FileSystemWatcher

[jlea]

I'm trying to watch a file from my XP-Pro workstation to either a Win2000 or
a NT4 machine and everytime I try to set the path property to something such
as \\PDC1\cdrive\ I get a system.nullException error.

Anyone have any ideas? Does this work? It works just fine on my local
machine: "c:\abc\def\"

Thanks. Jon Lea

[Michael Giagnocavo [MVP]]

First question: Do you have permissions to that share?

Second: please post the full exception and stack trace along with a small
bit of code.

Thanks,
-mike
MVP

"jlea" <jo*@leapsoft.com> wrote in message
news:Op**************@TK2MSFTNGP11.phx.gbl...

I'm trying to watch a file from my XP-Pro workstation to either a Win2000 or a NT4 machine and everytime I try to set the path property to something such as \\PDC1\cdrive\ I get a system.nullException error.

Anyone have any ideas? Does this work? It works just fine on my local
machine: "c:\abc\def\"

Thanks. Jon Lea

[jlea]

Thanks for the reply. I have permission to the share: I'm able to save a
file to that share from within Word. I'm using the following code:

void FileWatcher::SetFile(String* fullPathName)

{

FileInfo* fi = new FileInfo(fullPathName);

m_watcher->Path = fi->DirectoryName;

m_watcher->EnableRaisingEvents = true;

m_watcher->Filter = fi->Name;

}
and the exact exception is:

A "System.NullReferenceException" occured.
Object reference not set to an instance of an object.

and it occurs on this line:

m_watcher->Path = fi->DirectoryName;

and fi->DirectoryName returns \\Pdc1\cdrive\.

I was doing some searching on the net about the FileSystemWatcher and found
this link:

http://msdn.microsoft.com/library/de...t4machines.asp

It sounds like FileSystemWatcher has a few problems with network file
watching.

Thanks again and let me know what you think. Jon.
"Michael Giagnocavo [MVP]" <mg*******@Atrevido.net> wrote in message
news:%2****************@TK2MSFTNGP12.phx.gbl...

First question: Do you have permissions to that share?

Second: please post the full exception and stack trace along with a small
bit of code.

Thanks,
-mike
MVP

"jlea" <jo*@leapsoft.com> wrote in message
news:Op**************@TK2MSFTNGP11.phx.gbl...

I'm trying to watch a file from my XP-Pro workstation to either a

Win2000 or

a NT4 machine and everytime I try to set the path property to something

such

as \\PDC1\cdrive\ I get a system.nullException error.

Anyone have any ideas? Does this work? It works just fine on my local
machine: "c:\abc\def\"

Thanks. Jon Lea

[Michael Giagnocavo [MVP]]

What's the full stack trace? And to test, don't use NT4.
-mike
MVP

"jlea" <jo*@leapsoft.com> wrote in message
news:%2****************@TK2MSFTNGP10.phx.gbl...

Thanks for the reply. I have permission to the share: I'm able to save a
file to that share from within Word. I'm using the following code:

void FileWatcher::SetFile(String* fullPathName)

{

FileInfo* fi = new FileInfo(fullPathName);

m_watcher->Path = fi->DirectoryName;

m_watcher->EnableRaisingEvents = true;

m_watcher->Filter = fi->Name;

}
and the exact exception is:

A "System.NullReferenceException" occured.
Object reference not set to an instance of an object.

and it occurs on this line:

m_watcher->Path = fi->DirectoryName;

and fi->DirectoryName returns \\Pdc1\cdrive\.

I was doing some searching on the net about the FileSystemWatcher and found this link:

http://msdn.microsoft.com/library/de...t4machines.asp
It sounds like FileSystemWatcher has a few problems with network file
watching.

Thanks again and let me know what you think. Jon.
"Michael Giagnocavo [MVP]" <mg*******@Atrevido.net> wrote in message
news:%2****************@TK2MSFTNGP12.phx.gbl...

First question: Do you have permissions to that share?

Second: please post the full exception and stack trace along with a small bit of code.

Thanks,
-mike
MVP

"jlea" <jo*@leapsoft.com> wrote in message
news:Op**************@TK2MSFTNGP11.phx.gbl...

I'm trying to watch a file from my XP-Pro workstation to either a Win2000

or

a NT4 machine and everytime I try to set the path property to

something such

as \\PDC1\cdrive\ I get a system.nullException error.

