Re: Async File IO is not async?

On Jan 18, 2008 10:19 AM, Ryan Heath <[email protected]> wrote:
> Hi Alex,
>
> I have altered your example into this [2]
> because the kb had this line [1] which made me wonder ;)
>
> // Ryan
>
...
>       using (FileStream file = File.Create("out.test", 0x1000,
> FileOptions.Asynchronous))
>       {
>         file.Position = 512 * 1024 * 1024 - 1;
>         file.WriteByte(0);
>       }
>
>       using (FileStream file = File.Open("out.test",FileMode.Open,
> FileAccess.Write))
>      {
...

^^^ 2nd ctor doesn't open the file in async mode. Also, I did the same
thing, opened it async, opened it with 2 different async-enabling
ctors, verified fiel.IsAsync == true and still the entire write goes
as 1 synchronous call, wtf?

Cheers

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