Ajax events not working until page posts back

 I have a page that uses an update panel to refresh content.  The problem I am having is that buttons that are inside of the update panel never seem to return from the call they are making when the page loads the first time, but if I click a button outside of the update panel and post the whole page back, the buttons inside of the update panel work fine after that.  Has anyone ever heard of this happening and have any idea what I may be doing wrong?  The update panel is definately going through the events and updating the database etcetera but it just hangs when it finishes.

11/17/2008 2:15:38 PM
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Show us your code.  I had a lot of problems at first getting things to work properly

Mark this post as the "Answer" if it was the answer.
11/17/2008 4:33:22 PM

This is the page:

    <form id="form1" runat="server">
        <asp:ScriptManager ID="ScriptManager1" runat="server">


        <table class="FixedWrapped" id="Table1" style="WIDTH: 800px" cellspacing="1" cellpadding="1" border="0">
                <td valign="top" align="left">
                    <uc1:MenuControl id="MenuControl1" runat="server"></uc1:MenuControl>
                    <asp:Button ID="Button1" runat="server" Text="Button" />
        <asp:UpdatePanel ID="udpDetails" runat="server"><ContentTemplate>
            <div id="navmenu">
                    <asp:Label runat="server" ID="lblOrderDetails" Height="18px" Font-Size="medium" Font-Names="arial" Font-Bold="True">Order Details</asp:Label>
             <%--<asp:UpdatePanel ID="UpdatePanel2" runat="server" UpdateMode="Conditional">
                          <li><asp:Button ID="btnEditMode" runat="server" Width="65px" Height="23px" Font-Size="XX-Small" Font-Bold="True" Text="Edit" />
                          <li><asp:Button ID="btnCancelEdit" runat="server" Width="65px" Height="23px" Font-Size="XX-Small" Font-Bold="True" Text="Cancel" /></li>
                            <asp:Button ID="btnSaveChanges" runat="server" Width="65px" Height="23px" Font-Size="XX-Small" Font-Bold="True" Text="Submit" OnClientClick="submitRequests(phDetail.ID);" />
                            <cc1:ConfirmButtonExtender ID="btnSaveChanges_ConfirmButtonExtender"
                                runat="server" ConfirmText="Are you sure you want to submit?" Enabled="True" TargetControlID="btnSaveChanges">

                          <li class="buttonSpace"><asp:Button ID="btn3235s" runat="server" Width="85px" Height="23px" Font-Size="XX-Small" Font-Bold="True" Text="White Pages" /></li>
                          <li><asp:Button ID="btnRequests" runat="server" Width="85px" Height="23px" Font-Size="XX-Small" Font-Bold="True" Text="Requests" /></li>
                          <li><asp:Button ID="btnTearPages" runat="server" Width="85px" Height="23px" Font-Size="XX-Small" Font-Bold="True" Text="Tear Pages" /></li>
                          <li><asp:Button ID="btnAttachments" runat="server" Width="85px" Height="23px" Font-Size="XX-Small" Font-Bold="True" Text="Attachments" /></li>
                          <li class="buttonSpace">
                              <asp:Button ID="btnNormalView" runat="server" Width="85px" Height="23px" Font-Size="XX-Small" Font-Bold="True" Text="Detail View" />
                        <asp:button runat="server" Width="125px" ID="btnApproveOrder" Height="23px" Font-Size="XX-Small" Font-Bold="True" Text="Approve All" Visible="False"></asp:button>           
<%--                  </ContentTemplate>
              </asp:UpdatePanel>  --%>               
            <div id="navmenu2">
                    <td class="headerRowInfo" style="width:70px"><asp:Label runat="server" ID="Label1" Font-Underline="True" Font-Bold="True">Order#</asp:Label></td>
                    <td class="headerRowInfo" style="width:250px"><asp:Label runat="server" ID="label2" Font-Underline="True" Font-Bold="True">Client Name</asp:Label></td>
                    <td class="headerRowInfo" style="width:200px"><asp:Label runat="server" ID="Label3" Font-Underline="True" Font-Bold="True">Directory</asp:Label>
                    <asp:ImageButton runat="server" ImageUrl="images/mag2.gif" ToolTip="Directory Information" ID="ibtnDirInfo"></asp:ImageButton></td>
                    <td class="headerRowInfo" style="width:100px"><asp:Label runat="server" ID="Label4" Font-Underline="True" Font-Bold="True">Close</asp:Label></td>
                    <td class="headerRowInfo" style="width:58px"><asp:Label runat="server" ID="Label5" Font-Underline="True" Font-Bold="True">Issue</asp:Label></td>
                    <td class="headerRowInfo" style="width:100px; text-align:right;"><asp:Label runat="server" ID="Label6" Font-Underline="True" Font-Bold="True">Publisher</asp:Label></td>
                    <td class="headerRowInfo" style="width:70px; vertical-align:top;"><asp:Literal runat="server" ID="lblOrderNumber"></asp:Literal></td>
                    <td class="headerRowInfo" style="width:250px; vertical-align:top;"><asp:Literal runat="server" ID="lblClient"></asp:Literal></td>
                    <td class="headerRowInfo" style="width:200px; vertical-align:top;"><asp:Literal runat="server" ID="lblDirectory"></asp:Literal></td>                   
                    <td class="headerRowInfo" style="width:100px; vertical-align:top;"><asp:Literal runat="server" ID="lblClose"></asp:Literal></td>
                    <td class="headerRowInfo" style="width:58px; vertical-align:top;"><asp:Literal runat="server" ID="lblIssue"></asp:Literal></td>
                    <td class="headerRowInfo" style="width:100px; text-align:right; vertical-align:top;"><asp:Literal runat="server" ID="lblPublisher"></asp:Literal></td>                   
            <div style="text-align:right; width:800px;">
                <asp:Button runat="server" Width="125px" ID="btnPrinterFriendly" Height="23px" Font-Size="XX-Small" Text="Printer Friendly" ></asp:Button>
                <asp:Label runat="server" Width="216px" ForeColor="Green" ID="lblApproveMsg" Visible="False"></asp:Label>

