Re: Intermittent Incorrect Result on System.IO.Directory.Exists

On Thu, 9 Oct 2008 20:34:20 +0200, Brady Kelly <[email protected]> wrote:

>I'm getting an intermittent false negative on the call "if
>(!System.IO.Directory.Exists(folder))" in code in an ASP.NET 2 web site [1].
>The folder clearly exists, and even contains a log file that is written to
>when the CLR doesn't lie about the folder's existence.

This sounds exactly like the problem you had back in May:

> Date: Mon, 19 May 2008 19:42:33 +0200
> From: Brady Kelly <[email protected]>
> Subject: [DOTNET-CLR] Directory Ops Behaving Asynchronous
> 
> I have the following code execute:
>             if (Directory.Exists(exportFolder))
>             {
>                 Directory.Delete(exportFolder, true);
>             }
>             Directory.CreateDirectory(exportFolder);
> [...]
> Occassionally, about 1 in 20 tests I run in the IDE, PerformExport 
> fails because exportFolder does not exist. How can it not exist if 
> I create it and no exception is thrown? I can only suspect that the
> Directory code is not truly synchronous, and has not completed 
> before PerformExport executes.

How did that work out?

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