Unzip a .zip Archive

Demonstrates how to open a .zip archive and unzip. The Unzip method extracts the files and directories from a .zip archive and recreates the directory tree rooted at the directory path passed to Unzip.

Download Chilkat 32-bit Zip ActiveX (.msi) (includes objects for .zip, .gz, .bz2, and .Z)

Download All 32-bit Chilkat ActiveX Components (.zip)

Download All 64-bit Chilkat ActiveX Components (.zip)

Dim fso, outFile
Set fso = CreateObject("Scripting.FileSystemObject")
Set outFile = fso.CreateTextFile("output.txt", True)

set zip = CreateObject("Chilkat.Zip2")

'  Any string unlocks the component for the 1st 30-days.
success = zip.UnlockComponent("Anything for 30-day trial")
If (success <> 1) Then
    outFile.WriteLine(zip.LastErrorText)
    WScript.Quit
End If

success = zip.OpenZip("my_files.zip")
If (success <> 1) Then
    outFile.WriteLine(zip.LastErrorText)
    WScript.Quit
End If

'  Returns the number of files and directories unzipped.
'  Unzips to /my_files, re-creating the directory tree
'  from the .zip.
unzipCount = zip.Unzip("/my_files")
If (unzipCount < 0) Then
    outFile.WriteLine(zip.LastErrorText)
Else
    MsgBox "Success!"
End If

outFile.Close