documentation updates: TCallback, TEventTriggeredCallback, TValueTriggeredCallback, TTimeTriggeredCallback

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+<com:TContent ID="body" >

+

+<h1>TCallback</h1>

+<com:DocLink ClassPath="System.Web.UI.ActiveControls.TCallback" />

+

+<p class="block-content">

+<tt>TCallback</tt> provides a basic callback handler that can be invoked from the

+client side by using the javascript ojbect obtained from the

+<tt>ActiveControl.Javascript</tt> property.

+You can set the <tt>CallbackParameter</tt> property from javascript directly on

+the object returned by <tt>ActiveControl.Javascript</tt>.

+Once you are ready, you can call the <tt>dispatch()<tt> method on the object to

+execute the callback.

+The server-side event <tt>OnCallback</tt> is raised when a callback is requested made.

+</p>

+

+<p class="block-content">

+Example usage:

+</p>

+<com:TTextHighlighter Language="text" CssClass="source block-content" >

+&lt;com:TCallback ID="callback1" OnCallback="callback1_Requested" /&gt;

+&lt;script type="text/javascript"&gt;

+  function do_callback1()

+  {

+    var request = &lt;%= $this->callback1->ActiveControl->Javascript %&gt;;

+    request.dispatch();

+  }

+&lt;/script&gt;

+&lt;div onclick="do_callback1()">Click Me!&lt;/div&gt;

+</com:TTextHighlighter>

+

+<com:RunBar PagePath="ActiveControls.Samples.TCallback.Home" />

+

+<div class="last-modified">$Id$</div></com:TContent>
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