Determine if a File exists

[Stephen E. Weber]

I need to determine if a file exists using code.

I tried using the system.io.file. exists function, that will appears to
locate the file if I use the complete filespec, when I move the project to
the web server, that command will not work because I can not specify the
entire path, just the path relative to the default project folder.

Example

This is the path my image property uses: "~/image/NoImageAvailabl e.jpg"

If I use the above system.io.file. exists fails

if I use the full filespec: " E:\Documents and Settings\Steve\ My
Documents\Visua l Studio 2005\WebSites\G shockWatch\NoIm ageAvailable.jp g"

If I use the above system.io.file. exists succeeds.

You see how the second example would not work on an ISPs server.

any suggestions.
thanks
steve

[Jeff Dillon]

Server.MapPath

"Stephen E. Weber" <sw@webersystem s.com> wrote in message
news:eQ******** ******@TK2MSFTN GP03.phx.gbl...

I need to determine if a file exists using code.

I tried using the system.io.file. exists function, that will appears to
locate the file if I use the complete filespec, when I move the project to
the web server, that command will not work because I can not specify the
entire path, just the path relative to the default project folder.

Example

This is the path my image property uses: "~/image/NoImageAvailabl e.jpg"

If I use the above system.io.file. exists fails

if I use the full filespec: " E:\Documents and Settings\Steve\ My
Documents\Visua l Studio 2005\WebSites\G shockWatch\NoIm ageAvailable.jp g"

If I use the above system.io.file. exists succeeds.

You see how the second example would not work on an ISPs server.

any suggestions.
thanks
steve

[Homer J Simpson]

"Stephen E. Weber" <sw@webersystem s.com> wrote in message
news:eQ******** ******@TK2MSFTN GP03.phx.gbl...

Example

This is the path my image property uses: "~/image/NoImageAvailabl e.jpg"

That's a Unix path definition. It means [HOME]/image/NoImageAvailabl e.jpg

[Stephen E. Weber]

Thanks for the advise and information!

ok, that makes sense, I assume in Windows land I can use the ".." for
current folder, do you know if there is a specification for home folder in
windows land?

thanks
Steve

"Homer J Simpson" <no****@nowhere .com> wrote in message
news:c%j%f.7247 9$%H.41820@clgr ps13...

"Stephen E. Weber" <sw@webersystem s.com> wrote in message
news:eQ******** ******@TK2MSFTN GP03.phx.gbl...

Example

This is the path my image property uses: "~/image/NoImageAvailabl e.jpg"

That's a Unix path definition. It means [HOME]/image/NoImageAvailabl e.jpg

[Stephen E. Weber]

Thanks for the tip, but in this case i dont think its gonna apply, I know
what the entire path of the file from the root is, which is what this
command appears to return, I need a way to specify the path from the home
folder on the web site, on most servers I dont have access to the full root
and they differ, Im trying to use a path that will work on any server.

thanks
"Jeff Dillon" <je********@hot mail.com> wrote in message
news:ul******** *****@TK2MSFTNG P04.phx.gbl...

Server.MapPath

"Stephen E. Weber" <sw@webersystem s.com> wrote in message
news:eQ******** ******@TK2MSFTN GP03.phx.gbl...

I need to determine if a file exists using code.

I tried using the system.io.file. exists function, that will appears to
locate the file if I use the complete filespec, when I move the project
to
the web server, that command will not work because I can not specify the
entire path, just the path relative to the default project folder.

Example

This is the path my image property uses: "~/image/NoImageAvailabl e.jpg"

If I use the above system.io.file. exists fails

if I use the full filespec: " E:\Documents and Settings\Steve\ My
Documents\Visua l Studio 2005\WebSites\G shockWatch\NoIm ageAvailable.jp g"

If I use the above system.io.file. exists succeeds.

You see how the second example would not work on an ISPs server.

any suggestions.
thanks
steve

[Homer J Simpson]

"Stephen E. Weber" <sw@webersystem s.com> wrote in message
news:OT******** ******@TK2MSFTN GP02.phx.gbl...

Thanks for the advise and information!

ok, that makes sense, I assume in Windows land I can use the ".." for
current folder, do you know if there is a specification for home folder in
windows land?

Actually . is the current folder, .. is the parent (just like Unix -- which
Gates copied from)

"Special' folders, like My Documents, do have specific .Net names. I've seen
that question answered here before. However there is no real 'Home' folder
in Dos/Windows etc.

See "My.Computer.Fi leSystem.Specia lDirectories Object Members" and
"My.Computer.Fi leSystem.Specia lDirectories Property" for the paths etc.

[Jeff Dillon]

/include/somepath/filename

will always be from the root of the virtual directory

like

c:\inetpub\wwwr oot\vdir\includ e\sompath

Jeff

"Homer J Simpson" <no****@nowhere .com> wrote in message
news:c%j%f.7247 9$%H.41820@clgr ps13...

"Stephen E. Weber" <sw@webersystem s.com> wrote in message
news:eQ******** ******@TK2MSFTN GP03.phx.gbl...

Example

This is the path my image property uses: "~/image/NoImageAvailabl e.jpg"

That's a Unix path definition. It means [HOME]/image/NoImageAvailabl e.jpg

[Jeff Dillon]

That doesn't make any sense. Either server.mappath will give you the fully
qualified path, or simply a relative path from the root will always work too

File.IO needs the fully qualified path.

Jeff
"Stephen E. Weber" <sw@webersystem s.com> wrote in message
news:uV******** *****@TK2MSFTNG P05.phx.gbl...

Thanks for the tip, but in this case i dont think its gonna apply, I know
what the entire path of the file from the root is, which is what this
command appears to return, I need a way to specify the path from the home
folder on the web site, on most servers I dont have access to the full
root and they differ, Im trying to use a path that will work on any
server.

thanks
"Jeff Dillon" <je********@hot mail.com> wrote in message
news:ul******** *****@TK2MSFTNG P04.phx.gbl...

Server.MapPath

"Stephen E. Weber" <sw@webersystem s.com> wrote in message
news:eQ******** ******@TK2MSFTN GP03.phx.gbl...

I need to determine if a file exists using code.

I tried using the system.io.file. exists function, that will appears to
locate the file if I use the complete filespec, when I move the project
to
the web server, that command will not work because I can not specify the
entire path, just the path relative to the default project folder.

Example

This is the path my image property uses: "~/image/NoImageAvailabl e.jpg"

If I use the above system.io.file. exists fails

if I use the full filespec: " E:\Documents and Settings\Steve\ My
Documents\Visua l Studio 2005\WebSites\G shockWatch\NoIm ageAvailable.jp g"

If I use the above system.io.file. exists succeeds.

You see how the second example would not work on an ISPs server.

any suggestions.
thanks
steve