VB.net deserialize JSON with JSON.net - json

Question

I look for a solution to my problem since 2 weeks without solution.
I would like to deserialize JSON with JSON.NET, but noway ...
I create class but when i deserialize the object stay empty (Nothing).
Here the JSON :
{"plannifReponse":
{"#competence":"Abonnement","plannifDonnees":
{"entry":
[
{"key":"2013-8-11T00:00","value":
{"creneaux":
[
{"#jour":"2013-8-11T00:00","#heure":"09","#minute":"30","nombreRessources":10},
{"#jour":"2013-8-11T00:00","#heure":"10","#minute":"30","nombreRessources":2},
{"#jour":"2013-8-11T00:00","#heure":"17","#minute":"30","nombreRessources":5},
{"#jour":"2013-8-11T00:00","#heure":"20","#minute":"30","nombreRessources":5},
{"#jour":"2013-8-11T00:00","#heure":"21","#minute":"00","nombreRessources":16}
]
}
},
{"key":"2013-7-30T00:00","value":
{"creneaux":
[{"#jour":"2013-7-30T00:00","#heure":"12","#minute":"00","nombreRessources":4},{"#jour":"2013-7-30T00:00","#heure":"12","#minute":"15","nombreRessources":10},{"#jour":"2013-7-30T00:00","#heure":"12","#minute":"30","nombreRessources":3},{"#jour":"2013-7-30T00:00","#heure":"14","#minute":"00","nombreRessources":8},{"#jour":"2013-7-30T00:00","#heure":"18","#minute":"30","nombreRessources":10}]}}]}}}
For this i translate with that Class:
Public Class plannifReponse
Public competence As String
Public plannifDonnees As Dictionary(Of String, ListCreneaux)
End Class
Public Class ListCreneaux
Public listCreneaux() As Creneau
End Class
Public Class Creneau
Public jour As String
Public heure As String
Public minute As String
Public nombreRessources As Integer
Public Sub New(ByVal _jour, ByVal _heure, ByVal _minute, ByVal _nombreRessources)
jour = _jour
heure = _heure
minute = _minute
nombreRessources = _nombreRessources
End Sub
End Class
And the code :
Dim prev As plannifReponse = JsonConvert.DeserializeObject(Of plannifReponse)(My_dispos)
But it doesn't work, no error message, but prev stay "Nothing"
For help, here the source object use to serialise (it is on Java)
public class OutputPlannif {
private String competence;
private HashMap<String, ListCreneaux> plannifDonnees;
}
public class ListCreneaux {
private ArrayList<Creneau> listCrenaux;
}
public class Creneau {
private String jour;
private String heure;
private String minute;
private int nombreRessources;
}
If anyone have an idea...
Thanks
Matt

Answer 1

You should create a series of classes which map the JSON you want to deserialize. There are tools (such as this one) which can do that for you. Or you can do it by hand, taking one member at a time, with the result shown below:
Public Class StackOverflow_17956746
Public Class OutputPlannif
<JsonProperty("plannifReponse")> _
Public PlannifReponse As PlannifReponse
End Class
Public Class PlannifReponse
<JsonProperty("#competence")> _
Public Competence As String
<JsonProperty("plannifDonnees")> _
Public PlannifDonnees As PlannifDonnees
End Class
Public Class PlannifDonnees
<JsonProperty("entry")> _
Public Entries As List(Of Entry)
End Class
Public Class Entry
<JsonProperty("key")> _
Public Key As String
<JsonProperty("value")> _
Public Value As Value
End Class
Public Class Value
<JsonProperty("creneaux")> _
Public ListCreneaux As List(Of Creneau)
End Class
Public Class Creneau
<JsonProperty("#jour")> _
Public Jour As String
<JsonProperty("#heure")> _
Public Heure As String
<JsonProperty("#minute")> _
Public Minute As String
<JsonProperty("nomberRessources")> _
Public NombreRessources As Integer
End Class
Const JSON As String = "{" & vbCrLf & _
" ""plannifReponse"":" & vbCrLf & _
"{""#competence"":""Abonnement"",""plannifDonnees"":" & vbCrLf & _
"{""entry"":" & vbCrLf & _
"[" & vbCrLf & _
"{""key"":""2013-8-11T00:00"",""value"":" & vbCrLf & _
"{""creneaux"":" & vbCrLf & _
"[" & vbCrLf & _
"{""#jour"":""2013-8-11T00:00"",""#heure"":""09"",""#minute"":""30"",""nombreRessources"":10}," & vbCrLf & _
"{""#jour"":""2013-8-11T00:00"",""#heure"":""10"",""#minute"":""30"",""nombreRessources"":2}," & vbCrLf & _
"{""#jour"":""2013-8-11T00:00"",""#heure"":""17"",""#minute"":""30"",""nombreRessources"":5}," & vbCrLf & _
"{""#jour"":""2013-8-11T00:00"",""#heure"":""20"",""#minute"":""30"",""nombreRessources"":5}," & vbCrLf & _
"{""#jour"":""2013-8-11T00:00"",""#heure"":""21"",""#minute"":""00"",""nombreRessources"":16}" & vbCrLf & _
"]" & vbCrLf & _
"}" & vbCrLf & _
"}," & vbCrLf & _
"{""key"":""2013-7-30T00:00"",""value"":" & vbCrLf & _
"{""creneaux"":" & vbCrLf & _
"[{""#jour"":""2013-7-30T00:00"",""#heure"":""12"",""#minute"":""00"",""nombreRessources"":4},{""#jour"":""2013-7-30T00:00"",""#heure"":""12"",""#minute"":""15"",""nombreRessources"":10},{""#jour"":""2013-7-30T00:00"",""#heure"":""12"",""#minute"":""30"",""nombreRessources"":3},{""#jour"":""2013-7-30T00:00"",""#heure"":""14"",""#minute"":""00"",""nombreRessources"":8},{""#jour"":""2013-7-30T00:00"",""#heure"":""18"",""#minute"":""30"",""nombreRessources"":10}]}}]}}}"
Public Shared Sub Test()
Dim output As OutputPlannif
output = JsonConvert.DeserializeObject(Of OutputPlannif)(JSON)
Console.WriteLine(output)
End Sub
End Class