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POHow to abort another thread in .NET, when said thread is executing Console.ReadLine?
 

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  1. POHow to abort another thread in .NET, when said thread is executing Console.ReadLine?
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    <p>My console app is executing a thread that is totally devoted to the user interface, it spends a lot of its time blocking on <code>Console.ReadLine()</code> (this call spends its time deep within the bowels of Windows, outside the control of the .NET framework).</p> <p>I need to abort this thread. However, the following code doesn't seem to work:</p> <pre><code>this.UserInterfaceThread.Abort(); </code></pre> <p>Any ideas? Would Thread.Interrupt() be of any use?</p> <p><strong><em>Update</em></strong></p> <p>As Hans Passant pointed out:</p> <blockquote> <p>The CLR imposes rather sane rules on the state of a thread when it aborts it. The perils of Thread.Abort() are well known, what certainly cannot ever work reliably is aborting a thread that's executing unmanaged code. Which is the case when you call Console.ReadLine(), the thread is buried deep inside Windows operating system code.</p> </blockquote> <p>The solution is to simply poke the [enter] keystroke into the currently running console app, which unblocks Console.ReadLine(), so the thread immediately aborts.</p> <p>We <em>cannot</em> use SendKeys as this is specific to windows forms, and it also requires the current window to have the focus. </p> <p>The solution is to use the library at <a href="http://inputsimulator.codeplex.com/" rel="nofollow noreferrer">inputsimulator.codeplex.com</a> which wraps the Windows SendInput() call.</p> <p>See sample code:</p> <p><a href="https://stackoverflow.com/questions/9016087/net-call-to-send-enter-keystroke-into-the-current-process-which-is-a-console">.NET call to send [enter] keystroke into the current process, which is a console app?</a></p>
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    1. COpossible duplicate of [How to add a Timeout to Console.ReadLine()?](http://stackoverflow.com/questions/57615/how-to-add-a-timeout-to-console-readline)
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    2. CO`Thread.Abort` [is evil](http://www.interact-sw.co.uk/iangblog/2004/11/12/cancellation).
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    3. CO@Darin Dimitrov: Its not a duplicate. This question deals with how to abort a thread that is running a single instance of Console.ReadLine().
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