Anyone have any ideas? Does this work? It works just fine on my local
machine: "c:\abc\def\"

Thanks. Jon Lea

[jlea]

Michael - I think I've solved my problem - its amazing what a day makes.
Apparently the FileInfo class drops the last "\" on network files and has it
for local drives. I added some code to make sure the last "\" is on the
directory name before asssigning it to the path property and things seem to
work now. So I can use my XP-Pro workstation to watch files on the NT4
server and also on another Win2000 workstation. I'm in the process of
testing it with a Win2000 workstation going to the NT4 server.

Thanks for the help. Jon.
"Michael Giagnocavo [MVP]" <mg*******@Atrevido.net> wrote in message
news:Oy****************@TK2MSFTNGP09.phx.gbl...

What's the full stack trace? And to test, don't use NT4.
-mike
MVP

"jlea" <jo*@leapsoft.com> wrote in message
news:%2****************@TK2MSFTNGP10.phx.gbl...

Thanks for the reply. I have permission to the share: I'm able to save a

file to that share from within Word. I'm using the following code:

void FileWatcher::SetFile(String* fullPathName)

{

FileInfo* fi = new FileInfo(fullPathName);

m_watcher->Path = fi->DirectoryName;

m_watcher->EnableRaisingEvents = true;

m_watcher->Filter = fi->Name;

}
and the exact exception is:

A "System.NullReferenceException" occured.
Object reference not set to an instance of an object.

and it occurs on this line:

m_watcher->Path = fi->DirectoryName;

and fi->DirectoryName returns \\Pdc1\cdrive\.

I was doing some searching on the net about the FileSystemWatcher and

found

this link:

http://msdn.microsoft.com/library/de...t4machines.asp

It sounds like FileSystemWatcher has a few problems with network file
watching.

Thanks again and let me know what you think. Jon.
"Michael Giagnocavo [MVP]" <mg*******@Atrevido.net> wrote in message
news:%2****************@TK2MSFTNGP12.phx.gbl...

First question: Do you have permissions to that share?

Second: please post the full exception and stack trace along with a

small bit of code.

Thanks,
-mike
MVP

"jlea" <jo*@leapsoft.com> wrote in message
news:Op**************@TK2MSFTNGP11.phx.gbl...
> I'm trying to watch a file from my XP-Pro workstation to either a

Win2000

or
> a NT4 machine and everytime I try to set the path property to something such
> as \\PDC1\cdrive\ I get a system.nullException error.
>
> Anyone have any ideas? Does this work? It works just fine on my local > machine: "c:\abc\def\"
>
> Thanks. Jon Lea
>
>

[Michael Giagnocavo [MVP]]

Great find, let me check into this.

Thanks,
-mike
MVP
"jlea" <jo*@leapsoft.com> wrote in message
news:%2****************@tk2msftngp13.phx.gbl...

Michael - I think I've solved my problem - its amazing what a day makes.
Apparently the FileInfo class drops the last "\" on network files and has it for local drives. I added some code to make sure the last "\" is on the
directory name before asssigning it to the path property and things seem to work now. So I can use my XP-Pro workstation to watch files on the NT4
server and also on another Win2000 workstation. I'm in the process of
testing it with a Win2000 workstation going to the NT4 server.

Thanks for the help. Jon.
"Michael Giagnocavo [MVP]" <mg*******@Atrevido.net> wrote in message
news:Oy****************@TK2MSFTNGP09.phx.gbl...

What's the full stack trace? And to test, don't use NT4.
-mike
MVP

"jlea" <jo*@leapsoft.com> wrote in message
news:%2****************@TK2MSFTNGP10.phx.gbl...

Thanks for the reply. I have permission to the share: I'm able to save

a

file to that share from within Word. I'm using the following code:

void FileWatcher::SetFile(String* fullPathName)

{

FileInfo* fi = new FileInfo(fullPathName);

m_watcher->Path = fi->DirectoryName;

m_watcher->EnableRaisingEvents = true;

m_watcher->Filter = fi->Name;

}
and the exact exception is:

A "System.NullReferenceException" occured.
Object reference not set to an instance of an object.

and it occurs on this line:

m_watcher->Path = fi->DirectoryName;

and fi->DirectoryName returns \\Pdc1\cdrive\.

I was doing some searching on the net about the FileSystemWatcher and

found

this link:

http://msdn.microsoft.com/library/de...t4machines.asp
It sounds like FileSystemWatcher has a few problems with network file
watching.

