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POjQuery modal form dialog postback problems
 

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    <p>I've created a <a href="http://en.wikipedia.org/wiki/JQuery_UI" rel="nofollow noreferrer">jQuery UI</a> Modal form, and I want that form to trigger a postback, but I'm having difficulty getting it to work.</p> <p>I know there are quite a few articles based on using the SimpleModal plugin, and I have tried to adapt these and override the _doPostback function, but with no joy.</p> <p>I think the problem is within the call to my __doPostBack function and what the parameters should be. Is that the case?</p> <p>Here's my form</p> <pre><code>&lt;form id="summaryForm" runat="server"&gt; &lt;div id="dialog" title="Quick Booking"&gt; &lt;p&gt;Select user from list or enter name in box&lt;/p&gt; &lt;fieldset&gt; &lt;p&gt;&lt;label&gt;Is machine going out of the office?&lt;/label&gt;&lt;/p&gt; &lt;asp:RadioButton TextAlign="Left" GroupName="outOfOffice" Text="Yes" ID="optYes" class="radio" runat="server" /&gt; &lt;asp:RadioButton TextAlign="Left" GroupName="outOfOffice" Text="No" ID="optNo" class="radio" runat="server" Checked="true" /&gt; &lt;label for="dropLstUser"&gt;User:&lt;/label&gt; &lt;asp:DropDownList ID="dropLstUser" runat="server" /&gt; &lt;input type="text" name="txtUser" id="txtUser" value="" class="text" /&gt; &lt;label for="txtStartDate"&gt;Start Date:&lt;/label&gt; &lt;input type="text" id="txtStartDate" name="txtStartDate" class="datepicker" /&gt; &lt;asp:HiddenField ID="assetField" runat="server" /&gt; &lt;%--&lt;button onclick="performPostBack('summaryForm')"&gt;Postback&lt;/button&gt;--%&gt; &lt;/fieldset&gt; &lt;/div&gt; //-------------------------------- </code></pre> <p>Here is the JavaScript code:</p> <pre><code>&lt;script type="text/javascript"&gt; $(function() { $("#dialog").dialog({ bgiframe: true, height: 300, modal: true, buttons: { 'Close': function() { alert("closing"); $(this).dialog("close"); __doPostBack = newDoPostBack; __doPostBack("aspnetForm",null); } } }); }); function newDoPostBack(eventTarget, eventArgument) { alert("postingback"); var theForm = document.forms[0]; if (!theForm) { theForm = document.aspnetForm; } if (!theForm.onsubmit || (theForm.onsubmit() != false)) { document.getElementById("__EVENTTARGET").value = eventTarget; document.getElementById("__EVENTARGUMENT").value = eventArgument; theForm.submit(); } } &lt;/script&gt; </code></pre>
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