<asp:ScriptManager ID="ScriptManager1" runat="server"> </asp:ScriptManager> <asp:UpdatePanel runat="server"> <Triggers> <asp:PostBackTrigger ControlID="Button1" /> </Triggers> <ContentTemplate> <asp:MultiView ID="MultiView1" runat="server" ActiveViewIndex="0"> <asp:View ID="View1" runat="server"> <asp:Button Text="next" runat="server" onclick="Unnamed1_Click" /> </asp:View> <asp:View ID="View2" runat="server"> <asp:Button ID="Button1" runat="server" onclick="Button1_Click" Text="Button" style="width: 56px" /> <asp:FileUpload ID="fileupload2" runat="server" /> </asp:View> </asp:MultiView> </Conten