Sounds like you're looking for
the MultiView
control[
^].
<asp:MultiView id="Payment_Panels" runat="server">
<asp:View id="Bank_Mobile" runat="server">
...
</asp:View>
<asp:View id="Mobile_Payment" runat="server">
...
</asp:View>
<asp:View id="CreditCardPanel" runat="server">
...
</asp:View>
</asp:MultiView>
private void LoadPaymentPanels()
{
Payment_Panels.ActiveViewIndex = ddl_BuyCredits_PaymentMethodTypes.SelectedIndex;
}