(VB.NET UWP/WinRT) Unzip an AES Encrypted Text File directly into a String Variable

A common need is to unzip from an AES encrypted Zip archive directly into a string variable, such that the unencrypted file never resides on disk, even temporarily. This example shows how to do it.

Chilkat Universal Windows Platform (UWP) / WinRT Downloads Chilkat for the Universal Windows Platform (UWP)

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

Dim zip As New Chilkat.Zip

' This example opens a WinZip-compatible AES encrypted
' .zip that contains a single file: hamlet.xml.

' It decrypts and unzips hamlet.xml directly into a string
' variable.
zip.SetPassword("secret")
Dim success As Boolean = Await zip.OpenZipAsync("qa_data/hamlet.zip")
If (success <> True) Then
    Debug.WriteLine(zip.LastErrorText)
    Exit Sub
End If


Dim entry As Chilkat.ZipEntry = zip.GetEntryByName("hamlet.xml")
If (zip.LastMethodSuccess = False) Then
    Debug.WriteLine("Failed to find entry in zip")
    Exit Sub
End If


' lineEndingBehavior:
' 0 = leave unchanged.
' 1 = convert all to bare LF's
' 2 = convert all to CRLF's
Dim lineEndingBehavior As Integer = 0
Dim srcCharset As String = "utf-8"
Dim xmlText As String = Await entry.UnzipToStringAsync(lineEndingBehavior,srcCharset)
Debug.WriteLine(xmlText)