<form id="form1" runat="server">
    <asp:ScriptManager ID="ScriptManager1" runat="server" />
    <asp:UpdatePanel ID="UpdatePanel1" runat="server">
        <ContentTemplate>
            <asp:Button ID="Button1" runat="server" Text="Kliknij..." OnClick="Button1_Click" />
        </ContentTemplate>
    </asp:UpdatePanel>
</form>
