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    <p>That IS what the dispatcher is doing, operating on the main thread. You told the main thread to set focus because the object is on the main thread. </p> <p><strong>The problem:</strong></p> <p>The answer lies in why you must do this. <strong>You cannot operate on a windows control in any other thread than the thread it was created on.</strong> You also can't create a control in one thread, and set it as a child of a control in another thread.</p> <p>What this means to you... is that what your boss asked you to do can't be done. The only thing you can do in the background is calculate algorithms. At best, you'll be able to load <em>data</em>, and operate on <em>data</em>, and interpret <em>data</em>, but if you want to have that data be displayed in, or converted into, windows controls, you must do that on the main thread.</p> <p><strong>The only solution:</strong></p> <p>However, you can have multiple UIThreads. Which means you can create multiple <code>Window</code>s. So, the must-do alternative is to create windows on separate threads for each tab content, then host the thread-windows on each tab.</p> <p><a href="http://msdn.microsoft.com/en-us/library/ms741870.aspx" rel="nofollow">Threading windows</a></p> <p><a href="http://www.equals-forty-two.com/2010/11/19/host-a-process-window-in-wpf/" rel="nofollow">Host process window</a></p> <p><a href="http://blogs.msdn.com/b/changov/archive/2009/10/26/hosting-wpf-ui-cross-thread-and-cross-process.aspx" rel="nofollow">Cross thread hosting</a></p>
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    1. POHow to load all tabs in the background
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    1. COThanks for the quick response. So I'm guessing I will have 5 different xaml files for each tab?
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    2. CO@J-Y Not just 5 different xaml files, 5 different windows. But they can be defined in xaml (you could use the same xaml for each window but give it a different target website). The key point is to create the window in a separate thread, get it's handle, then create a window host in each tab on the main thread. Then host the threaded window in the window host. You should set the window to borderless, because a hosted window's border shows up.
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Guidance
A row detail

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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If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

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