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Strange behavior using TextWriter in release version

D
I have a winforms app that I'm reading some records from a datareader and
writing them out to a file like so

SqlDataReader dataReader = sqlCommand.Exec uteReader();
TextWriter textWriter = new StreamWriter(st rFileName);
while(drReader. Read())
{
strRecord = ////// strRecord building stuff here
textWriter.Writ eLine(strRecord );
iRecordCount++;
}
textWriter.Clos e();

This code works fine in debug mode and release mode on win XP but fails
release mode on win2000. It doesn't fail as in throw any exceptions or any
errors and appears to work fine but no file is created. Everything appears
to work but I have no file.

strFileName is formed by a number of variables but ultimately looks
something like this

c:\XDataFiles\D ataFiles\2006\X Data_06_21_2006 .txt

if instead of using strFileName, I hard code it to

TextWriter textWriter = new
StreamWriter(@" c:\XDataFiles\D ataFiles\2006\X Data_06_21_2006 .txt");

it works fine then and creates a data file for me.

So I'm very confused as to why this is. I don't have the IDE installed on my
win2000 machine so I can't step into debug mode, its for release testing.
Anyone have any ideas?

Thanks
Jun 22 '06 #1
11 1837
D wrote:
I have a winforms app that I'm reading some records from a datareader and
writing them out to a file like so

SqlDataReader dataReader = sqlCommand.Exec uteReader();
TextWriter textWriter = new StreamWriter(st rFileName);
while(drReader. Read())
{
strRecord = ////// strRecord building stuff here
textWriter.Writ eLine(strRecord );
iRecordCount++;
}
textWriter.Clos e();

This code works fine in debug mode and release mode on win XP but fails
release mode on win2000. It doesn't fail as in throw any exceptions or any
errors and appears to work fine but no file is created. Everything appears
to work but I have no file.

strFileName is formed by a number of variables but ultimately looks
something like this

c:\XDataFiles\D ataFiles\2006\X Data_06_21_2006 .txt

if instead of using strFileName, I hard code it to

TextWriter textWriter = new
StreamWriter(@" c:\XDataFiles\D ataFiles\2006\X Data_06_21_2006 .txt");

it works fine then and creates a data file for me.

So I'm very confused as to why this is. I don't have the IDE installed on
my win2000 machine so I can't step into debug mode, its for release
testing.
Anyone have any ideas?

Thanks


Hi D,

What you can do, as a temporary debug is to write to a file, to the console,
or show messagebox containing the value of the string that
is 'strFileName'. It could be some sort of wierd condition back up the
line that's causing strFileName not to be formed correctly.

Also, if you're on NTFS, check your security permissions in the target
directory.

Hope this helps,
-- Tom Spink
Jun 22 '06 #2
D

"Tom Spink" <ts****@gmail.c om> wrote in message
news:u$******** ******@TK2MSFTN GP02.phx.gbl...
D wrote:
I have a winforms app that I'm reading some records from a datareader and
writing them out to a file like so

SqlDataReader dataReader = sqlCommand.Exec uteReader();
TextWriter textWriter = new StreamWriter(st rFileName);
while(drReader. Read())
{
strRecord = ////// strRecord building stuff here
textWriter.Writ eLine(strRecord );
iRecordCount++;
}
textWriter.Clos e();

This code works fine in debug mode and release mode on win XP but fails
release mode on win2000. It doesn't fail as in throw any exceptions or
any
errors and appears to work fine but no file is created. Everything
appears
to work but I have no file.

strFileName is formed by a number of variables but ultimately looks
something like this

c:\XDataFiles\D ataFiles\2006\X Data_06_21_2006 .txt

if instead of using strFileName, I hard code it to

TextWriter textWriter = new
StreamWriter(@" c:\XDataFiles\D ataFiles\2006\X Data_06_21_2006 .txt");

it works fine then and creates a data file for me.

So I'm very confused as to why this is. I don't have the IDE installed on
my win2000 machine so I can't step into debug mode, its for release
testing.
Anyone have any ideas?

