(VB.NET) Iterate over Matching Filenames

Iterates over files within a .zip that match a pattern. In this case, the pattern is "*.pem". This example will open a .zip containing files of type .txt, .cer, .pem, and possibly others, and will iterate over only the .pem files.

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

Dim zip As New Chilkat.Zip

' Open a .zip containing PEM files, among other things..
Dim success As Boolean = zip.OpenZip("qa_data/certs/thawte-roots.zip")
If (success <> True) Then
    Debug.WriteLine(zip.LastErrorText)
    Exit Sub
End If


Dim entry As Chilkat.ZipEntry = zip.FirstMatchingEntry("*.pem")
If (zip.LastMethodSuccess <> True) Then
    Debug.WriteLine("No PEM entries found.")
    Exit Sub
End If


Dim nextEntry As Chilkat.ZipEntry
Dim pemStr As String

Dim bContinue As Boolean = True
While (bContinue = True)

    Debug.WriteLine("Entry: " & entry.FileName)

    ' Get the uncommpressed contents of the entry:
    pemStr = entry.UnzipToString(0,"utf-8")
    Debug.WriteLine(pemStr)

    nextEntry = entry.NextMatchingEntry("*.pem")
    bContinue = entry.LastMethodSuccess

    entry = nextEntry
End While