ASP.NET AJAX Control Toolkit

Re: Known Issue & Workaround: Extenders no longer work in templated controls

ChhayaBhat — Tue, 08 Jul 2008 22:09:08 GMT

Hello, I am facing a problem while using the NumericUpDown Extender from within the EditItemTemplate of a FormView. Is there a workaround to this ? I have tried doing a FormView.DataBind() as well as EnsureChildControls() in the Page_Load and it still does not work....Please help ! The problem is that although the extender renders, the target textbox for the extender disappears when the page loads !

Re: Known Issue & Workaround: Extenders no longer work in templated controls

Ed.C — Fri, 10 Nov 2006 18:31:53 GMT

" So can someone answer the question, is this supposed to be fixed in beta 2?"

Yes, however the problem still exists from time to time in my application. You are not alone.

Re: Known Issue & Workaround: Extenders no longer work in templated controls

carpenocturnum — Fri, 10 Nov 2006 06:09:09 GMT

hmmm just tried it out, and it does appear as though the issue has been resolved, at least for the way I was using the controls.

Re: Known Issue & Workaround: Extenders no longer work in templated controls

carpenocturnum — Fri, 10 Nov 2006 00:17:43 GMT

So can someone answer the question, is this supposed to be fixed in beta 2?

Re: Known Issue & Workaround: Extenders no longer work in templated controls

jolifam77 — Thu, 09 Nov 2006 23:48:30 GMT

I have something similar to this, but in a gridview instead of a detailsview. It works in Netscape, but not IE...It's gotta be a bug. I'm seriously considering using Atlas for this one rather than the new Beta.

Re: Known Issue & Workaround: Extenders no longer work in templated controls

jcnet — Thu, 09 Nov 2006 18:59:42 GMT

I did not know you could put the panel outside the inserttemplate... it would be great if you could.

If anybody has a working popup calendar with a targetid pointing to webcontrol textbox (like formview) - I'd like to see it. I download Ajax Beta 2.0 and I can't get any combination to work. Even better if working with a MasterPage.

Re: Known Issue & Workaround: Extenders no longer work in templated controls

dlherren — Thu, 09 Nov 2006 16:20:08 GMT

I am experiencing a similiar issue using a PopupControlExtender within an InsertItemTemplate of a DetailsView. My issue, within the Calendar1_SelectionChanged method, is that PopupStartDate is not declared. Here is a code snippet:

  <asp:Content ID="Content1" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">

    <asp:DetailsView ID="DetailsView1" runat="server" DataSourceID="ObjectDataSource1" DefaultMode="Insert" >
        <Fields>
            <asp:TemplateField HeaderText="Planned Start Date">
                <EditItemTemplate>
                    <asp:TextBox ID="TextBox1" runat="server" Text='<%# Bind("PlannedStartDate") %>'></asp:TextBox>
                </EditItemTemplate>
                <InsertItemTemplate>
                    <asp:TextBox ID="TextBox2" runat="server" Text='<%# Bind("PlannedStartDate") %>'></asp:TextBox>

                    <ajaxToolkit:PopupControlExtender ID="PopupStartDate" runat="server" TargetControlID="TextBox1" PopupControlID="panStartDate" >
                    </ajaxToolkit:PopupControlExtender>

                </InsertItemTemplate>
                <ItemTemplate>
                    <asp:Label ID="Label1" runat="server" Text='<%# Bind("PlannedStartDate") %>'></asp:Label>
                </ItemTemplate>
            </asp:TemplateField>
            <asp:CommandField ShowInsertButton="True" />
        </Fields>
    </asp:DetailsView>

    <aspx:UpdatePanel ID="PanStartDate" runat="server">
        <ContentTemplate>
            <center>
                <asp:Calendar ID="Calendar1" runat="server" OnSelectionChanged="Calendar1_SelectionChanged">
                </asp:Calendar>
            </center>
        </ContentTemplate>
    </aspx:UpdatePanel>

</asp:Content>

Any ideas or workarounds would be great!

Re: Known Issue & Workaround: Extenders no longer work in templated controls

jcnet — Thu, 09 Nov 2006 13:37:57 GMT

Yaba, can you share a code sample? Thank you!

I have a PopupControlExtender calling a calendar under a panel l within a formview. I've tried everything and can't get it to work. Oh, and Im also trying to place the script manager in a master page which introduces other issues.

Thanks.

Re: Known Issue & Workaround: Extenders no longer work in templated controls

aschreiber2 — Wed, 08 Nov 2006 01:34:50 GMT

AutocompleteExtender no longer works either. I downloaded the Beta2 and nothing happens. No script errors. Nothing.

Re: Known Issue & Workaround: Extenders no longer work in templated controls

zati — Tue, 07 Nov 2006 09:42:12 GMT

Is this supposed to be fixed in beta 2 ? I still have problems with CollapsiblePanels inside GridView/Repeaters...

Re: Known Issue & Workaround: Extenders no longer work in templated controls

Ed.C — Mon, 06 Nov 2006 13:51:57 GMT

fawlty:
I hope a fix for this comes out soon, as I assume this is important for many of us. It's funny that the HoverMenu showcase page on the website had to remove functionality because of this bug...

