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9.2

VB.NET Zip and Unzip a Fiile

Asked by CipherIS in Microsoft Visual Basic.Net, .NET Framework 2.x

Tags: MS Visual Studio 2005

I am developing a Winforms application.

I need to zip and unzip a file.  I found this control - http://dotnetzip.codeplex.com/Wiki/View.aspx?title=VB-examples which is pretty cool.  It zips but does not unzip.

I need an example to zip and unzip a file.  If encryption can be added that would be great.  If not password protected would work.

Thx 
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ZIP FILE - This works even the encryption with the DOTNETZIP control
 
        Dim zip As New ZipFile
        'zip.Password = "Secret"
        'zip.Encryption = EncryptionAlgorithm.WinZipAes256
        zip.AddFile(sDir & sZipFile, "")
        zip.Save(sDir & "Download.zip")
 
UNZIP EXAMPLE FILE 1 - Does not unzip
        Dim zip As New ZipFile
        zip.Password = "Secret"
        zip.Encryption = EncryptionAlgorithm.WinZipAes256
        zip.ExtractAll(sDirectory & sZipFile, True)
 
 
UNZIP EXAMPLE FILE 2 - Receive error @ ZipFile.read(sDirectory & sZipFile)
        Dim OverwriteAnyExistingFiles As Boolean = True
        Dim ZipToUnpack As String = "C1P3SML.zip"
        Dim UnpackDirectory As String = "Extracted Files"
 
        Using zip1 As New ZipFile.read(sDirectory & sZipFile)
            zip1.Read(sDirectory & sZipFile)
            'Using zip1 As ZipFile = ZipFile.Read(ZipToUnpack)
            Dim e As ZipEntry
            ' here, we extract every entry, but we could extract conditionally,
            ' based on entry name, size, date, checkbox status, etc.   
            For Each e In zip1
                e.Extract(sDirectory, True)
            Next
            zip1.ExtractAll(sDirectory, True)
            zip1.Extract(sZipFile, sDirectory, True)
        End Using
[+][-]06/27/09 09:33 AM, ID: 24728349Expert Comment

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[+][-]06/27/09 09:46 AM, ID: 24728397Author Comment

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[+][-]06/27/09 10:03 AM, ID: 24728479Accepted Solution

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About this solution

Zones: Microsoft Visual Basic.Net, .NET Framework 2.x
Tags: MS Visual Studio 2005
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Solution Provided By: jpaulino
Participating Experts: 1
Solution Grade: A
 
 
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