Thanks


Hi D,

What you can do, as a temporary debug is to write to a file, to the
console,
or show messagebox containing the value of the string that
is 'strFileName'. It could be some sort of wierd condition back up the
line that's causing strFileName not to be formed correctly.

Also, if you're on NTFS, check your security permissions in the target
directory.

Hope this helps,
-- Tom Spink


I don't see it as a security issue because it works fine when I hard code
the name in. Plus I'm running it under administrator . I can see the
filename no problem, I 'm using log4net logger and it seems perfectly
formed.

I've got an idea to try to hard code senseless data where I am building the
strRecord (strRecord = // strRecord building stuff here' )

, I'll hard code some senseless data then close immediately to see if that
fixes it while still using the dynamically created strFileName. Maybe
something in the while loop is messing things up.

Thanks.

Jun 22 '06 #3
D

"D" <Da**@nothing.n et> wrote in message
news:OL******** ********@TK2MSF TNGP02.phx.gbl. ..

"Tom Spink" <ts****@gmail.c om> wrote in message
news:u$******** ******@TK2MSFTN GP02.phx.gbl...
D wrote:
I have a winforms app that I'm reading some records from a datareader
and
writing them out to a file like so

SqlDataReader dataReader = sqlCommand.Exec uteReader();
TextWriter textWriter = new StreamWriter(st rFileName);
while(drReader. Read())
{
strRecord = ////// strRecord building stuff here
textWriter.Writ eLine(strRecord );
iRecordCount++;
}
textWriter.Clos e();

This code works fine in debug mode and release mode on win XP but fails
release mode on win2000. It doesn't fail as in throw any exceptions or
any
errors and appears to work fine but no file is created. Everything
appears
to work but I have no file.

strFileName is formed by a number of variables but ultimately looks
something like this

c:\XDataFiles\D ataFiles\2006\X Data_06_21_2006 .txt

if instead of using strFileName, I hard code it to

TextWriter textWriter = new
StreamWriter(@" c:\XDataFiles\D ataFiles\2006\X Data_06_21_2006 .txt");

it works fine then and creates a data file for me.

So I'm very confused as to why this is. I don't have the IDE installed
on
my win2000 machine so I can't step into debug mode, its for release
testing.
Anyone have any ideas?

Thanks
Hi D,

What you can do, as a temporary debug is to write to a file, to the
console,
or show messagebox containing the value of the string that
is 'strFileName'. It could be some sort of wierd condition back up the
line that's causing strFileName not to be formed correctly.

Also, if you're on NTFS, check your security permissions in the target
directory.

Hope this helps,
-- Tom Spink


I don't see it as a security issue because it works fine when I hard code
the name in. Plus I'm running it under administrator . I can see the
filename no problem, I 'm using log4net logger and it seems perfectly
formed.

I've got an idea to try to hard code senseless data where I am building
the strRecord (strRecord = // strRecord building stuff here' )

, I'll hard code some senseless data then close immediately to see if that
fixes it while still using the dynamically created strFileName. Maybe
something in the while loop is messing things up.

Thanks.


Actually no that wouldn't make a difference either because when I hard coded
the file name the file was created perfectly. So its definately in the file
name itself, maybe I'll play around with an array of chars instead of the
string class.

Jun 22 '06 #4
D wrote:

"D" <Da**@nothing.n et> wrote in message
news:OL******** ********@TK2MSF TNGP02.phx.gbl. ..

"Tom Spink" <ts****@gmail.c om> wrote in message
news:u$******** ******@TK2MSFTN GP02.phx.gbl...
D wrote:

I have a winforms app that I'm reading some records from a datareader
and
writing them out to a file like so

SqlDataReader dataReader = sqlCommand.Exec uteReader();
TextWriter textWriter = new StreamWriter(st rFileName);
while(drReader. Read())
{
strRecord = ////// strRecord building stuff here
textWriter.Writ eLine(strRecord );
iRecordCount++;
}
textWriter.Clos e();

This code works fine in debug mode and release mode on win XP but fails
release mode on win2000. It doesn't fail as in throw any exceptions or
any
errors and appears to work fine but no file is created. Everything
appears
to work but I have no file.

strFileName is formed by a number of variables but ultimately looks
something like this

c:\XDataFiles\D ataFiles\2006\X Data_06_21_2006 .txt

if instead of using strFileName, I hard code it to

TextWriter textWriter = new
StreamWriter(@" c:\XDataFiles\D ataFiles\2006\X Data_06_21_2006 .txt");

it works fine then and creates a data file for me.

