<asp:DeclarativeCatalogPart ID="DeclarativeCatalogPart1" runat="server">
    <WebPartsTemplate>
        <asp:Calendar ID="Calendar1" runat="server" title="My Calendar" />
        <asp:FileUpload ID="FileUpload1" runat="server" title="Upload Files" />
    </WebPartsTemplate>
</asp:DeclarativeCatalogPart>