How To Read a File that Already used by another Process

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Helloo Everbody

I am trying to build an AV for my college project and during scanning I am getting exception-Access denied,file is used by another process and hence can't scan the file.I also used Fileshare.ReadWrite but of no use.It'mostly with C: drive files.

Posted 5-Dec-11 20:55pm

RakeshRaushan121

Updated 5-Dec-11 21:11pm

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D K N T H 6-Dec-11 2:57am

what do you mean already by process? pls. clarify your question and be more specific.

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Mehdi Gholam · Answer 1 · 2011-12-05T21:02:00

Solution 1

If your file is not opened with SharedRead then you can't.

See here : File.Open Method (String, FileMode, FileAccess, FileShare)[^]

Posted 5-Dec-11 21:02pm

Mehdi Gholam

OriginalGriff · Answer 2 · 2011-12-05T21:03:00

If your file is genuinely in use by another process, and the framework is complaining about that, then there is nothing you can do: the file is locked open for exclusive access and you cannot get at it's content.

If you application has opened it, and walked away, then it complains it is in use, then try Close-ing and Dispose-ing any File related items which opened it in the first place - streams and such - if you don't then they will hold an exclusive lock until the Garbage collector disposes of them for you.