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POASP.NET 2.0 Asynchronous User Control Not Working
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  1. POASP.NET 2.0 Asynchronous User Control Not Working
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    copied!<p>I'm trying to get a user control working asynchronously, yet no matter what I do it continues to work synchronously. I've stripped it down to its bare minimum as a test web application. This would be the user control:</p> <pre><code>&lt;%@ Control Language="C#" %&gt; &lt;script runat="server"&gt; SqlConnection m_oConnection; SqlCommand m_oCommand; void Page_Load(object sender, EventArgs e) { Trace.Warn("Page_Load"); string strDSN = ConfigurationManager.ConnectionStrings["DSN"].ConnectionString + ";async=true"; string strSQL = "waitfor delay '00:00:10'; select * from MyTable"; m_oConnection = new SqlConnection(strDSN); m_oCommand = new SqlCommand(strSQL, m_oConnection); m_oConnection.Open(); Page.RegisterAsyncTask(new PageAsyncTask(new BeginEventHandler(BeginHandler), new EndEventHandler(EndHandler), new EndEventHandler(TimeoutHandler), null, true)); Page.ExecuteRegisteredAsyncTasks(); } IAsyncResult BeginHandler(object src, EventArgs e, AsyncCallback cb, object state) { Trace.Warn("BeginHandler"); return m_oCommand.BeginExecuteReader(cb, state); } void EndHandler(IAsyncResult ar) { Trace.Warn("EndHandler"); GridView1.DataSource = m_oCommand.EndExecuteReader(ar); GridView1.DataBind(); m_oConnection.Close(); } void TimeoutHandler(IAsyncResult ar) { Trace.Warn("TimeoutHandler"); } &lt;/script&gt; &lt;asp:gridview id="GridView1" runat="server" /&gt; </code></pre> <p>And this would be the page in which I host the control three times:</p> <pre><code>&lt;%@ page language="C#" trace="true" async="true" asynctimeout="60" %&gt; &lt;%@ register tagprefix="uc" tagname="mycontrol" src="~/MyControl.ascx" %&gt; &lt;html&gt; &lt;body&gt; &lt;form id="form1" runat="server"&gt; &lt;uc:mycontrol id="MyControl1" runat="server" /&gt; &lt;uc:mycontrol id="MyControl2" runat="server" /&gt; &lt;uc:mycontrol id="MyControl3" runat="server" /&gt; &lt;/form&gt; &lt;/body&gt; &lt;/html&gt; </code></pre> <p>The page gets displayed without errors, but the trace at the bottom of the page shows each control instance is processed synchronously. What am I doing wrong? Is there a configuration setting somewhere I'm missing?</p>
 

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