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 zip As New ChilkatZip2

Dim success As Long

'  Any string unlocks the component for the 1st 30-days.
success = zip.UnlockComponent("Anything for 30-day trial")
If (success <> 1) Then
    Text1.Text = Text1.Text & zip.LastErrorText & vbCrLf
    Exit Sub
End If

success = zip.OpenZip("my_files.zip")
If (success <> 1) Then
    Text1.Text = Text1.Text & zip.LastErrorText & vbCrLf
    Exit Sub
End If

Dim unzipCount As Long

'  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
    Text1.Text = Text1.Text & zip.LastErrorText & vbCrLf
Else
    MsgBox "Success!"
End If