VB.NET Examples

ChilkatHOMEASPVisual BasicVB.NETC#Visual C++CMFCDelphiFoxProJavaPerlPHPPythonRubySQL ServerVBScript

VB.NET Examples

Bounced Mail
Character Encoding
Digital Certificates
Digital Signatures
Email
FTP
HTML to XML
HTTP
IMAP
Encryption
MHT / HTML Email
PFX
RSA Encryption
S/MIME
Socket
Spider
Tar Archive
Upload
XML
XMP
Zip Compression
Misc

More Examples...
Email Object
POP3
SMTP
RSS
Atom
Self-Extractor

Byte Array
VB.NET FTPS
System.IO

Unreleased...
Service
PPMD
Deflate
Bzip2
LZW
Bz2
DH Key Exchange
DSA
Icon

 

 

 

 

 

 

Append File and Rename within Zip

Download Chilkat .NET for 2.0 / 3.5 Framework

Download Chilkat .NET for 1.0 / 1.1 Framework

How to append an additional file to a .zip and rename it within the .zip.

Dim zip As New Chilkat.Zip()

Dim success As Boolean

'  Any string unlocks the component for the 1st 30-days.
success = zip.UnlockComponent("Anything for 30-day trial")
If (success <> true) Then
    MsgBox(zip.LastErrorText)
    Exit Sub
End If


'  Open an existing .zip.
'  Note: Opening a zip does not read the entire zip into memory.
'  It simply opens the zip and makes it ready for unzipping
'  or retrieving information and/or data.
success = zip.OpenZip("a.zip")
If (success <> true) Then
    MsgBox(zip.LastErrorText)
    Exit Sub
End If


'  Save the current number of entries.
Dim numEntries As Long
numEntries = zip.NumEntries

'  Append a new file to the .zip.
'  The new entry is at index numEntries (indexing begins at 0).
'  Note: The AppendOneFileOrDir simply adds a reference to the
'  file to the zip object.  The file is not actually read
'  or physically added to the .zip file until the WriteZip or
'  WriteZipAndClose method is called.
Dim saveExtraPath As Boolean
saveExtraPath = false
success = zip.AppendOneFileOrDir("hamlet.xml",saveExtraPath)
If (success <> true) Then
    MsgBox(zip.LastErrorText)
    Exit Sub
End If


'  Get the entry we just added:
Dim entry As Chilkat.ZipEntry
entry = zip.GetEntryByIndex(numEntries)

'  Change the filename.
'  The zip component remembers the file referenced in the filesystem.
'  When the zip is written, the "hamlet.xml" file is read and
'  compressed, but the filename within the zip will be "shakespearePlay.xml".
entry.FileName = "shakespearePlay.xml"


'  Write the .zip
'  The Chilkat Zip component always writes to a temporary file
'  first.  This is to ensure that (in cases like this), if something
'  goes wrong we don't lose the original .zip.  If the write
'  finishes without error, it is moved to the destination
'  file, thus overwriting it.  The TempDir property controls
'  the directory where the temp zip is written.
success = zip.WriteZipAndClose()
If (success <> true) Then
    MsgBox(zip.LastErrorText)
    Exit Sub
End If

 

Need a specific example? Send a request to support@chilkatsoft.com

© 2000-2007 Chilkat Software, Inc. All Rights Reserved.

Mail Component · XML Parser