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

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

Chilkat .NET Downloads Chilkat .NET Framework Chilkat for .NET Core

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

Dim zip As New Chilkat.Zip

Dim success As Boolean = zip.OpenZip("my_files.zip")
If (success <> True) Then
    Debug.WriteLine(zip.LastErrorText)
    Exit Sub
End If


Dim unzipDir As String = "/temp/unzipDir"

Dim n As Integer

' Get the number of files and directories in the .zip
n = zip.NumEntries
Debug.WriteLine(n)

Dim entry As Chilkat.ZipEntry

Dim i As Integer
For i = 0 To n - 1

    entry = zip.GetEntryByIndex(i)
    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 <> True) Then
            Debug.WriteLine(entry.LastErrorText)
            Exit Sub
        End If

    End If


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