Fange værdi fra dynamisk control inden nye dynamisk controls afvikles

Vil gerne kunne fange værdier af vilkårlige dynamiske controls inden, næste sæt af dynamiske controls afvikles.

Hvad er fidussen?

?:o) karsten_larsen

Her følger min demo kode:
    ' START CONTROL
    Protected Sub btnStart_Click(sender As Object, e As EventArgs) Handles btnStart.Click
        If Page.IsPostBack = True Then
            Session("Number") = 1
            DesignShow(CType(Session("Number"), Integer))
        End If
    End Sub

    ' FORRIGE CONTROL
    Protected Sub btnBack_Click(sender As Object, e As EventArgs) Handles btnBack.Click
        If Page.IsPostBack = True Then
            Dim a As Integer = 0
            a = CType(Session("Number"), Integer)
            a = a - 1
            If a < 1 Then
                a = 1
            End If
            Session("Number") = CType(a, String)
            DesignShow(CType(Session("Number"), Integer))
        End If
    End Sub

    ' NAESTE CONTROL
    Protected Sub btnNext_Click(sender As Object, e As EventArgs) Handles btnNext.Click
        If Page.IsPostBack = True Then

            ' Her skal værdier fanges fra netop afviklet dynamiske control
            '?????????????????????????????????????????????????????????????

            Dim a As Integer = 0
            a = CType(Session("Number"), Integer)
            a = a + 1
            Session("Number") = CType(a, String)
            DesignShow(CType(Session("Number"), Integer))
        End If
    End Sub


    ' AFVIKLING AF DYNAMISKE CONTROL
    Sub DesignShow(ByVal Number As Integer)

        Label1.Text = Number
        Dim i As Integer = 0

        If Number = 1 Then
            DesignTextBox(1)
        End If
        If Number = 2 Then
            DesignTextBox(1)
            DesignTextBox(2)
        End If
        If Number = 3 Then
            DesignRadioButtonList(1, 3)
        End If
        'etc
    End Sub

    ' DESIGN AF CONTROL - TEXTBOX
    Sub DesignTextBox(ByVal NumberId As Integer)
        Dim t As New TextBox()
        t.ID = "tb" & NumberId
        Me.PlaceHolder1.Controls.Add(t)
    End Sub

    ' DESIGN AF RADIOBUTTONLIST
    Sub DesignRadioButtonList(ByVal NumberId As Integer, ByVal AntalValg As Integer)
        Dim r As New RadioButtonList()
        r.ID = "rbl" & NumberId
        r.RepeatDirection = RepeatDirection.Horizontal
        Dim i As Integer = 0
        For i = 1 To AntalValg
            r.Items.Add(New ListItem(AntalValg.ToString, i.ToString()))
        Next
        Me.PlaceHolder1.Controls.Add(r)
    End Sub