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Home/ Questions/Q 62393
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Asked: May 10, 20262026-05-10T18:28:08+00:00 2026-05-10T18:28:08+00:00

How do I get the list of open file handles by process id in

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How do I get the list of open file handles by process id in C#?

I’m interested in digging down and getting the file names as well.

Looking for the programmatic equivalent of what process explorer does.

Most likely this will require interop.

Considering adding a bounty on this, the implementation is nasty complicated.

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  1. 2026-05-10T18:28:08+00:00Added an answer on May 10, 2026 at 6:28 pm

    Ouch this is going to be hard to do from managed code.

    There is a sample on codeproject

    Most of the stuff can be done in interop, but you need a driver to get the filename cause it lives in the kernel’s address space. Process Explorer embeds the driver in its resources. Getting this all hooked up from C# and supporting 64bit as well as 32, is going to be a major headache.

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