jQuery Ajax parameters are not formatted properly

Question

I have a jQuery ajax call as listed below. I am formatting as suggested in Better JSON data structure

However I am getting an Internal Server Error. I think this is because the JSON data passed as argument to the server method is not proper. Any idea how we can fix this?

jQuery Ajax

 $( "#btnReceive" ).click(function() 
 { 

             var containerID = $('#txtContainerId').val();
             alert(containerID);

             alert('New4');

              var containerScanParameter = {};
              containerScanParameter.ContainerID = "A";
              containerScanParameter.AdvShipNotice = "B";
              containerScanParameter.LocationID = "B";
              containerScanParameter.UserID = "B";
              containerScanParameter.PlantCD = "B";


             $.ajax({
                    type: "POST",
                    url: "rcvScanTXAdd.aspx/GetResult",
                    contentType: "application/json; charset=utf-8",
                    dataType: "json",
                    data: containerScanParameter,
                    success: displayResultForLog,
                    error: errorFunction
                    });
        });

Server Method

    <WebMethod()> _
    Public Shared Function GetResult(ByVal containerScanParameter As ContainerScanParameter) As ReceiveScanMessage

        Dim receiveScanMessage As ReceiveScanMessage
        receiveScanMessage = New ReceiveScanMessage()

        Return receiveScanMessage

    End Function

Parameter

    Public Class ContainerScanParameter

    Private _ContainerID As String
    Property ContainerID() As String
        Get
            Return _ContainerID
        End Get

        Set(ByVal Value As String)
            _ContainerID = Value
        End Set

    End Property


    Private _AdvShipNotice As String
    Property AdvShipNotice() As String
        Get
            Return _AdvShipNotice
        End Get

        Set(ByVal Value As String)
            _AdvShipNotice = Value
        End Set

    End Property


    Private _LocationID As String
    Property LocationID() As String
        Get
            Return _LocationID
        End Get

        Set(ByVal Value As String)
            _LocationID = Value
        End Set

    End Property

    Private _UserID As String
    Property UserID() As String
        Get
            Return _UserID
        End Get

        Set(ByVal Value As String)
            _UserID = Value
        End Set

    End Property


    Private _PlantCD As String
    Property PlantCD() As String
        Get
            Return _PlantCD
        End Get

        Set(ByVal Value As String)
            _PlantCD = Value
        End Set

    End Property


 End Class

Request Headers

UPDATE

Resolved using following approach

1. Referred json2.js

           <script type="text/javascript"  src="../Javascript/json2.js"></script>  
   

2. Used Stringify as listed below

    data: JSON.stringify({ containerScanParameter: containerScanParameter }),
   

CODE

     $( "#btnReceive" ).click(function() 
        { 

             var containerID = $('#txtContainerId').val();
             alert(containerID);


              var containerScanParameter = {};
              containerScanParameter.ContainerID = "A";
              containerScanParameter.AdvShipNotice = "B";
              containerScanParameter.LocationID = "B";
              containerScanParameter.UserID = "B";
              containerScanParameter.PlantCD = "B";


             $.ajax({
                    type: "POST",
                    url: "rcvScanTXAdd.aspx/GetResult",
                    contentType: "application/json; charset=utf-8",
                    dataType: "json",
                    data: JSON.stringify({ containerScanParameter: containerScanParameter }),
                    success: displayResultForLog,
                    error: errorFunction
                    });
        });

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