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    <blockquote> <p>As I understand it during Async operations the ASP.NET thread originally running the operation is returned to the thread pool and a different thread may be used to finish the request after the Async operation has completed.</p> </blockquote> <p>That is correct. But let's talk about <code>async</code> on ASP.NET for just a minute.</p> <p><code>async</code> requires .NET 4.5. Furthermore, ASP.NET 4.5 introduces a "quirks mode" on the server side, and you have to turn the <code>SynchronizationContext</code> quirk <em>off</em>. You can do this by either setting <code>httpRuntime.targetFramework</code> to <code>4.5</code> <em>or</em> using an <code>appSettings</code> with <code>aspnet:UseTaskFriendlySynchronizationContext</code> value of <code>true</code>.</p> <p>If your web.config does not have one of those entries, then the behavior of <code>async</code> is undefined. See <a href="http://blogs.msdn.com/b/webdev/archive/2012/11/19/all-about-httpruntime-targetframework.aspx" rel="noreferrer">this post</a> for more details. I recommend using the <code>targetFramework</code> setting and fixing any problems that come up.</p> <blockquote> <p>Does this affect the HttpContext.Current.Items collection? Is an item that was in the Items collection guaranteed to be there when the Request resumes?</p> </blockquote> <p>The <code>AspNetSynchronizationContext</code> preserves the current request context across <code>await</code> points. This includes <code>HttpContext.Current</code> (which includes <code>Items</code>, <code>User</code>, etc).</p> <p>Another possibility is <code>CallContext.Logical[Get|Set]Data</code>, which also flows across <code>await</code> points. This is useful if you don't want a code dependency on <code>HttpContext</code>, but has slightly more overhead.</p> <p>I gave a talk at ThatConference a couple weeks ago on <a href="http://blog.stephencleary.com/2013/08/slides-available-thatconference-2013.html" rel="noreferrer"><code>async</code> on the server side</a>; you may find the slides helpful, particularly the ones dealing with Context and Thread-Local State.</p>
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    1. USStephen Cleary
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    1. COThanks Stephen, great response.
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      1. USGavin Osborn
 

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Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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