File access issue

8 May 2006 3:26 AM

Jason

I am writing a program that opens a file and writes to it. When I open the
file to read data from it, I have no problems but when I try and write to it
I get an error saying that the file is already in use
(System.IO.IOException: The process cannot access the file
"O:\2006-04-25\2006-04-25.mpg" because it is being used by another
process.). As you can see the file is an mpeg file which are often very
large so I would rather not make a copy of the file to avoid the problem. I
used "Process Explorer" and found that Windows Explorer is locking my mpeg
files any time they are opened and will not release them unless the process
is killed and then started again. In Process Explorer there is an option to
close the handle which fixes the problem. Can anyone tell me how to add
this into my program so that if I run into this problem, I can simply close
the handle and try again? Thanks in advance for your help. -Jason

8 May 2006 5:49 AM

Cor Ligthert [MVP]

Jason,

Have a look at this simple tip on our website

http://www.vb-tips.com/default.aspx?ID=ab51796e-f392-4c92-8759-d436c3b242c1

I hope this helps,

Cor

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"Jason" <jshic***@comcast.net> schreef in bericht
news:GpmdnczrZ5xyJ8PZnZ2dnUVZ_vSdnZ2d@comcast.com...
>I am writing a program that opens a file and writes to it. When I open the
>file to read data from it, I have no problems but when I try and write to
>it I get an error saying that the file is already in use
>(System.IO.IOException: The process cannot access the file
>"O:\2006-04-25\2006-04-25.mpg" because it is being used by another
>process.). As you can see the file is an mpeg file which are often very
>large so I would rather not make a copy of the file to avoid the problem.
>I used "Process Explorer" and found that Windows Explorer is locking my
>mpeg files any time they are opened and will not release them unless the
>process is killed and then started again. In Process Explorer there is an
>option to close the handle which fixes the problem. Can anyone tell me how
>to add this into my program so that if I run into this problem, I can
>simply close the handle and try again? Thanks in advance for your
>lp. -Jason
>

8 May 2006 7:17 AM

Jason

Thanks for the reply but I am actually needing to write to the file as I am
patching the header. I need to open it with write access.
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"Cor Ligthert [MVP]" <notmyfirstn***@planet.nl> wrote in message
news:%23QyGfLmcGHA.3364@TK2MSFTNGP05.phx.gbl...
> Jason,
>
> Have a look at this simple tip on our website
>
> http://www.vb-tips.com/default.aspx?ID=ab51796e-f392-4c92-8759-d436c3b242c1
>
> I hope this helps,
>
> Cor
>
> "Jason" <jshic***@comcast.net> schreef in bericht
> news:GpmdnczrZ5xyJ8PZnZ2dnUVZ_vSdnZ2d@comcast.com...
>>I am writing a program that opens a file and writes to it. When I open
>>the file to read data from it, I have no problems but when I try and write
>>to it I get an error saying that the file is already in use
>>(System.IO.IOException: The process cannot access the file
>>"O:\2006-04-25\2006-04-25.mpg" because it is being used by another
>>process.). As you can see the file is an mpeg file which are often very
>>large so I would rather not make a copy of the file to avoid the problem.
>>I used "Process Explorer" and found that Windows Explorer is locking my
>>mpeg files any time they are opened and will not release them unless the
>>process is killed and then started again. In Process Explorer there is an
>>option to close the handle which fixes the problem. Can anyone tell me
>>how to add this into my program so that if I run into this problem, I can
>>simply close the handle and try again? Thanks in advance for your
>>. -Jason
>>
>
>