test for existence of file

DC Gringo

How do I test for existence of a file in the file system:

If FileExists(myVa riable & ".pdf") = True
pnlMyPanel.Visi ble = True
End If

--
_____
DC G

Nov 18 '05 #1

Subscribe Reply

1900

Marina

Use the File.Exists method.

"DC Gringo" <dc******@visio ntechnology.net > wrote in message
news:e4******** ******@TK2MSFTN GP10.phx.gbl...

How do I test for existence of a file in the file system:

If FileExists(myVa riable & ".pdf") = True
pnlMyPanel.Visi ble = True
End If

--
_____
DC G

Nov 18 '05 #2

Svein Terje Gaup

You should use a System.IO.FileI nfo object.

The C# code for doing what you want is like this:

FileInfo myFile = new FileInfo(myVari able + ".pdf")
if(myFile.Exist s)
{
pnlMyPanel.Visi ble = true;
}

--
mvh
Svein Terje Gaup

"DC Gringo" <dc******@visio ntechnology.net > wrote in message
news:e4******** ******@TK2MSFTN GP10.phx.gbl...

How do I test for existence of a file in the file system:

If FileExists(myVa riable & ".pdf") = True
pnlMyPanel.Visi ble = True
End If

--
_____
DC G

Nov 18 '05 #3

Svein Terje Gaup

Dim myFile As FileInfo = New FileInfo(myFile Name)
If(myFile.Exist s)
myPanel.Visible = True
End If

Sincerely
Svein Terje Gaup

"DC Gringo" <dc******@visio ntechnology.net > wrote in message
news:e4******** ******@TK2MSFTN GP10.phx.gbl...

How do I test for existence of a file in the file system:

If FileExists(myVa riable & ".pdf") = True
pnlMyPanel.Visi ble = True
End If

--
_____
DC G

Nov 18 '05 #4

Rene Mansveld

....or just use the File class of the System.IO namespace:
If (System.IO.File .Exists(myFile) ) Then
myPanel.Visible = True
End If

--
Hope this helps ...

Rene Mansveld
Spider IT - Germany (was Whitworth Software Solutions)
www.Spider-IT.de / www.Spider-IT.net / www.Spider-IT.org / www.Spider-IT.biz

Please reply to the newsgroup(s) :o)

"Svein Terje Gaup" <st****@broadpa rk.no.spam> schrieb im Newsbeitrag
news:OG******** ******@TK2MSFTN GP09.phx.gbl...

Dim myFile As FileInfo = New FileInfo(myFile Name)
If(myFile.Exist s)
myPanel.Visible = True
End If

Sincerely
Svein Terje Gaup

"DC Gringo" <dc******@visio ntechnology.net > wrote in message
news:e4******** ******@TK2MSFTN GP10.phx.gbl...
How do I test for existence of a file in the file system:

If FileExists(myVa riable & ".pdf") = True
pnlMyPanel.Visi ble = True
End If

--
_____
DC G

Nov 18 '05 #5

DC Gringo

Ok, I'm trying this but is not working. I'm using a path to and from a
webserver location...shou ld that make a difference?

If (System.IO.File .Exists("../folder/anotherfolder/" & aVariable&
"/adocument.pdf") ) Then

pnlIntro.Visibl e = True

End If

_____

DC G

"Rene Mansveld" <R.********@TAK ETHISOUT.Spider-IT.de> wrote in message
news:eF******** ******@TK2MSFTN GP10.phx.gbl...

...or just use the File class of the System.IO namespace:
If (System.IO.File .Exists(myFile) ) Then
myPanel.Visible = True
End If

--
Hope this helps ...

Rene Mansveld
Spider IT - Germany (was Whitworth Software Solutions)
www.Spider-IT.de / www.Spider-IT.net / www.Spider-IT.org / www.Spider-IT.biz
Please reply to the newsgroup(s) :o)

"Svein Terje Gaup" <st****@broadpa rk.no.spam> schrieb im Newsbeitrag
news:OG******** ******@TK2MSFTN GP09.phx.gbl...
Dim myFile As FileInfo = New FileInfo(myFile Name)
If(myFile.Exist s)
myPanel.Visible = True
End If

Sincerely
Svein Terje Gaup

"DC Gringo" <dc******@visio ntechnology.net > wrote in message
news:e4******** ******@TK2MSFTN GP10.phx.gbl...
How do I test for existence of a file in the file system:

If FileExists(myVa riable & ".pdf") = True
pnlMyPanel.Visi ble = True
End If

--
_____
DC G

Nov 18 '05 #6

Drebin

I think you are going to need an absolute path there.. even if you derive it
from your current assembly - I don't think it assumes a "current working
directory".
"DC Gringo" <dc******@visio ntechnology.net > wrote in message
news:Og******** ******@TK2MSFTN GP09.phx.gbl...

