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copied!<p>This is a curious problem.</p> <p>The code you posted <em>should</em> work. It seems there's some kind of optimization going on that decides not to call your catch handler.</p> <p>So, I wanted to detect the exception with this:</p> <pre><code>bool threadAborted = true; try { try { } finally { /* critical code */ } threadAborted = false; } finally { Console.WriteLine("Thread aborted? {0}", threadAborted); } Console.WriteLine("Done"); </code></pre> <p>(My actual code just slept in that critical code section, so I could be sure it would abort after that finally.)</p> <p>It printed:</p> <blockquote> <p>Thread aborted? False</p> </blockquote> <p>Hmmm, strange indeed!</p> <p>So I thought about doing a little bit more work there, to trick any "smart" optimizations:</p> <pre><code>bool threadAborted = true; try { try { } finally { /* critical code */ } threadAborted = AmIEvil(); } finally { Console.WriteLine("Thread aborted? {0}", threadAborted); } Console.WriteLine("Done"); </code></pre> <p>Where <code>AmIEvil</code> is just:</p> <pre><code>[MethodImpl(MethodImplOptions.NoInlining)] static bool AmIEvil() { return false; } </code></pre> <p>Finally it printed:</p> <blockquote> <p>Thread aborted? True</p> </blockquote> <p>And there you have it. Use this in your code:</p> <pre><code>try { try { } finally { /* critical code */ } NoOp(); } catch (Exception ex) { // ThreadAbortException is caught here now! } </code></pre> <p>Where <code>NoOp</code> is just:</p> <pre><code>[MethodImpl(MethodImplOptions.NoInlining)] static void NoOp() { } </code></pre>

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