RadioButtonList through Tabs

I am using Telerik RadTab controls. I have taken three tabs.

In my application in RadioButtonList I have three radio buttons, if I click the REPLACEMENt radio button it will show next tab ADTAF

<telerik:RadTabStrip ID="RadTabStrip1" runat="server" Skin="Inox" MultiPageID="RadMultiPage1"
    SelectedIndex="0" Height="16px" Width="710px">
    <Tabs>
        <telerik:RadTab Text="Purchase Details" Selected="True">
        </telerik:RadTab>
        <telerik:RadTab Text="CERF">
        </telerik:RadTab>
        <telerik:RadTab Text="ADTAF">
        </telerik:RadTab>
    </Tabs>
</telerik:RadTabStrip>

<asp:RadioButtonList ID="radiobtnlistcerf" runat="server" Width="300px" 
    Height="40px" onselectedindexchanged="radiobtnlistcerf_SelectedIndexChanged">
    <asp:ListItem>New addition</asp:ListItem>
    <asp:ListItem>Replacement</as开发者_高级运维p:ListItem>
    <asp:ListItem>Addition to main asset</asp:ListItem>
</asp:RadioButtonList>

How to show next tab if I click on Replacement radio button?

Your question isn't exactly clear, but I think you mean that you want it to show 'CERF' next instead of 'ADTAF', in which case you would need to increment the selected tab index. If you wanted it to go through the tabs in order you could do something like:

RadTabStrip1.SelectedIndex = (RadTabStrip1.SelectedIndex + 1)%(RadTabStrip1.Tabs.Count)

Maybe if you showed the code for radiobtnlistcerf_SelectedIndexChanged it would be clearer why its not working