Ok, I'm trying this but is not working. I'm using a path to and from a
webserver location...shou ld that make a difference?

If (System.IO.File .Exists("../folder/anotherfolder/" & aVariable&
"/adocument.pdf") ) Then

pnlIntro.Visibl e = True

End If

_____

DC G

"Rene Mansveld" <R.********@TAK ETHISOUT.Spider-IT.de> wrote in message
news:eF******** ******@TK2MSFTN GP10.phx.gbl...
...or just use the File class of the System.IO namespace:
If (System.IO.File .Exists(myFile) ) Then
myPanel.Visible = True
End If

--
Hope this helps ...

Rene Mansveld
Spider IT - Germany (was Whitworth Software Solutions)
www.Spider-IT.de / www.Spider-IT.net / www.Spider-IT.org /

www.Spider-IT.biz

Please reply to the newsgroup(s) :o)

"Svein Terje Gaup" <st****@broadpa rk.no.spam> schrieb im Newsbeitrag
news:OG******** ******@TK2MSFTN GP09.phx.gbl...
Dim myFile As FileInfo = New FileInfo(myFile Name)
If(myFile.Exist s)
myPanel.Visible = True
End If

Sincerely
Svein Terje Gaup

"DC Gringo" <dc******@visio ntechnology.net > wrote in message
news:e4******** ******@TK2MSFTN GP10.phx.gbl...
> How do I test for existence of a file in the file system:
>
> If FileExists(myVa riable & ".pdf") = True
> pnlMyPanel.Visi ble = True
> End If
>
> --
> _____
> DC G
>
>

Nov 18 '05 #7

Kevin Spencer

Don't ever mix up file IO and web server. They are not, never have been, and
never will be, the same. Well, maybe "never will be" is a bit overconfident.
System.IO is a namespace for working with file system objects, NOT web
server objects. That means that the file system will never (again, I may be
a bit too bold to say "never") be able to understand a URL. You are in luck
in one sense, however. The ASP.Net HTTPServerUtili ty has a method which can
translate a URL into a file location: MapPath(). Use Server.MapPath( url) to
convert the URL to a file location, then check if it exists with the correct
path.

--
HTH,
Kevin Spencer
..Net Developer
Microsoft MVP
I get paid good money to
solve puzzles for a living

"DC Gringo" <dc******@visio ntechnology.net > wrote in message
news:Og******** ******@TK2MSFTN GP09.phx.gbl...

Ok, I'm trying this but is not working. I'm using a path to and from a
webserver location...shou ld that make a difference?

If (System.IO.File .Exists("../folder/anotherfolder/" & aVariable&
"/adocument.pdf") ) Then

pnlIntro.Visibl e = True

End If

_____

DC G

"Rene Mansveld" <R.********@TAK ETHISOUT.Spider-IT.de> wrote in message
news:eF******** ******@TK2MSFTN GP10.phx.gbl...
...or just use the File class of the System.IO namespace:
If (System.IO.File .Exists(myFile) ) Then
myPanel.Visible = True
End If

--
Hope this helps ...

Rene Mansveld
Spider IT - Germany (was Whitworth Software Solutions)
www.Spider-IT.de / www.Spider-IT.net / www.Spider-IT.org /

www.Spider-IT.biz

Please reply to the newsgroup(s) :o)

"Svein Terje Gaup" <st****@broadpa rk.no.spam> schrieb im Newsbeitrag
news:OG******** ******@TK2MSFTN GP09.phx.gbl...
Dim myFile As FileInfo = New FileInfo(myFile Name)
If(myFile.Exist s)
myPanel.Visible = True
End If

Sincerely
Svein Terje Gaup

"DC Gringo" <dc******@visio ntechnology.net > wrote in message
news:e4******** ******@TK2MSFTN GP10.phx.gbl...
> How do I test for existence of a file in the file system:
>
> If FileExists(myVa riable & ".pdf") = True
> pnlMyPanel.Visi ble = True
> End If
>
> --
> _____
> DC G
>
>

Nov 18 '05 #8

Matt Berther

Hello DC,

Since you're in a web application, try this:

string file = Server.MapPath( "../folder/anotherfolder/" + aVariable + "/adocument.pdf") ;
if (File.Exists(fi le))
{
pnlIntro.Visibl e=true;
}

--
Matt Berther
http://www.mattberther.com

Ok, I'm trying this but is not working. I'm using a path to and from
a webserver location...shou ld that make a difference?

