CODEWITHSUNDEEP
c#.netfile-iofilestream
Tar
Tar

Reputation: 9015

Why FileStream.Close() hangs for a long time?

I'm creating a very big file using a FileStream (0.1 - 100 GBytes):

using (var strm = File.OpenWrite(Destination)) {
    while(someCondition) {
        bfr = GetBuffer();

        strm.Write(bfr.Data, 0, ChunkSizeInBytes);
        strm.Flush();

        ShowProgress();
    }
}

When I get to the end of the using statement, the thread hangs for a long time. I put a strm.Close() after the loop, and it seems that this is the jamming point (the file closure).

(please note that I Flush() after each Write())

Why is it and how to overcome it ?

Upvotes: 4

Views: 1540

Answers (1)

Simon Whitehead
Simon Whitehead

Reputation: 65059

My comment was correct.

See Hans Passant's answer here: https://stackoverflow.com/a/4921728/1517578

Flush(true) will flush out to disk immediately. Flush() will not.

Upvotes: 4

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