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POASP.NET UserControl Does Not Initialize Child Controls
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  1. POASP.NET UserControl Does Not Initialize Child Controls
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    copied!<p>Inside my page, I have the following:</p> <pre><code>&lt;aspe:UpdatePanel runat="server" ID="updatePanel"&gt; &lt;ContentTemplate&gt; &lt;local:KeywordSelector runat="server" ID="ksKeywords" /&gt; &lt;/ContentTemplate&gt; &lt;/aspe:UpdatePanel&gt; </code></pre> <p>The <code>KeywordSelector</code> control is a control I define in the same assembly and <code>local</code> is mapped to its namespace.</p> <p>The control is made up of several other controls and is defined as such:</p> <pre><code>&lt;%@ Control Language="C#" AutoEventWireup="true" CodeBehind="KeywordSelector.ascx.cs" Inherits="Keywords.KeywordSelector" %&gt; </code></pre> <p>and has quite a few server controls of its own, all defined as members in the <code>.designer.cs</code> file.</p> <p>However, <strong>during no part of the control's lifecycle does it have any child control objects nor does it produce HTML</strong>:</p> <ol> <li>All of the members defined in the <code>.designer.cs</code> file are <code>null</code>.</li> <li>Calls to <code>HasControls</code> return <code>false</code>.</li> <li>Calls to <code>EnsureChildControls</code> do nothing.</li> <li>The <code>Controls</code> collection is empty.</li> </ol> <p>Removing the <code>UpdatePanel</code> did no good. I tried to reproduce it in a clean page with a new <code>UserControl</code> and the same thing happens.</p> <p>I am using ASP.NET over .NET Framework 3.5 SP1 with the integrated web server.</p> <p>What am I missing here?</p> <p><strong>Update #1:</strong> Following Rob's comment, I looked into <code>OnInit</code> and found that the <code>UserControl</code> does not detect that it has any child controls. Moreover, <code>CreateControlCollection</code> is never called!</p>
 

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