File Share Question

**Spam Catcher** · Nov 15 '06, 08:35 AM

Re: File Share Question

"Adrian <" <not@all.access iblewrote in news:45599e79$0 $749$5fc3050
@dreader2.news. tiscali.nl:

In an application in which FileShare is set.
Is it possible to go to say a file conntrol block
to ascertain the condition of the file, ie. if
someone else is working with the file? Or is
is it necessary to do all writing (not reading)
in a loop in which the user is kept till the
file is free again?

I believe if your filestream remains open - and depending on which mode you
have the filestream set to, you'll have control over the file.

**> Adrian** · Nov 15 '06, 11:05 AM

Re: File Share Question

"Spam Catcher" <spamhoneypot@r ogers.comwrote in message
news:Xns987C276 F1A416usenethon eypotrogers@127 .0.0.1...

"Adrian <" <not@all.access iblewrote in news:45599e79$0 $749$5fc3050
@dreader2.news. tiscali.nl:
>

In an application in which FileShare is set.
Is it possible to go to say a file conntrol block
to ascertain the condition of the file, ie. if
someone else is working with the file? Or is
is it necessary to do all writing (not reading)
in a loop in which the user is kept till the
file is free again?

>
>

Hi,

If a FileShare parameter is used and a
file is opened permitting others to read only,
what happens if some one tries to modify
the file, will he be set to wait in a loop
or will he get an error message?

Adrian.

**Rad [Visual C# MVP]** · Nov 15 '06, 03:15 PM

Re: File Share Question

I believe the .NEt framework will throw an exception if you try and open a
file for writing that has been opened elswjere for read only

--

Bits. Bytes.

http://bytes.thinkersroom.com

------------------------------

Hi,
>
If a FileShare parameter is used and a
file is opened permitting others to read only,
what happens if some one tries to modify
the file, will he be set to wait in a loop
or will he get an error message?
>
Adrian.
>
>
>
>
>

**Spam Catcher** · Nov 15 '06, 09:05 PM

Re: File Share Question

"Adrian <" <not@all.access iblewrote in news:455af913$0 $750$5fc3050
@dreader2.news. tiscali.nl:

If a FileShare parameter is used and a
file is opened permitting others to read only,
what happens if some one tries to modify
the file, will he be set to wait in a loop
or will he get an error message?

..NET will throw an exception.

**> Adrian** · Nov 15 '06, 09:45 PM

Re: File Share Question

Ok, thanks.
I think I have soved the problem by adding
code like so:

While(!fs.CanRe ad){}

That will keep the user waiting just a little
while till the file is free again. At least,
that is my expectation :)

(For the non-filestream files I have written
a simple block / unblock routine.)

Thank you again

Adrian.

"Spam Catcher" <spamhoneypot@r ogers.comwrote in message
news:Xns987CA68 BE3B32usenethon eypotrogers@127 .0.0.1...

"Adrian <" <not@all.access iblewrote in news:455af913$0 $750$5fc3050
@dreader2.news. tiscali.nl:
>

If a FileShare parameter is used and a
file is opened permitting others to read only,
what happens if some one tries to modify
the file, will he be set to wait in a loop
or will he get an error message?

>
.NET will throw an exception.

**Dave Sexton** · Nov 17 '06, 12:15 PM

Re: File Share Question

Hi Adrian,

You might want to let some other threads get some processor time as well by
putting the thread to sleep:

while (!fs.CanRead)
{
System.Threadin g.Thread.Curren t.Sleep(200);
}

--
Dave Sexton

"Adrian <" <not@all.access iblewrote in message
news:455b8f84$0 $739$5fc3050@dr eader2.news.tis cali.nl...

Ok, thanks.
I think I have soved the problem by adding
code like so:
>
While(!fs.CanRe ad){}
>
That will keep the user waiting just a little
while till the file is free again. At least,
that is my expectation :)
>
(For the non-filestream files I have written
a simple block / unblock routine.)
>
Thank you again
>
Adrian.
>
>
"Spam Catcher" <spamhoneypot@r ogers.comwrote in message
news:Xns987CA68 BE3B32usenethon eypotrogers@127 .0.0.1...

>"Adrian <" <not@all.access iblewrote in news:455af913$0 $750$5fc3050
>@dreader2.news .tiscali.nl:
>>

If a FileShare parameter is used and a
file is opened permitting others to read only,
what happens if some one tries to modify
the file, will he be set to wait in a loop
or will he get an error message?

>>
>.NET will throw an exception.

>
>

**> Adrian** · Nov 17 '06, 05:25 PM

Re: File Share Question

"Dave Sexton" <dave@jwa[remove.this]online.comwrote in message
news:ep1jPRkCHH A.4832@TK2MSFTN GP06.phx.gbl...

Hi Adrian,
>
You might want to let some other threads get some processor time as well

by

putting the thread to sleep:
>
while (!fs.CanRead)
{
System.Threadin g.Thread.Curren t.Sleep(200);
}
>

*************** *************** ***
That is good advice, Thank you for it.
Adrian.

**> Adrian** · Nov 17 '06, 06:35 PM

Re: File Share Question

Your suggestion generated an error.
("... cannot be accessed as an instance reference ...")
Would System.Threadin g.Thread.Sleep( 200);
be ok as well?

Please advise.

Adrian.

"Dave Sexton" <dave@jwa[remove.this]online.comwrote in message
news:ep1jPRkCHH A.4832@TK2MSFTN GP06.phx.gbl...