Exactly! Between that and regular menus not working in UpdatePanels my next application is delayed until a patch comes out.

Re: Known Issue & Workaround: Extenders no longer work in templated controls

fawlty — Thu, 02 Nov 2006 23:05:53 GMT

I hope a fix for this comes out soon, as I assume this is important for many of us. It's funny that the HoverMenu showcase page on the website had to remove functionality because of this bug...

Re: Known Issue & Workaround: Extenders no longer work in templated controls

h0mer — Thu, 02 Nov 2006 21:24:40 GMT

Hi, i have a custom control with a texbox , a panel with an updatepanel and a calendar inside and a _PopupControlExtender. i tried to put the Onload method that you said, but i recieve a javascript error here:

Sys.Application.add_init(function() {
$create(AjaxControlToolkit.PopupControlBehavior, {"DynamicServicePath":"/WebSite1/Default4.aspx","id":"ctl00_ContentPlaceHolder1_BoxFechaCalendario2_1_PopupControlExtender1","PopupControlID":"ctl00_ContentPlaceHolder1_BoxFechaCalendario2_1_Panel1","Position":3}, null, null, $get('ctl00_ContentPlaceHolder1_BoxFechaCalendario2_1_DateTextBox'));
});

Sys.ArgumentException: Value must not be null for Controls and Behaviors.

My custom web control code is the following:

public class BoxFechaCalendario2 : WebControl, INamingContainer
        {

            private TextBox _textbox;
            private Calendar _calendario;
            private UpdatePanel _UpdatePanel;
            private Panel _Panel;
            private PopupControlExtender _PopupControlExtender;

            protected override void OnLoad(EventArgs e)
            {
                base.OnLoad(e);
                EnsureChildControls();
            }

            protected override void CreateChildControls()
            {
                _textbox = new TextBox();
                _textbox.Width = 75;
                _textbox.ID = "DateTextBox";


                _calendario = new Calendar();
                _calendario.ID = "calendar1";
                _calendario.SelectionChanged += new EventHandler(_calendario_SelectionChanged);



                _Panel = new Panel();
                _Panel.ID = "Panel1";
                _Panel.CssClass = "popupControl";

                _UpdatePanel = new UpdatePanel();
                _UpdatePanel.ID = "UpdatePanel1";

                _PopupControlExtender = new PopupControlExtender();
                _PopupControlExtender.ID = "PopupControlExtender1";
                _PopupControlExtender.PopupControlID = "Panel1";
                _PopupControlExtender.Position = PopupControlPopupPosition.Bottom;
                _PopupControlExtender.TargetControlID = "DateTextBox";


                _UpdatePanel.ContentTemplateContainer.Controls.Add(_calendario);
                _Panel.Controls.Add(_UpdatePanel);

                this.Controls.Add(_textbox);
                this.Controls.Add(_PopupControlExtender);
                this.Controls.Add(_Panel);

                base.CreateChildControls();
            }

            protected override void RenderContents(HtmlTextWriter output)
            {
                EnsureChildControls();
                AddAttributesToRender(output);

                _PopupControlExtender.RenderControl(output);
                _textbox.RenderControl(output);
        _Panel.RenderControl(output);

            }

            void _calendario_SelectionChanged(object sender, EventArgs e)
            {

                _PopupControlExtender.Commit(_calendario.SelectedDate.ToShortDateString());

            }


    }

Re: Known Issue & Workaround: Extenders no longer work in templated controls

DuctTapeMan2.0 — Wed, 01 Nov 2006 17:23:14 GMT

  Yabadabadoo:

The workaround which involves calling the Controls collection is a little misleading. The reason why it works is because the Controls accessor is generally overridden in Microsoft controls to also call the function EnsureChildControls (look at the source code for the AccordionPane). I exposed a property in my custom webcontrol that causes EnsureChildControls to be called and I called it in Page_Load as suggested, and voila, the PopupControlExtender works.

It's actually much easier than that. Adding this simple code snippet in any control that is affected by this problem should correct it without any ill side effects:

protected override void OnLoad(EventArgs e)
{
	base.OnLoad(e);
	EnsureChildControls();
}

This just ensures that the control tree is created well before the PreRender method in time for the ScriptManager to see it.

Re: Known Issue & Workaround: Extenders no longer work in templated controls

dudedude — Wed, 01 Nov 2006 16:42:31 GMT

dudedude:

this issue is a big pain. This MSDN blog example no longer works: http://blogs.msdn.com/delay/archive/2006/09/19/762609.aspx
I could not see how to fix it.
Any ideas?

specifically, I've decorated the web service method with

[System.Web.Services.WebMethod]

[Microsoft.Web.Script.Services.ScriptMethod]

as advised.

I've removed the DataSource, and declared it on OnLoad:

protected override void OnLoad(EventArgs e)

{

base.OnLoad(e);

this.DataList1.DataSourceID="XmlDataSource1";

this.DataList1.DataBind();

}

But when you click "ok" on a popup, and then click another item, it gives an error.