So I'm very confused as to why this is. I don't have the IDE installed
on
my win2000 machine so I can't step into debug mode, its for release
testing.
Anyone have any ideas?

Thanks

Hi D,

What you can do, as a temporary debug is to write to a file, to the
console,
or show messagebox containing the value of the string that
is 'strFileName'. It could be some sort of wierd condition back up the
line that's causing strFileName not to be formed correctly.

Also, if you're on NTFS, check your security permissions in the target
directory.

Hope this helps,
-- Tom Spink
I don't see it as a security issue because it works fine when I hard code
the name in. Plus I'm running it under administrator . I can see the
filename no problem, I 'm using log4net logger and it seems perfectly
formed.

I've got an idea to try to hard code senseless data where I am building
the strRecord (strRecord = // strRecord building stuff here' )

, I'll hard code some senseless data then close immediately to see if
that fixes it while still using the dynamically created strFileName.
Maybe something in the while loop is messing things up.

Thanks.


Actually no that wouldn't make a difference either because when I hard
coded the file name the file was created perfectly. So its definately in
the file name itself, maybe I'll play around with an array of chars
instead of the string class.


Hi D,

I don't see it as a security issue because it works fine when I hard code
the name in. Plus I'm running it under administrator . I can see the
filename no problem, I 'm using log4net logger and it seems perfectly
formed.


I thought about this, but it's better to be safe than sorry!
Actually no that wouldn't make a difference either because when I hard
coded the file name the file was created perfectly. So its definately in
the file name itself, maybe I'll play around with an array of chars
instead of the string class.


You said it's a winforms app.. just put MessageBox.Show ( strFileName ) right
before where you make the call, so you can see what's getting passed in.

Do you have any global exception handlers that may be eating up the
exception further up the call stack? Are you running the application from
a network drive? Local .NET security policies may be interfering, if you
are.

Hope this helps,
-- Tom Spink
Jun 22 '06 #5
D

"Tom Spink" <ts****@gmail.c om> wrote in message
news:eN******** ******@TK2MSFTN GP04.phx.gbl...
D wrote:

"D" <Da**@nothing.n et> wrote in message
news:OL******** ********@TK2MSF TNGP02.phx.gbl. ..

"Tom Spink" <ts****@gmail.c om> wrote in message
news:u$******** ******@TK2MSFTN GP02.phx.gbl...
D wrote:

> I have a winforms app that I'm reading some records from a datareader
> and
> writing them out to a file like so
>
> SqlDataReader dataReader = sqlCommand.Exec uteReader();
> TextWriter textWriter = new StreamWriter(st rFileName);
> while(drReader. Read())
> {
> strRecord = ////// strRecord building stuff here
> textWriter.Writ eLine(strRecord );
> iRecordCount++;
> }
> textWriter.Clos e();
>
> This code works fine in debug mode and release mode on win XP but
> fails
> release mode on win2000. It doesn't fail as in throw any exceptions or
> any
> errors and appears to work fine but no file is created. Everything
> appears
> to work but I have no file.
>
> strFileName is formed by a number of variables but ultimately looks
> something like this
>
> c:\XDataFiles\D ataFiles\2006\X Data_06_21_2006 .txt
>
> if instead of using strFileName, I hard code it to
>
> TextWriter textWriter = new
> StreamWriter(@" c:\XDataFiles\D ataFiles\2006\X Data_06_21_2006 .txt");
>
> it works fine then and creates a data file for me.
>
> So I'm very confused as to why this is. I don't have the IDE installed
> on
> my win2000 machine so I can't step into debug mode, its for release
> testing.
>
>
> Anyone have any ideas?
>
> Thanks

Hi D,

What you can do, as a temporary debug is to write to a file, to the
console,
or show messagebox containing the value of the string that
is 'strFileName'. It could be some sort of wierd condition back up the
line that's causing strFileName not to be formed correctly.

