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[CLOSED] AjaxEvents Question

  1. #1
    Sep 01, 2008, 5:11 PM

    [CLOSED] AjaxEvents Question

    Hello,

    Quick question regarding the AjaxEvents.

    Example.aspx:

    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"  "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
    protected void chkTest_Checked(object sender, AjaxEventArgs e)
    {
        phTest.Visible = chkTest.Checked;
    }
</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1" runat="server">
    <title>Untitled Page</title>
</head>
<body>
    <form id="form1" runat="server">
        <ext:ScriptManager runat="server" ScriptMode="Debug" />
            <ExtJS:CheckBox ID="chkTest" runat="server">
                <AjaxEvents>
                    <Check OnEvent="chkTest_Checked" />
                </AjaxEvents>
            </ExtJS:CheckBox>&amp;nbsp;Test?
            <asp:PlaceHolder ID="phTest" runat="server" Visible="False">
                Yes Test!
            </asp:PlaceHolder>
    </form>
</body>
</html>
    Is the above possible?

    Cheers,
    Timothy
  2. #2
    Sep 01, 2008, 5:22 PM

    RE: [CLOSED] AjaxEvents Question

    Nope. With <AjaxEvents> you can only send back JavaScript in the response. And the JavaScript must be registered with the <ext:ScriptManager>. No html is sent back in the response.

    Setting Coolite Toolkit control Properties or calling Methods will automatically create the necessary JavaScript. We can not (or do not) create JavaScript for non-Coolite controls.

    Your "phTest" is not Visible on initial Page_load, so no html or DOM elements would be added to the Page. On the ajax response no html is returned, so setting phTest.Visible=true would effectively do nothing, at least from a user interface point of view.
    Geoffrey McGill
    Founder
    Ext.NETASP.NET UI Component framework
    RetypeDocumentation website generator
    MojeeLightning fast Emoji library for .NET
    Ext.NET Examples|Ext.NET API Docs|ExtJS API Docs|Twitter
  3. #3
    Sep 01, 2008, 5:27 PM

    RE: [CLOSED] AjaxEvents Question

    Good to know!

    You have any suggestions on how to hide a region then? Should I use an Ext Panel instead of an ASP PlaceHolder ?

    Cheers,
    Timothy
  4. #4
    Sep 01, 2008, 5:48 PM

    RE: [CLOSED] AjaxEvents Question

    You could add a "hidden" <ext:Panel> with Header and Border set to "False", then call the .SetVisibility() Method in the AjaxEvent.

    Example

    <script runat="server">
    protected void chkTest_Checked(object sender, AjaxEventArgs e)
    {
        this.Panel1.SetVisible(chkTest.Checked);
    }
</script>

<ext:Panel 
    ID="Panel1" 
    runat="server" 
    Hidden="True"
    Header="False"
    Border="False">
    <Content>Yes Test!</Content>
</ext:Panel>
    Hope this helps.

    Geoffrey McGill
    Founder
    Ext.NETASP.NET UI Component framework
    RetypeDocumentation website generator
    MojeeLightning fast Emoji library for .NET
    Ext.NET Examples|Ext.NET API Docs|ExtJS API Docs|Twitter

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