gate.io/trade/frax_usdt"
      },
      {
         "time":"2022-11-14T13:09:54",
         "id":"227286807762",
         "customIdentifier":"t-FraxTest",
         "amountOfQuoteCurrencyBeingOrdered":6.377,
         "priceInBasecoin":0.98,
         "marketString":"gate",
         "Base":"USDT",
         "Quote":"FRAX",
         "isSellingInsteadOfBuying":false,
         "marketURL":"https://gate.io/trade/frax_usdt"
      }
   ]
}

很明显有些东西在那里。

但我无法反序列化为同一个对象类。

顺便说一句，这是班级

Class gridTradingState
    ReadOnly Property bidInBase As Decimal
    ReadOnly Property askInBase As Decimal
    ReadOnly Property high As Decimal
    ReadOnly Property low As Decimal
    ReadOnly Property dateSinceLastTransactions As Date
    ReadOnly Property suggestedLow As Decimal
    ReadOnly Property suggestedhigh As Decimal
    ReadOnly Property Orders As OrderAlreadyPlacedAtanExchange()

    Public Shared Function creategridTradingOldState(market As MarketPairInanExchange, ordersInp As OrderAlreadyPlacedAtanExchange()) As gridTradingState
        Dim currentState = New gridTradingState

        'currentState._bidInBase = market.askbidInBase(False)
        'currentState._askInBase = market.askbidInBase(True)
        currentState._bidInBase = market.bidInBaseCoin
        currentState._askInBase = market.askInBaseCoin
        currentState._high = market.highInBaseCoin
        currentState._low = market.lowInBaseCoin
        currentState._Orders = ordersInp

        currentState._dateSinceLastTransactions = Now
        Return currentState
    End Function

    Public Sub updateSuggestedLowandHigh(suggestedLowNew As Decimal, suggestedHighNew As Decimal)
        _suggestedLow = suggestedLowNew
        _suggestedhigh = suggestedHighNew
    End Sub
End Class

有人要求提供最低限度可重复的样本。我删除订单。序列化的内容变成

{
    "bidInBase": 0.98735,
    "askInBase": 0.9918,
    "high": 0.99448,
    "low": 0.97528,
    "dateSinceLastTransactions": "2022-11-14T22:47:47.5532599+07:00",
    "suggestedLow": 0.0,
    "suggestedhigh": 0.0
}

问题依然存在。看来 dbc 正在做某事