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asp_web_howto thread: Filesystemobject Paging?
Message #1 by "Or Cingilli" <or@a...> on Mon, 11 Feb 2002 16:11:16
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I am using the following code to display the contents of a directory. Is
there a way to display a certain number of files per page rather than all
of them?
Thanks,
Or
<%@ Language=VBScript %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<%
' ***** Create a dynamic navigation system to allow users to successfully
' navigate, view, and read files placed in a directory on the web
server.
' This directory may contain any number of files of any file type as
well
' as any number of subfolders.
' Upload this file into the same folder as the folder to be shared,
and
' specify the folder's name in the variable 'sDirectory' below.
' ***** Which Folder to Share?
' ********** ********** **********
sDirectory = "Company"
' ********** ********** **********
' ***** Other configurable options
' Which file extensions to allow separated by commas ie: "," Set to ""
or "all" to allow all extensions
' note: Unless proper permissions are set, files that are not allowed will
still be viewable if a user
' inputs the exact web location of the file. The method used here
will only remove the link to the file.
AllowExt = "doc, xls, ppt, txt, mdb"
'AllowExt = "all"
' DenyExt overrides AllowExt
DenyExt = "asp"
' Top navigation separator
Const sChevron = ">" ' "/"
' Always display the navigation path?
Const bShowPath = True 'False
' Always display the root directory?
Const bShowRoot = False 'True
' Page font tag
Const sFont = "<font face=""Verdana, Arial, Helvetica"" size=""2"">"
' Column header font tag
Const sColFont = "<font face=""Verdana, Arial, Helvetica"" size=""2""
COLOR=""#FFFFFF"">"
' Column header color
Const TblHeader = "#BFBFBF" 'Grey
' Directory grid alternating colors
Const FileRow1 = "#b6cbeb" 'Dark Blue
Const FileRow2 = "#cadfff" 'Light Blue
Const FolderRow1 = "#879966" 'Dark Green
Const FolderRow2 = "#c5e095" 'Light Green
' Some nice color pairs
'#91619b 'Dark Purple
'#be9cc5 'Light Purple
'#b6cbeb 'Dark Blue
'#cadfff 'Light Blue
'#879966 'Dark Green
'#c5e095 'Light Green
'#a7342a 'Dark Red
'#df867f 'Light Red
'#f8bc03 'Dark Yellow
'#f8e094 'Light Yellow
' ***** Begin Script
Dim sError
On Error Resume Next
sDirectory = trim(sDirectory)
If right(sDirectory,1) <> "/" Then sDirectory = sDirectory & "/"
' ***** Get subfolder from passed querystring
sDir = sDirectory & Request.querystring("dir")
sDir = trim(sDir)
If right(sDir,1) <> "/" Then sDir = sDir & "/"
' ***** Important! Make sure the subfolder path is in the shared folder.
This keeps
' users from browsing directories outside of the shared. ie: dir=../
' You may want to include some logging code if this happens, here we
just
' put the user back into the default directory.
sFolder = Server.MapPath( sDir )
sDirFolder = Server.MapPath( sDirectory )
sSubFolder = right(sDir,len(sDir)-len(sDirectory))
If instr( sFolder , sDirFolder ) = 0 Then
sFolder = sDirFolder
sSubFolder = ""
sError = sError & " Path not authorized;"
End If
' ***** Load the file system and navigate to our shared folder.
Set objFileObject = Server.CreateObject("Scripting.FileSystemObject")
Set objFolder = objFileObject.GetFolder( sFolder )
' ***** Oops, missing or misspelled folder path.
If IsEmpty( objFolder ) Then
sFolder = sDirFolder
sSubFolder = ""
sDir = sDirectory
Set objFolder = objFileObject.GetFolder( sFolder )
sError = sError & " Folder not found;"
End If
%>
<HTML><BODY BGCOLOR="#FFFFFF" TEXT="#000000" LINK="#000000"
VLINK="#000000">
<TABLE BORDER=0 bgcolor="#f0f0f0" CELLPADDING=0 CELLSPACING=1 width="65%">
<% ' ***** Feel free to edit the above table tag
' ***** Build path navigation
aNames = Split( sSubFolder , "/")
If bShowPath Then
If UBound( aNames ) > 0 Or bShowRoot Then %>
<TR BGCOLOR="#ffffff">
<TD><%= sFont %> </font></TD>
<TD COLSPAN="4"><%= sFont %>
<B> <A HREF="<%= Request.ServerVariables("SCRIPT_NAME") %>"><%= Left
(sDirectory,len(sDirectory)-1) %></A></B>
<% End If
For count = 0 to UBound( aNames ) -1
aURL = aURL & aNames(count) & "/"
%> <%= sChevron %> <B><A HREF="<%= Request.ServerVariables
("SCRIPT_NAME") %>?dir=<%= Server.URLEncode( aURL ) %>"><%= aNames(count) %
></A></B><%
Next %></font></TD></TR><%
End If
For count = 0 to UBound( aNames ) -2
aDirUp = aDirUp & aNames(count) & "/"
Next %>
<TR BGCOLOR="<%= TblHeader %>">
<TD BGCOLOR="#ffffff"><A HREF="<%= Request.ServerVariables
("SCRIPT_NAME") %>?dir=<%= Server.URLEncode( aDirUp ) %>"><font
face="Wingdings" COLOR="<%= TblHeader %>">Ç</font></a></TD>
<TD><%= sColFont %> <B>Filename:</B> </FONT></TD>
<TD><%= sColFont %> <B>Size:</B> </FONT></TD>
<TD><%= sColFont %> <B>File type:</B> </FONT></TD>
<TD><%= sColFont %> <B>Date created:</B> </FONT></TD>
<%
' ***** Iterate through the subfolders in our shared folder.
