Databases
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    <p>I had similar issue, and found the culprit in our code.</p> <p>Technique used: 0. Make sure in Spy++ that there are only two unmanaged threads with controls on them (WinForms and GDI+):</p> <pre><code>public static class ThreadingHelper_NativeMethods { [DllImport("user32.dll")] public static extern bool IsGUIThread(bool bConvert); } </code></pre> <p>call this from UI thread upon init:</p> <pre><code>// This code forces initialization of .NET BroadcastEventWindow to the UI thread. // http://social.msdn.microsoft.com/Forums/en-US/netfxbcl/thread/fb267827-1765-4bd9-ae2f-0abbd5a2ae22 if (ThreadingHelper_NativeMethods.IsGUIThread(false)) { Microsoft.Win32.SystemEvents.InvokeOnEventsThread(new MethodInvoker(delegate() { int x = 0; })); } </code></pre> <ol> <li><p>Remember managed id of Ui Thread in a singleton class.</p></li> <li><p>Search for all UserControls defined in our code. In each control's constructor, before calling InitializeComponent(), i placed code that checks current thread id against the main thread id. If they aren't equal, Assert(false).</p></li> <li><p>Subscribe to SystemEvents.UserPreferencesChanging. Debug.Assert(false) in handler: this happens before SystemEvents.UserPreferencesChanged, so debugger will hopefully pause here.</p></li> <li><p>Inspect list of subscribers to SystemEvents in the debugger. Find a subscriber in _handles dictionary of lists. Opening up SynchronizationContext of the each callback should reveal the problem: same thread id as for the control created on non-UI thread. SystemEvents will will execute event handler on that thread, deadlocking against UI thread.</p></li> </ol>
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    1. PONeed help deciphering a C# stack trace
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    1. USGregC
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    1. COExcellent tips - thanks!
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      1. USJon Tackabury
 

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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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