[2008] ViewState To Store List Of

[corydg]

I'm working with ASP.net 3.5 and having a problem with adding an item to a List of a Structure in the ViewState.

I've declared the item to be added as New, but it complains when trying to insert into the viewstate object.

here's the code...

        Public Property QuestionsCorrect() As QuestionAnswer
            Get
                Return ViewState("QuestionsCorrect")
            End Get
            Set(ByVal value As QuestionAnswer)
                ViewState("QuestionsCorrect") = value
            End Set
        End Property

       Public Sub ProcessAnswers()
            Dim qA As New QABase
            Dim answerLetter As String = hidClickedAnswer.Value
            Select Case answerLetter
                Case "A"
                    If ActiveQuestionAnswer = 0 Then
                        qA.Correct = True
                    Else
                        qA.Correct = False
                    End If
                Case "B"
                    If ActiveQuestionAnswer = 1 Then
                        qA.Correct = True
                    Else
                        qA.Correct = False
                    End If
                Case "C"
                    If ActiveQuestionAnswer = 2 Then
                        qA.Correct = True
                    Else
                        qA.Correct = False
                    End If
                Case "D"
                    If ActiveQuestionAnswer = 3 Then
                        qA.Correct = True
                    Else
                        qA.Correct = False
                    End If
                Case "E"
                    If ActiveQuestionAnswer = 4 Then
                        qA.Correct = True
                    Else
                        qA.Correct = False
                    End If
            End Select
            qA.QuestionId = ActiveQuestion
            QuestionsCorrect.QuestionList.Add(qA)
            If ActiveQuestion < 10 Then
                ActiveQuestion = ActiveQuestion + 1
            End If
        End Sub

Here's the class for all that

<Serializable()> _
Public Class QuestionAnswer
    Private _QuestionList As New List(Of QABase)
    Public Property QuestionList() As List(Of QABase)
        Get
            Return _QuestionList
        End Get
        Set(ByVal value As List(Of QABase))
            _QuestionList = value
        End Set
    End Property
End Class

<Serializable()> _
    Public Class QABase
    Private _QuestionId As Integer
    Private _Correct As Boolean

    Public Property QuestionId()
        Get
            Return _QuestionId
        End Get
        Set(ByVal value)
            _QuestionId = value
        End Set
    End Property
    Public Property Correct()
        Get
            Return _Correct
        End Get
        Set(ByVal value)
            _Correct = value
        End Set
    End Property
End Class

i've been working on this for sometime and can't figure it out...any help is greatly appreciated

[brin351]

Is the Public Property QuestionsCorrect() that sets/gets the viewstate in a code file in the app_code folder? because viewstate is page specific and I don't think you can get access to it that way. I think you could pass a refrence of the page to the property and use it to gain access but Im not sure...

Some more info on the actual error would help

[mendhak]

Set Option Strict On and declare your public properties properly.