(VB.NET) Unzip Selected Files from a Zip Archive

Demonstrates how to iterate over the files contained within a .zip and unzip specific files.

Note: This example requires Chilkat v11.0.0 or greater.

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Dim success As Boolean = False

' This example requires the Chilkat API to have been previously unlocked.
' See Global Unlock Sample for sample code.

Dim zip As New Chilkat.Zip

success = zip.OpenZip("my_files.zip")
If (success = False) Then
    Debug.WriteLine(zip.LastErrorText)
    Exit Sub
End If


Dim unzipDir As String = "/temp/unzipDir"

' Get the number of files and directories in the .zip
Dim n As Integer = zip.NumEntries

Dim entry As New Chilkat.ZipEntry

Dim i As Integer = 0
While i < n

    zip.EntryAt(i,entry)
    If (entry.IsDirectory = False) Then
        ' (the filename may include a path)
        Debug.WriteLine(entry.FileName)

        ' Your application may choose to unzip this entry
        ' based on the filename.
        ' If the entry should be unzipped, then call Extract(unzipDir)
        success = entry.Extract(unzipDir)
        If (success = False) Then
            Debug.WriteLine(entry.LastErrorText)
            Exit Sub
        End If


    End If

    i = i + 1
End While