Also, if you're on NTFS, check your security permissions in the target
directory.

Hope this helps,
-- Tom Spink

I don't see it as a security issue because it works fine when I hard
code
the name in. Plus I'm running it under administrator . I can see the
filename no problem, I 'm using log4net logger and it seems perfectly
formed.

I've got an idea to try to hard code senseless data where I am building
the strRecord (strRecord = // strRecord building stuff here' )

, I'll hard code some senseless data then close immediately to see if
that fixes it while still using the dynamically created strFileName.
Maybe something in the while loop is messing things up.

Thanks.
Actually no that wouldn't make a difference either because when I hard
coded the file name the file was created perfectly. So its definately in
the file name itself, maybe I'll play around with an array of chars
instead of the string class.


Hi D,

I don't see it as a security issue because it works fine when I hard
code
the name in. Plus I'm running it under administrator . I can see the
filename no problem, I 'm using log4net logger and it seems perfectly
formed.


I thought about this, but it's better to be safe than sorry!
Actually no that wouldn't make a difference either because when I hard
coded the file name the file was created perfectly. So its definately in
the file name itself, maybe I'll play around with an array of chars
instead of the string class.


You said it's a winforms app.. just put MessageBox.Show ( strFileName )
right
before where you make the call, so you can see what's getting passed in.

I'll give that a try but as I said its also being written out to a log file
via log4net.
Do you have any global exception handlers that may be eating up the
exception further up the call stack? Are you running the application from
a network drive? Local .NET security policies may be interfering, if you
are.
all of the code is wrapped in an exception handler and its not throwing
anything, the function works fine and returns fine and appears normal all
except for the file not being created. Its on a local c: drive.


Hope this helps,
-- Tom Spink

Jun 22 '06 #6
D

"D" <Da**@nothing.n et> wrote in message
news:ON******** ******@TK2MSFTN GP05.phx.gbl...

"Tom Spink" <ts****@gmail.c om> wrote in message
news:eN******** ******@TK2MSFTN GP04.phx.gbl...
D wrote:

"D" <Da**@nothing.n et> wrote in message
news:OL******** ********@TK2MSF TNGP02.phx.gbl. ..

"Tom Spink" <ts****@gmail.c om> wrote in message
news:u$******** ******@TK2MSFTN GP02.phx.gbl...
>D wrote:
>
>> I have a winforms app that I'm reading some records from a datareader
>> and
>> writing them out to a file like so
>>
>> SqlDataReader dataReader = sqlCommand.Exec uteReader();
>> TextWriter textWriter = new StreamWriter(st rFileName);
>> while(drReader. Read())
>> {
>> strRecord = ////// strRecord building stuff here
>> textWriter.Writ eLine(strRecord );
>> iRecordCount++;
>> }
>> textWriter.Clos e();
>>
>> This code works fine in debug mode and release mode on win XP but
>> fails
>> release mode on win2000. It doesn't fail as in throw any exceptions
>> or
>> any
>> errors and appears to work fine but no file is created. Everything
>> appears
>> to work but I have no file.
>>
>> strFileName is formed by a number of variables but ultimately looks
>> something like this
>>
>> c:\XDataFiles\D ataFiles\2006\X Data_06_21_2006 .txt
>>
>> if instead of using strFileName, I hard code it to
>>
>> TextWriter textWriter = new
>> StreamWriter(@" c:\XDataFiles\D ataFiles\2006\X Data_06_21_2006 .txt");
>>
>> it works fine then and creates a data file for me.
>>
>> So I'm very confused as to why this is. I don't have the IDE
>> installed
>> on
>> my win2000 machine so I can't step into debug mode, its for release
>> testing.
>>
>>
>> Anyone have any ideas?
>>
>> Thanks
>
> Hi D,
>
> What you can do, as a temporary debug is to write to a file, to the
> console,
> or show messagebox containing the value of the string that
> is 'strFileName'. It could be some sort of wierd condition back up
> the
> line that's causing strFileName not to be formed correctly.
>
> Also, if you're on NTFS, check your security permissions in the target
> directory.
>
> Hope this helps,
> -- Tom Spink

I don't see it as a security issue because it works fine when I hard
code
the name in. Plus I'm running it under administrator . I can see the
filename no problem, I 'm using log4net logger and it seems perfectly
formed.

