Default1.aspx
codice:
    <form id="form1" runat="server">
    <div>
         <asp:TextBox ID="tb" runat="server"></asp:TextBox>
         <asp:Button ID="bt1" runat="server" Text="Pag.Successiva" PostBackUrl="Default2.aspx" />
    </div>
    </form>

Default2.aspx
codice:
    <form id="form1" runat="server">
    <div>
    Nella pagina precedente hai scritto:
    <asp:Label Font-Bold="true" ID="lb" runat="server"></asp:Label>
    </div>
    </form>


    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        If Not Page.PreviousPage Is Nothing Then
            Dim tb As New TextBox
            tb = CType(PreviousPage.FindControl("tb"), TextBox)

            If Not tb Is Nothing Then
                lb.Text = tb.Text
                lb.Text.ToUpper()
            End If
        End If
    End Sub