Troubleshooting issues with jQuery and the UpdatePanel

I am developing an ASP.NET4 C# web application with jQuery in the page that uses a master page. My content placeholder is within an update panel, but the script does not work when there are postbacks.

Master Page

<body>
<form runat ="server">    
    <br />
    <asp:ScriptManager ID="ScriptManager1" runat="server">
    <Scripts>
    <asp:ScriptReference Path="~/Scripts/jquery-1.4.4.min.js" />
    <asp:ScriptReference Path="~/Scripts/jquery-ui-1.8.6.custom.min.js" />
    <asp:ScriptReference Path="~/Scripts/jquery-ui-timepicker-addon.js" />
    </Scripts>
    </asp:ScriptManager>
    <asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="Conditional">
        <ContentTemplate>
            <asp:ContentPlaceHolder ID="ContentPlaceHolder1" runat="server">
            </asp:ContentPlaceHolder>
        </ContentTemplate>          
</asp:UpdatePanel>
</form>    
</body>

Content Page

<asp:Content ID="Content1" ContentPlaceHolderID="head" runat="server">
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" runat="server">
<asp:MultiView ID="MultiView1" runat="server" ActiveViewIndex="0">
    <asp:View ID="View1" runat="server">
        <asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="Button" />
        <br />
        <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox><script type="text/javascript">

                                                                    $('#<%= TextBox1.ClientID %>').timepicker({
                                                                        ampm: true,
                                                                        hourMin: 8,
                                                                        hourMax: 23
                                                                    });
        </script>
    </asp:View>
    <asp:View ID="View2" runat="server">      
        <asp:TextBox ID="TextBox3" runat="server"></asp:TextBox><script type="text/javascript">

                                                                    $('#<%= TextBox3.ClientID %>').timepicker({
                                                                        ampm: true,
                                                                        hourMin: 8,
                                                                        hourMax: 23
                                                                    });
        </script>
    </asp:View>

Answer №1

It is recommended to place your UpdatePanel outside of the MasterPage.

By enclosing an entire page within an UpdatePanel, you are increasing the amount of data transferred with each partial postback, resulting in decreased performance.

UpdatePanels should be used specifically for wrapping small and relevant areas of a page.

Once you have moved the UpdatePanel to the content page, make sure to re-insert your JQuery statement inside the UpdatePanel to prevent it from being lost during postbacks. Here's an example:

        <ContentTemplate>
            <script type="text/javascript" language="javascript">
                Sys.Application.add_load(YOUR_FUNCTION_NAME);
            </script>

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