Strange thing about .NET 4.0 filesystem enumeratation functionality
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Published on 2010-04-18T19:17:33Z
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2010/04/18
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I just read a page of "Whats new .NET Framework 4.0". I have trouble understanding the last paragraph:
To remove open handles on enumerated directories or files
Create a custom method (or function in Visual Basic) to contain your enumeration code.
Apply the MethodImplAttribute attribute with the NoInlining option to the new method. For example:
[MethodImplAttribute(MethodImplOptions.NoInlining)]Private void Enumerate()Include the following method calls, to run after your enumeration code:
* The GC.Collect() method (no parameters). * The GC.WaitForPendingFinalizers() method.
Why the attribute NoInlining? What harm would inlining do here?
Why call the garbage collector manually, why not making the enumerator implement IDisposable in the first place? I suspect they use FindFirstFile()/FindNextFile() API calls for the imlementation, so FindClose() has to be called in any case if the enumeration is done.
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