(VB.NET) Remove a File from a .zip

Demonstrates how to remove a file from a .zip.

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

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Dim success As Boolean = False

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

' First prepare a .zip and write it..
Dim zip As New Chilkat.Zip

zip.NewZip("qa_output/abc.zip")

' Add some files..
Dim charset As String = "utf-8"
zip.AddString("a.txt","aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",charset)
zip.AddString("b.txt","bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb",charset)
zip.AddString("c.txt","cccccccccccccccccccccccccccccccccccc",charset)

' Write to qa_output/abc.zip
' This .zip contains three files: a.txt, b.txt, and c.txt
success = zip.WriteZipAndClose()

' -------------------------------------------------------------------
' Open abc.zip, remove an entry, and re-write.
Dim zip2 As New Chilkat.Zip
zip2.OpenZip("qa_output/abc.zip")

Dim entry As New Chilkat.ZipEntry
success = zip2.EntryOf("b.txt",entry)
If (success <> False) Then
    zip2.DeleteEntry(entry)
End If


' Write the modified .zip back to "abc.zip"
success = zip2.WriteZip()

' To write to a different filename, change the FileName..
zip2.FileName = "qa_output/ac.zip"
success = zip2.WriteZipAndClose()

Debug.WriteLine("success.")