Json 反序列化键/值字典

Question

I saw the "Similar question" but trying all of them did not solve my problem. I have a Json like this

{
    "externalId": "pobj124",
    "dossierNumber": "Test 20210216",
    "issuedDate": "2021-01-28T23:00:00+00:00",
    "issuedPlace": "New-York",
    "properties": {
        "documentTypeId": 7,
        "countryLayout": "US"
    }
}

The properties is an unknown number of "name": "value". Not knowing neither the name nor the value. My class is defined as

<Serializable>
Public Class Document
    Public Property externalId As String
    Public Property dossierNumber As String
    Public Property issuedDate As Date
    Public Property issuedPlace As String
    Public Property properties As IDictionary(Of String, String)
End Class

The calling code is

Private Function DeserializeJson(json As String) As Document
    Return JsonConvert.DeserializeObject(Of Document)(json)
End Function

It seems that it is not the right way to deserialize a dictionary. Error is

Cannot deserialize the current JSON array (eg [1,2,3]) into type 'Document' because the type requires a JSON object (eg {"name":"value"}) to deserialize correctly. To fix this error either change the JSON to a JSON object (eg {"name":"value"}) or change the deserialized type to an array or a type that implements a collection interface (eg ICollection, IList) like List that can be deserialized from a JSON array. JsonArrayAttribute can also be added to the type to force it to deserialize from a JSON array.

What I've tried so far:

Public Property properties As IDictionary(Of String, String)
Public Property properties As List(Of KeyValuePair(Of String, String))
Public Property properties As Dictionary(Of String, String)
Public Property properties() As KeyValuePair(Of String, String)

Answer 1

have tried Something similar like below on vb.net. Use BsonTypeMapper.MapToDotNetValue.

JsonConvert.DeserializeObject(BsonTypeMapper.MapToDotNetValue( a(i) .ToString().Replace("\n", "||")))

Answer 2

The error was in the definition of the underlying classes. One was defined as

Public Class PartialClass
    Public Property goods() As Product
End Class

Public Class Product
    Public Property caracteristics As IDictionnary(Of String, String)
End Class

when it should be

Public Class PartialClass
    Public Property goods As List(Of Product)
End Class

Answer 3

This drove me to insanity when I was trying to figure it out with no answers. What worked for me is I removed “Property” from Arrays and Lists within the class and left the Public Keyword only.