I've got an idea to try to hard code senseless data where I am building
the strRecord (strRecord = // strRecord building stuff here' )

, I'll hard code some senseless data then close immediately to see if
that fixes it while still using the dynamically created strFileName.
Maybe something in the while loop is messing things up.

Thanks.

Actually no that wouldn't make a difference either because when I hard
coded the file name the file was created perfectly. So its definately in
the file name itself, maybe I'll play around with an array of chars
instead of the string class.

Hi D,

I don't see it as a security issue because it works fine when I hard
code
the name in. Plus I'm running it under administrator . I can see the
filename no problem, I 'm using log4net logger and it seems perfectly
formed.


I thought about this, but it's better to be safe than sorry!
Actually no that wouldn't make a difference either because when I hard
coded the file name the file was created perfectly. So its definately in
the file name itself, maybe I'll play around with an array of chars
instead of the string class.


You said it's a winforms app.. just put MessageBox.Show ( strFileName )
right
before where you make the call, so you can see what's getting passed in.

I'll give that a try but as I said its also being written out to a log
file via log4net.


nothing special came out of that, looks fine but still doesn't write the
textfile. I created a test console project to emulate dynamically creating
the file name based up on the date and ran that on win2000 but it worked
perfectly.

This one really has me stumped. I wonder if I should contact microsoft, I
don't have any free minutes with them so I'm not sure how far I'd get.
Do you have any global exception handlers that may be eating up the
exception further up the call stack? Are you running the application
from
a network drive? Local .NET security policies may be interfering, if you
are.


all of the code is wrapped in an exception handler and its not throwing
anything, the function works fine and returns fine and appears normal all
except for the file not being created. Its on a local c: drive.


Hope this helps,
-- Tom Spink


Jun 22 '06 #7
D <Da**@nothing.n et> wrote:

<snip>
This one really has me stumped. I wonder if I should contact microsoft, I
don't have any free minutes with them so I'm not sure how far I'd get.


Could you post a short but complete program which demonstrates the
problem?

See http://www.pobox.com/~skeet/csharp/complete.html for details of
what I mean by that.

It seems unlikely that you're actually seeing what you think you're
seeing.

--
Jon Skeet - <sk***@pobox.co m>
http://www.pobox.com/~skeet Blog: http://www.msmvps.com/jon.skeet
If replying to the group, please do not mail me too
Jun 22 '06 #8
Could it be anything to do with unicode ? (just a guess)

D wrote:
I have a winforms app that I'm reading some records from a datareader and
writing them out to a file like so

SqlDataReader dataReader = sqlCommand.Exec uteReader();
TextWriter textWriter = new StreamWriter(st rFileName);
while(drReader. Read())
{
strRecord = ////// strRecord building stuff here
textWriter.Writ eLine(strRecord );
iRecordCount++;
}
textWriter.Clos e();

This code works fine in debug mode and release mode on win XP but fails
release mode on win2000. It doesn't fail as in throw any exceptions or any
errors and appears to work fine but no file is created. Everything appears
to work but I have no file.

strFileName is formed by a number of variables but ultimately looks
something like this

c:\XDataFiles\D ataFiles\2006\X Data_06_21_2006 .txt

if instead of using strFileName, I hard code it to

TextWriter textWriter = new
StreamWriter(@" c:\XDataFiles\D ataFiles\2006\X Data_06_21_2006 .txt");

it works fine then and creates a data file for me.