For Each objFile In objFolder.SubFolders
' ***** Alternate between these two row colors.
If iAlternate = 0 Then
response.write "<TR BGCOLOR=""" & FolderRow1 & """>"
iAlternate = 1
Else
response.write "<TR BGCOLOR=""" & FolderRow2 & """>"
iAlternate = 0
End If
' ***** Display folder with link to navigate
%> <TD align="center" BGCOLOR="<%= TblHeader %>"><font face="Wingdings"
COLOR="#ffffff">0</font></TD>
<TD><%= sFont %> <A HREF="<%= Request.ServerVariables
("SCRIPT_NAME") %>?dir=<%= Server.URLEncode( sSubFolder & objFile.Name )%
>"><%= objFile.Name %></A> </font></TD>
<TD align="right"><%= sFont %> <%= ByteConversion( objFile.Size ) %
> </font></TD>
<TD><%= sFont %> <%= objFile.Type %> </font></TD>
<TD><%= sFont %> <%= objFile.DateCreated %> </font></TD>
</TR>
<%
' ***** Next Folder
NEXT
' ***** Iterate through the files in our shared folder / subfolder.
For Each objFile In objFolder.Files
sFileName = objFile.name
' ***** Only continue if it's a valid extension
If ( IsValidFile (sFileName) ) Then
' ***** Alternate between these two row colors.
' We'll use the same counter variable to continue alternating
between
' the light / dark shade according to the previous folder row
color.
If iAlternate = 0 Then
response.write "<TR BGCOLOR=""" & FileRow1 & """>"
iAlternate = 1
Else
response.write "<TR BGCOLOR=""" & FileRow2 & """>"
iAlternate = 0
End If
' ***** Display file with link to execute / dowload.
%> <TD align="center" BGCOLOR="<%= TblHeader %>"><font face="Wingdings"
COLOR="#ffffff"><</font></TD>
<TD><%= sFont %> <A HREF="<%= sDir %><%= sFileName %>"><%=
sFileName %></A> </font></TD>
<TD ALIGN=RIGHT><%= sFont %> <%= ByteConversion( objFile.Size ) %>
</font></TD>
<TD><%= sFont %> <%= objFile.Type %> </font></TD>
<TD><%= sFont %> <%= objFile.DateCreated %> </font></TD>
</TR><%
End If
' ***** Next File
NEXT
' ***** Clean up those nasty memory leaks
Set objFileObject = nothing
Set objFolder = nothing
' ***** Iterate through and approve extensions
Function IsValidFile(FileName)
If Not AllowExt <> "" or LCase( AllowExt ) = "all" Then
IsValidFile = True
Else
aAllowExt = Split( AllowExt & "," , ",")
IsValidFile = False
For iCnt = 0 to UBound( aAllowExt ) -1
If right( FileName , len( FileName ) - InStrRev( FileName , "." ) )
= Trim(aAllowExt( iCnt )) Then IsValidFile = True
Next
End If
If DenyExt <> "" Then
aDenyExt = Split( DenyExt & "," , ",")
For iCnt = 0 to UBound( aDenyExt ) -1
If right( FileName , len( FileName ) - InStrRev( FileName , "." ) )
= Trim(aDenyExt( iCnt )) Then IsValidFile = False
Next
End If
End Function
' ***** Display friendly byte size
Function ByteConversion(NumberOfBytes)
If NumberOfBytes < 1024 Then
sDisplayBytes = NumberOfBytes & " Bytes"
End If
If NumberOfBytes >= 1024 Then
sDisplayBytes = FormatNumber( NumberOfBytes / 1024, 2) & " KB"
End If
If NumberOfBytes > 1048576 Then
sDisplayBytes = FormatNumber( NumberOfBytes / 1048576, 2) & " MB"
End If
Response.Write sDisplayBytes
End Function
' ***** Did we encounter an Error?
If Err <> 0 or sError <> "" Then
response.write "<TR><TD bgcolor=""#ffffff"" colspan=""5""><font
face=""Verdana, Arial, Helvetica"" color=""red"" size=""1"">ERROR: " &
sError & space(1) & "ASP: " & Err.description & ";</font></TD></TR>"
End If
%>
</TABLE>
</BODY></HTML>
Message #2 by "phil griffiths" <pgtips@m...> on Wed, 13 Feb 2002 14:16:30
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One way would be to load all the filenames into a js array and on the
client-side just display the appropriate number of files, adding
next/previous links to display the others.
HTH
Phil
> I am using the following code to display the contents of a directory. Is
> there a way to display a certain number of files per page rather than
all
> of them?
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