If (System.IO.File .Exists("../folder/anotherfolder/" & aVariable&
"/adocument.pdf") ) Then

pnlIntro.Visibl e = True

End If

_____

DC G

"Rene Mansveld" <R.********@TAK ETHISOUT.Spider-IT.de> wrote in message
news:eF******** ******@TK2MSFTN GP10.phx.gbl...
...or just use the File class of the System.IO namespace:
If (System.IO.File .Exists(myFile) ) Then
myPanel.Visible = True
End If
--
Hope this helps ...
Rene Mansveld
Spider IT - Germany (was Whitworth Software Solutions)
www.Spider-IT.de / www.Spider-IT.net / www.Spider-IT.org /

www.Spider-IT.biz
Please reply to the newsgroup(s) :o)

"Svein Terje Gaup" <st****@broadpa rk.no.spam> schrieb im Newsbeitrag
news:OG******** ******@TK2MSFTN GP09.phx.gbl...
Dim myFile As FileInfo = New FileInfo(myFile Name)
If(myFile.Exist s)
myPanel.Visible = True
End If
Sincerely
Svein Terje Gaup
"DC Gringo" <dc******@visio ntechnology.net > wrote in message
news:e4******** ******@TK2MSFTN GP10.phx.gbl...

How do I test for existence of a file in the file system:

If FileExists(myVa riable & ".pdf") = True
pnlMyPanel.Visi ble = True
End If
--
_____
DC G

Nov 18 '05 #9

DC Gringo

Still no beans...here's my code...

Dim theFile As String

theFile = Server.MapPath( "/livelihoods/files/" & countryCode & "/intro.pdf")

If System.IO.File. Exists(theFile) = True Then

pnlIntro.Visibl e = True

End If

"Matt Berther" <mb******@hotma il.com> wrote in message
news:eH******** ******@TK2MSFTN GP10.phx.gbl...

Hello DC,

Since you're in a web application, try this:

string file = Server.MapPath( "../folder/anotherfolder/" + aVariable + "/adocument.pdf") ; if (File.Exists(fi le))
{
pnlIntro.Visibl e=true;
}

--
Matt Berther
http://www.mattberther.com
Ok, I'm trying this but is not working. I'm using a path to and from
a webserver location...shou ld that make a difference?

If (System.IO.File .Exists("../folder/anotherfolder/" & aVariable&
"/adocument.pdf") ) Then

pnlIntro.Visibl e = True

End If

_____

DC G

"Rene Mansveld" <R.********@TAK ETHISOUT.Spider-IT.de> wrote in message
news:eF******** ******@TK2MSFTN GP10.phx.gbl...
...or just use the File class of the System.IO namespace:
If (System.IO.File .Exists(myFile) ) Then
myPanel.Visible = True
End If
--
Hope this helps ...
Rene Mansveld
Spider IT - Germany (was Whitworth Software Solutions)
www.Spider-IT.de / www.Spider-IT.net / www.Spider-IT.org /

www.Spider-IT.biz
Please reply to the newsgroup(s) :o)

"Svein Terje Gaup" <st****@broadpa rk.no.spam> schrieb im Newsbeitrag
news:OG******** ******@TK2MSFTN GP09.phx.gbl...

Dim myFile As FileInfo = New FileInfo(myFile Name)
If(myFile.Exist s)
myPanel.Visible = True
End If
Sincerely
Svein Terje Gaup
"DC Gringo" <dc******@visio ntechnology.net > wrote in message
news:e4******** ******@TK2MSFTN GP10.phx.gbl...

> How do I test for existence of a file in the file system:
>
> If FileExists(myVa riable & ".pdf") = True
> pnlMyPanel.Visi ble = True
> End If
> --
> _____
> DC G

Nov 18 '05 #10

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