So I'm very confused as to why this is. I don't have the IDE installed on my
win2000 machine so I can't step into debug mode, its for release testing.
Anyone have any ideas?

Thanks

Jun 23 '06 #9
D
Im not doing anything specific with unicode but perhaps its some default
setting that is different on both macines. What would I look at to check
unicode settings? or is it something I would have to had specificaly coded ?

thanks
"Ian Semmel" <is***********@ NOKUNKrocketcom p.com.au> wrote in message
news:u8******** ******@TK2MSFTN GP03.phx.gbl...
Could it be anything to do with unicode ? (just a guess)

D wrote:
I have a winforms app that I'm reading some records from a datareader and
writing them out to a file like so

SqlDataReader dataReader = sqlCommand.Exec uteReader();
TextWriter textWriter = new StreamWriter(st rFileName);
while(drReader. Read())
{
strRecord = ////// strRecord building stuff here
textWriter.Writ eLine(strRecord );
iRecordCount++;
}
textWriter.Clos e();

This code works fine in debug mode and release mode on win XP but fails
release mode on win2000. It doesn't fail as in throw any exceptions or
any errors and appears to work fine but no file is created. Everything
appears to work but I have no file.

strFileName is formed by a number of variables but ultimately looks
something like this

c:\XDataFiles\D ataFiles\2006\X Data_06_21_2006 .txt

if instead of using strFileName, I hard code it to

TextWriter textWriter = new
StreamWriter(@" c:\XDataFiles\D ataFiles\2006\X Data_06_21_2006 .txt");

it works fine then and creates a data file for me.

So I'm very confused as to why this is. I don't have the IDE installed on
my win2000 machine so I can't step into debug mode, its for release
testing.
Anyone have any ideas?

Thanks

Jun 24 '06 #10

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Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can effortlessly switch the default language on Windows 10 without reinstalling. I'll walk you through it. First, let's disable language synchronization. With a Microsoft account, language settings sync across devices. To prevent any complications,...
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11024
Oralloy
by: Oralloy | last post by:
Hello folks, I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>". The problem is that using the GNU compilers, it seems that the internal comparison operator "<=>" tries to promote arguments from unsigned to signed. This is as boiled down as I can make it. Here is my compilation command: g++-12 -std=c++20 -Wnarrowing bit_field.cpp Here is the code in...
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10679
jinu1996
by: jinu1996 | last post by:
In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven tapestry of website design and digital marketing. It's not merely about having a website; it's about crafting an immersive digital experience that captivates audiences and drives business growth. The Art of Business Website Design Your website is...
1
10756
by: Hystou | last post by:
Overview: Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows Update option using the Control Panel or Settings app; it automatically checks for updates and installs any it finds, whether you like it or not. For most users, this new feature is actually very convenient. If you want to control the update process,...
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9513
agi2029
by: agi2029 | last post by:
Let's talk about the concept of autonomous AI software engineers and no-code agents. These AIs are designed to manage the entire lifecycle of a software development project—planning, coding, testing, and deployment—without human intervention. Imagine an AI that can take a project description, break it down, write the code, debug it, and then launch it, all on its own.... Now, this would greatly impact the work of software developers. The idea...
1
7914
isladogs
by: isladogs | last post by:
The next Access Europe User Group meeting will be on Wednesday 1 May 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM). In this session, we are pleased to welcome a new presenter, Adolph Dupré who will be discussing some powerful techniques for using class modules. He will explain when you may want to use classes instead of User Defined Types (UDT). For example, to manage the data in unbound forms. Adolph will...
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4159
muto222
by: muto222 | last post by:
How can i add a mobile payment intergratation into php mysql website.
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3186
bsmnconsultancy
by: bsmnconsultancy | last post by:
In today's digital era, a well-designed website is crucial for businesses looking to succeed. Whether you're a small business owner or a large corporation in Toronto, having a strong online presence can significantly impact your brand's success. BSMN Consultancy, a leader in Website Development in Toronto offers valuable insights into creating effective websites that not only look great but also perform exceptionally well. In this comprehensive...

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