D
DC Gringo
How do I test for existence of a file in the file system:
If FileExists(myVariable & ".pdf") = True
pnlMyPanel.Visible = True
End If
If FileExists(myVariable & ".pdf") = True
pnlMyPanel.Visible = True
End If
M
Marina
Use the File.Exists method.
S
Svein Terje Gaup
You should use a System.IO.FileInfo object.
The C# code for doing what you want is like this:
FileInfo myFile = new FileInfo(myVariable + ".pdf")
if(myFile.Exists)
{
pnlMyPanel.Visible = true;
}
The C# code for doing what you want is like this:
FileInfo myFile = new FileInfo(myVariable + ".pdf")
if(myFile.Exists)
{
pnlMyPanel.Visible = true;
}
S
Svein Terje Gaup
Dim myFile As FileInfo = New FileInfo(myFileName)
If(myFile.Exists)
myPanel.Visible = True
End If
Sincerely
Svein Terje Gaup
If(myFile.Exists)
myPanel.Visible = True
End If
Sincerely
Svein Terje Gaup
R
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)
)
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)
)
D
DC Gringo
Ok, I'm trying this but is not working. I'm using a path to and from a
webserver location...should that make a difference?
If (System.IO.File.Exists("../folder/anotherfolder/" & aVariable&
"/adocument.pdf")) Then
pnlIntro.Visible = True
End If
_____
DC G
webserver location...should that make a difference?
If (System.IO.File.Exists("../folder/anotherfolder/" & aVariable&
"/adocument.pdf")) Then
pnlIntro.Visible = True
End If
_____
DC G
D
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".
from your current assembly - I don't think it assumes a "current working
directory".
K
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 HTTPServerUtility 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
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 HTTPServerUtility 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
M
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(file))
{
pnlIntro.Visible=true;
}
Since you're in a web application, try this:
string file = Server.MapPath("../folder/anotherfolder/" + aVariable + "/adocument.pdf");
if (File.Exists(file))
{
pnlIntro.Visible=true;
}
D
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.Visible = True
End If
Dim theFile As String
theFile = Server.MapPath("/livelihoods/files/" & countryCode & "/intro.pdf")
If System.IO.File.Exists(theFile) = True Then
pnlIntro.Visible = True
End If
M
Matt Berther
Hello DC,
theFile = Server.MapPath("~/livelihoods/files/" & countryCode & "/intro.pdf")
Notice the ~...
The ~ is an alias for the current virtual root. Otherwise you'd be looking in the web applications root folder (ie: c:\inetpub\wwwroot\livelihoods)
theFile = Server.MapPath("~/livelihoods/files/" & countryCode & "/intro.pdf")
Notice the ~...
The ~ is an alias for the current virtual root. Otherwise you'd be looking in the web applications root folder (ie: c:\inetpub\wwwroot\livelihoods)
D
DC Gringo
Really getting frustrated here. I've got the MapPath working and spewing
out the right path...I am able to print it out on the page with <% =
theFileMapped %>. It's just not catching on my conditional statement in the
code behind and making my panel visible. I can turn the panel on and off
manually in the <asp:label visible=> attribute, but it just doesn't work in
my code behind.
In my page:
--------------------
<ASP
ANEL ID="pnlIntro" VISIBLE="False" RUNAT="server"><SPAN
STYLE="FONT-SIZE: 10px">. </SPAN>
<A CLASS="secondNav"
HREF="/livelihoods/<% = countryCode %>/intro.pdf"
TARGET="_blank">Zoning/Profiling Intro</A><BR>
</ASPANEL>
In my code-behind
----------------------------
Public theFile As String
Public theFileMapped As String
Protected WithEvents pnlIntro As System.Web.UI.WebControls.Panel
Private Sub Page_Load(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles MyBase.Load
theFile = "~/livelihoods/files/" & countryCode & "/intro.pdf"
theFileMapped = Server.MapPath(theFile)
If System.IO.File.Exists(theFileMapped) Then
pnlIntro.Visible = True
End If
End Sub
_____
DC G
out the right path...I am able to print it out on the page with <% =
theFileMapped %>. It's just not catching on my conditional statement in the
code behind and making my panel visible. I can turn the panel on and off
manually in the <asp:label visible=> attribute, but it just doesn't work in
my code behind.
In my page:
--------------------
<ASP
ANEL ID="pnlIntro" VISIBLE="False" RUNAT="server"><SPANSTYLE="FONT-SIZE: 10px">. </SPAN>
<A CLASS="secondNav"
HREF="/livelihoods/<% = countryCode %>/intro.pdf"
TARGET="_blank">Zoning/Profiling Intro</A><BR>
</ASP
ANEL>In my code-behind
----------------------------
Public theFile As String
Public theFileMapped As String
Protected WithEvents pnlIntro As System.Web.UI.WebControls.Panel
Private Sub Page_Load(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles MyBase.Load
theFile = "~/livelihoods/files/" & countryCode & "/intro.pdf"
theFileMapped = Server.MapPath(theFile)
If System.IO.File.Exists(theFileMapped) Then
pnlIntro.Visible = True
End If
End Sub
_____
DC G
in the web applications root folder (ie: c:\inetpub\wwwroot\livelihoods)Matt Berther said:
C
Cor Ligthert
DC Gringo,
From the start of the thread I got the idea that you want to use code on the
client side, you cannot.
