Defining Declaratively
RadMultiPage provides a convenient mechanism that lets you define its structure in-line - directly in the .ASPX/.ASCX file.To do this, you need to enclose every RadPageView definition in the <telerik:RadPageView> ... </telerik:RadPageView> tags:
<telerik:RadMultiPage id="RadMultiPage1" runat="server" SelectedIndex="0" Width="400">
<telerik:RadPageView id="Pageview1" runat="server">
...
</telerik:RadPageView>
<telerik:RadPageView id="Pageview2" runat="server">
...
</telerik:RadPageView>
<telerik:RadPageView id="Pageview3" runat="server">
...
</telerik:RadPageView>
</telerik:RadMultiPage>