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2009-07-07T00:54:07.377
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2013-07-12T09:50:07.883
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2013-07-12T09:50:07.883
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I have a partly working solution now. I followed Ian's suggestion and looked through the toolkit source. In <code>CollapsiblePanelBehavior.debug.js</code>, you can that <code>expandPanel()</code> is apparently intended as part of the public interface for the behavior. There's also a <code>get_Collapsed()</code>. The key to accessing these behaviors in javascript seems to be setting the <code>BehaviorID</code> property on your <code>CollapsiblePanelExtender</code> tags in ASP.NET. I modified the repeater on my page so that the <code>BehaviorID</code>s are predictible, along these lines: <pre class="lang-html prettyprint-override"><code><ajaxToolkit:CollapsiblePanelExtender BehaviorID="<%#'collapsebehavior'+DataBinder.Eval(Container.DataItem,'id')%>" ID="CollapsiblePanelExtender" runat="server" /> </code></pre> This results with behaviors named <code>collapsebehavior1</code>, <code>collapsebehavior2</code>, <code>collapsebehavior3</code>, etc.. With this done, I'm able to expand all the collapsible panels on the client as follows: <pre class="lang-javascript prettyprint-override"><code>function expandAll() { var i = 0; while (true) { i++; var name = 'collapsebehavior' + i; var theBehavior = $find(name); if (theBehavior) { var isCollapsed = theBehavior.get_Collapsed(); if (isCollapsed) { theBehavior.expandPanel(); } } else { // No more more panels to examine break; } } } </code></pre> I'm sure using <code>$find</code> in a loop like that is really inefficient, but that's what I have so far. Also, it doesn't work on Firefox for some reason. (On FF only the first element expands, and then there's a Javascript error inside the Control Toolkit code.) This will all seem extremely ugly to all you javascript pros. Maybe I'll clean things up later, or you can help me out.
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1. POCollapsiblePanelExtender: Can I initiate collapse/expand from client-side javascript? (AJAX Control Toolkit)
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