    <div id="up_container">

        <asp:PlaceHolder ID="phDetail" runat="server" EnableViewState="true"></asp:PlaceHolder>



and here are the load, init, and a click event for one of the bottons:

     Private Sub order_details_new_Init(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Init

        If Not IsPostBack Then
            Me.btnEditMode.Enabled = Not mblnEditMode
            Me.btnSaveChanges.Enabled = mblnEditMode
            Me.btnCancelEdit.Enabled = mblnEditMode
        End If

    End Sub

     Private Sub order_details_new_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load

        If Not IsPostBack Then
            'Ensures user has been authenticated
            If Not Context.User.Identity.IsAuthenticated Then
                Response.Redirect("default.aspx", False)
            End If

            ScriptManager.GetCurrent(Page).AuthenticationService.Path = "/Authentication_JSON_AppService.axd"

            Page.ClientTarget = "ie5" 'disables browser sniffing (which doesn't work well) and allows controls to display correctly in Netscape v6/7

            Response.Expires = -1
            Response.AddHeader("Pragma", "No-Cache")
            Response.CacheControl = "no-cache"

            'redirects page to timedout.aspx after x amount of time
            'session.timeout is set in iis - website properties/configuration and is in minutes
            Response.AppendHeader("Refresh", Convert.ToString(Session.Timeout * 60) & "; URL=home.aspx")

        End If

    End Sub


    Private Sub btnEditMode_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnEditMode.Click

        mblnEditMode = Not mblnEditMode

        Me.btnEditMode.Enabled = Not mblnEditMode
        Me.btnSaveChanges.Enabled = mblnEditMode
        Me.btnCancelEdit.Enabled = mblnEditMode

        Me.thEnterNote.Visible = mblnEditMode
        For Each o As detailLine In Page.Form.FindControl("phDetail").Controls
            o.NoteCell.Visible = mblnEditMode
            o.NoteField.Visible = mblnEditMode
            o.NoteField.Enabled = mblnEditMode
            o.ApprovedCheckbox.Enabled = o.ApproveCheckEnabled
            o.ApprovedCheckbox.Visible = o.ApproveCheckEnabled


    End Sub


I didn't really want to post all the code since there are a lot of procedures and functions.  But these are the ones that could be a problem I suppose.  Basically clicking edit mode button makes some fields available to the user to enter some text and post back to database.   I'm also using an UpdatePanelAnimationExtender but that isn't the problem because I took that out and get the same results.  Stepping through the code, it does everything its supposed to but when it goes back to the page it's hung, as though it's still waiting for something to finish.  And as I said, if I click a button outside of the update panel and cause the whole page to be posted, the problem goes away.  Thanks for any help.  If more info is needed, let me know.



11/17/2008 5:03:17 PM

Sounds like a page lifecycle issue.

Keep in mind that your Button_Click event will fire after Page_Load and Page_Init. If you need Page_Load type code that runs after an OnClick event, use the PreRender event instead.

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11/18/2008 2:59:40 PM

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