| Callback Panel - How It Works
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OboutInc.oboutAJAXPage
namespace
<%@ Register TagPrefix="oajax" Namespace="OboutInc" Assembly="obout_AJAXPage" %>
Example:
<oajax:CallbackPanel runat="server" ID="callbackPanel1">
<content>
some content
</content>
<loading>
Loading...please wait
</loading>
</oajax:CallbackPanel>
CallbackPanel has 2 elements:
-
content element can contain contain html, js, css and
other server controls - like Obout Calendar, Obout EasyMenu, ASP.NET controls (ASP Textbox, ASP DropDownList, etc.).
-
loading
element is optional and it can include the html to display while the panel is loading.
If ommited, a default "Loading..." text is shown and all styles from content
element are applied to the loading element.
It is visible only when the callback panel is updated using client-side UpdatePanel method.
Both content and loading elements can contain style definitions.
<oajax:CallbackPanel runat="server" ID="callbackPanel1">
<content style="border:1px solid gray;width:400px;height:200px">
some content
</content>
<loading style="border:1px solid red;width:400px;height:200px">
Loading...please wait
</loading>
</oajax:CallbackPanel>
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It is very useful to load dynamic scripts, dynamic stylesheets, dynamic controls, etc.
The update of the panel is done without reloading the page.
Client-side update
ob_post.UpdatePanel("callbackPanel1");
ob_post.UpdatePanelInContainer("callbackPanel1", "container");
ob_post.UpdatePanelFromPage("callbackPanel1", "container", "callbackPanels.aspx");
ob_post.UpdateAllPanels();
Server-side update
UpdatePanel("callbackPanel1");
UpdatePanel("callbackPanel1", "container");
UpdateAllPanels();
View UpdatePanel tutorial.
View UpdatePanelInContainer tutorial.
View UpdatePanelFromPage tutorial.
View UpdateAllPanels tutorial.
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I admire it a lot." |
Shiyaz Ahammed |
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