<form id="Form1" method="post" runat="server">
			<asp:hyperlink id=lnkTest runat="server" navigateurl='<%#CreateLink( 
' "nextsite.aspx")%>'>
				Testlink
			</asp:hyperlink><br>
			<asp:linkbutton runat="server" id="btnPostback">
				Postback
			</asp:linkbutton>
		</form>

    Private Sub Page_Load(ByVal sender As System.Object, ByVal e As _
      System.EventArgs) Handles MyBase.Load
        ' Hier Benutzercode zur Seiteninitialisierung einfügen
        lnkTest.DataBind() 'oder Page.DataBind()
 
    End Sub
 
    Protected Overridable Function CreateLink(ByVal basisUrl$) As String
        If IsPostBack Then
            Return basisUrl & "?param=nachPostback"
        Else
            Return basisUrl & "?param=ohnePostback"
        End If
    End Function