Hi Adrian,
>
You might want to let some other threads get some processor time as well

by

putting the thread to sleep:
>
while (!fs.CanRead)
{
System.Threadin g.Thread.Curren t.Sleep(200);
}
>
--
Dave Sexton
>
"Adrian <" <not@all.access iblewrote in message
news:455b8f84$0 $739$5fc3050@dr eader2.news.tis cali.nl...

Ok, thanks.
I think I have soved the problem by adding
code like so:

While(!fs.CanRe ad){}

That will keep the user waiting just a little
while till the file is free again. At least,
that is my expectation :)

(For the non-filestream files I have written
a simple block / unblock routine.)

Thank you again

Adrian.

"Spam Catcher" <spamhoneypot@r ogers.comwrote in message
news:Xns987CA68 BE3B32usenethon eypotrogers@127 .0.0.1...

"Adrian <" <not@all.access iblewrote in news:455af913$0 $750$5fc3050
@dreader2.news. tiscali.nl:
>
If a FileShare parameter is used and a
file is opened permitting others to read only,
what happens if some one tries to modify
the file, will he be set to wait in a loop
or will he get an error message?
>
.NET will throw an exception.

>
>

**Dave Sexton** · Nov 17 '06, 07:55 PM

Re: File Share Question

Hi,

Yes, sorry. I wrote that off the top of my head, which apparently is the
stupid part ;)

--
Dave Sexton

"Adrian <" <not@all.access iblewrote in message
news:455e0585$0 $715$5fc3050@dr eader2.news.tis cali.nl...

Your suggestion generated an error.
("... cannot be accessed as an instance reference ...")
Would System.Threadin g.Thread.Sleep( 200);
be ok as well?
>
Please advise.
>
Adrian.
>
>
>
>
"Dave Sexton" <dave@jwa[remove.this]online.comwrote in message
news:ep1jPRkCHH A.4832@TK2MSFTN GP06.phx.gbl...

>Hi Adrian,
>>
>You might want to let some other threads get some processor time as well

by

>putting the thread to sleep:
>>
>while (!fs.CanRead)
>{
> System.Threadin g.Thread.Curren t.Sleep(200);
>}
>>
>--
>Dave Sexton
>>
>"Adrian <" <not@all.access iblewrote in message
>news:455b8f84$ 0$739$5fc3050@d reader2.news.ti scali.nl...

Ok, thanks.
I think I have soved the problem by adding
code like so:
>
While(!fs.CanRe ad){}
>
That will keep the user waiting just a little
while till the file is free again. At least,
that is my expectation :)
>
(For the non-filestream files I have written
a simple block / unblock routine.)
>
Thank you again
>
Adrian.
>
>
"Spam Catcher" <spamhoneypot@r ogers.comwrote in message
news:Xns987CA68 BE3B32usenethon eypotrogers@127 .0.0.1...
>"Adrian <" <not@all.access iblewrote in news:455af913$0 $750$5fc3050
>@dreader2.news .tiscali.nl:
>>
If a FileShare parameter is used and a
file is opened permitting others to read only,
what happens if some one tries to modify
the file, will he be set to wait in a loop
or will he get an error message?
>>
>.NET will throw an exception.
>
>

>>
>>

>
>

**> Adrian** · Nov 17 '06, 09:05 PM

Re: File Share Question

:))

Adian

"Dave Sexton" <dave@jwa[remove.this]online.comwrote in message
news:OHtRLUoCHH A.1196@TK2MSFTN GP02.phx.gbl...

Hi,
>
Yes, sorry. I wrote that off the top of my head, which apparently is the
stupid part ;)
>
--
Dave Sexton
>
"Adrian <" <not@all.access iblewrote in message
news:455e0585$0 $715$5fc3050@dr eader2.news.tis cali.nl...

Your suggestion generated an error.
("... cannot be accessed as an instance reference ...")
Would System.Threadin g.Thread.Sleep( 200);
be ok as well?

Please advise.

Adrian.

"Dave Sexton" <dave@jwa[remove.this]online.comwrote in message
news:ep1jPRkCHH A.4832@TK2MSFTN GP06.phx.gbl...

Hi Adrian,
>
You might want to let some other threads get some processor time as

well

by

putting the thread to sleep:
>
while (!fs.CanRead)
{
System.Threadin g.Thread.Curren t.Sleep(200);
}
>
--
Dave Sexton
>
"Adrian <" <not@all.access iblewrote in message
news:455b8f84$0 $739$5fc3050@dr eader2.news.tis cali.nl...
Ok, thanks.
I think I have soved the problem by adding
code like so:

While(!fs.CanRe ad){}

That will keep the user waiting just a little
while till the file is free again. At least,
that is my expectation :)

(For the non-filestream files I have written
a simple block / unblock routine.)

Thank you again

Adrian.

"Spam Catcher" <spamhoneypot@r ogers.comwrote in message
news:Xns987CA68 BE3B32usenethon eypotrogers@127 .0.0.1...
"Adrian <" <not@all.access iblewrote in

news:455af913$0 $750$5fc3050

@dreader2.news. tiscali.nl:
>
If a FileShare parameter is used and a
file is opened permitting others to read only,
what happens if some one tries to modify
the file, will he be set to wait in a loop
or will he get an error message?
>
.NET will throw an exception.

>
>

>
>

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