Thanks again and let me know what you think. Jon.
"Michael Giagnocavo [MVP]" <mg*******@Atrevido.net> wrote in message
news:%2****************@TK2MSFTNGP12.phx.gbl...
> First question: Do you have permissions to that share?
>
> Second: please post the full exception and stack trace along with a

small

> bit of code.
>
> Thanks,
> -mike
> MVP
>
> "jlea" <jo*@leapsoft.com> wrote in message
> news:Op**************@TK2MSFTNGP11.phx.gbl...
> > I'm trying to watch a file from my XP-Pro workstation to either a
Win2000
> or
> > a NT4 machine and everytime I try to set the path property to

something

> such
> > as \\PDC1\cdrive\ I get a system.nullException error.
> >
> > Anyone have any ideas? Does this work? It works just fine on my local > > machine: "c:\abc\def\"
> >
> > Thanks. Jon Lea
> >
> >
>
>

[jlea]

I had also made some other changes in my attempt to fix things up when I
stumbled upon this so I don't know if this was the only/real culprit. A
colleague of mine here said he had seen the same behavior with FileInfo so
he wasn't surprised to hear it. Let me know what you find. Jon.

"Michael Giagnocavo [MVP]" <mg*******@Atrevido.net> wrote in message
news:OW**************@TK2MSFTNGP10.phx.gbl...

Great find, let me check into this.

Thanks,
-mike
MVP
"jlea" <jo*@leapsoft.com> wrote in message
news:%2****************@tk2msftngp13.phx.gbl...

Michael - I think I've solved my problem - its amazing what a day makes.
Apparently the FileInfo class drops the last "\" on network files and has

it

for local drives. I added some code to make sure the last "\" is on the
directory name before asssigning it to the path property and things seem

to

work now. So I can use my XP-Pro workstation to watch files on the NT4
server and also on another Win2000 workstation. I'm in the process of
testing it with a Win2000 workstation going to the NT4 server.

Thanks for the help. Jon.
"Michael Giagnocavo [MVP]" <mg*******@Atrevido.net> wrote in message
news:Oy****************@TK2MSFTNGP09.phx.gbl...

What's the full stack trace? And to test, don't use NT4.
-mike
MVP

"jlea" <jo*@leapsoft.com> wrote in message
news:%2****************@TK2MSFTNGP10.phx.gbl...
> Thanks for the reply. I have permission to the share: I'm able to

save

a

> file to that share from within Word. I'm using the following code:
>
> void FileWatcher::SetFile(String* fullPathName)
>
> {
>
> FileInfo* fi = new FileInfo(fullPathName);
>
> m_watcher->Path = fi->DirectoryName;
>
> m_watcher->EnableRaisingEvents = true;
>
> m_watcher->Filter = fi->Name;
>
> }
>
>
> and the exact exception is:
>
> A "System.NullReferenceException" occured.
> Object reference not set to an instance of an object.
>
> and it occurs on this line:
>
> m_watcher->Path = fi->DirectoryName;
>
> and fi->DirectoryName returns \\Pdc1\cdrive\.
>
> I was doing some searching on the net about the FileSystemWatcher and found
> this link:
>
>

http://msdn.microsoft.com/library/de...t4machines.asp

>
> It sounds like FileSystemWatcher has a few problems with network file > watching.
>
> Thanks again and let me know what you think. Jon.
>
>
> "Michael Giagnocavo [MVP]" <mg*******@Atrevido.net> wrote in message
> news:%2****************@TK2MSFTNGP12.phx.gbl...
> > First question: Do you have permissions to that share?
> >
> > Second: please post the full exception and stack trace along with a small
> > bit of code.
> >
> > Thanks,
> > -mike
> > MVP
> >
> > "jlea" <jo*@leapsoft.com> wrote in message
> > news:Op**************@TK2MSFTNGP11.phx.gbl...
> > > I'm trying to watch a file from my XP-Pro workstation to either a > Win2000
> > or
> > > a NT4 machine and everytime I try to set the path property to
something
> > such
> > > as \\PDC1\cdrive\ I get a system.nullException error.
> > >
> > > Anyone have any ideas? Does this work? It works just fine on my

local

> > > machine: "c:\abc\def\"
> > >
> > > Thanks. Jon Lea
> > >
> > >
> >
> >
>
>