You can use this code on the serverside either with a webapplication or with
a webservice application. However than should the application have proper
rights to the path's you are using.
I hope this helps?
Cor
"DC Gringo"
From the start of the thread I got the idea that you want to use code on the
client side, you cannot.
You can use this code on the serverside either with a webapplication or with
a webservice application. However than should the application have proper
rights to the path's you are using.
I hope this helps?
Cor
"DC Gringo"
D
Drebin
Hmm.. not sure about that.. (I don't mean that in a sarcastic way, I mean I
really don't know if that's possible) - but what I would use is a
LinkButton - which looks like a regular link, then in your code-behind,
dynamically generate the NavigateUrl property..
really don't know if that's possible) - but what I would use is a
LinkButton - which looks like a regular link, then in your code-behind,
dynamically generate the NavigateUrl property..
DC Gringo said:Really getting frustrated here. I've got the MapPath working and spewing
out the right path...I am able to print it out on the page with <% =
theFileMapped %>. It's just not catching on my conditional statement in the
code behind and making my panel visible. I can turn the panel on and off
manually in the <asp:label visible=> attribute, but it just doesn't work in
my code behind.
In my page:
--------------------
<ASP
STYLE="FONT-SIZE: 10px">. </SPAN>
<A CLASS="secondNav"
HREF="/livelihoods/<% = countryCode %>/intro.pdf"
TARGET="_blank">Zoning/Profiling Intro</A><BR>
</ASP
In my code-behind
----------------------------
Public theFile As String
Public theFileMapped As String
Protected WithEvents pnlIntro As System.Web.UI.WebControls.Panel
Private Sub Page_Load(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles MyBase.Load
theFile = "~/livelihoods/files/" & countryCode & "/intro.pdf"
theFileMapped = Server.MapPath(theFile)
If System.IO.File.Exists(theFileMapped) Then
pnlIntro.Visible = True
End If
End Sub
_____
DC G
lookingMatt Berther said:
in the web applications root folder (ie: c:\inetpub\wwwroot\livelihoods)
D
DC Gringo
I am using this on the server side...I'm determining the existence of a file
on the server side in the page_load of the code-behind to tell the .net
application server whether or not to include a panel in the .html output
that goes out to the client.
I give the "everyone" user full control and still am unable to read the
existence of the file...
_____
dC G
on the server side in the page_load of the code-behind to tell the .net
application server whether or not to include a panel in the .html output
that goes out to the client.
I give the "everyone" user full control and still am unable to read the
existence of the file...
_____
dC G
D
Drebin
Then what about something like this:
Dim strPath as String
strPath = Server.MapPath(".") ' Get the actual physical path of the current
directory
strPath += "../folder/anotherfolder/" & aVariable & "/somefile.pdf"
Response.Write("Path: [" & strPath & "]") ' Write it out to the screen
If (System.IO.File.Exists(strPath)) Then
' Do something
End If
The key difference is that File.Exists can't take relative paths.. so you
need to explicitly tell it EXACTLY what drive, directory and file you are
looking for..
HTH
Dim strPath as String
strPath = Server.MapPath(".") ' Get the actual physical path of the current
directory
strPath += "../folder/anotherfolder/" & aVariable & "/somefile.pdf"
Response.Write("Path: [" & strPath & "]") ' Write it out to the screen
If (System.IO.File.Exists(strPath)) Then
' Do something
End If
The key difference is that File.Exists can't take relative paths.. so you
need to explicitly tell it EXACTLY what drive, directory and file you are
looking for..
HTH
C
Cor Ligthert
DC,
This I tried as test and no problem at all.
Cor
\\\
Private Sub Page_Load(ByVal sender As System.Object, _
ByVal e As System.EventArgs) Handles MyBase.Load
If IO.File.Exists("C:\mytestimage.jpg") Then
Me.Label1.Text = "It is there"
Else
Me.Label1.Text = "It is not there"
End If
End Sub
///
Cor
This I tried as test and no problem at all.
Cor
\\\
Private Sub Page_Load(ByVal sender As System.Object, _
ByVal e As System.EventArgs) Handles MyBase.Load
If IO.File.Exists("C:\mytestimage.jpg") Then
Me.Label1.Text = "It is there"
Else
Me.Label1.Text = "It is not there"
End If
End Sub
///
Cor
D
DC Gringo
Well,
I have found that this does work on another machine...it seems to be
permissions problem...oy yayayaay
Thank you all for you help and attention.
_____
DC G
I have found that this does work on another machine...it seems to be
permissions problem...oy yayayaay
Thank you all for you help and attention.
_____
DC G