Question

Can someone help me how to unzip a zip file in VB.Net?

im using “Imports Shell32”

Answer 1

If you take a look at this CodeProject article it should help you. If you are having specific problems you need to put the code and problem discription in your question.

From above article:

Sub UnZip()
    Dim sc As New Shell32.Shell()
    'Create directory in which you will unzip your files .
    IO.Directory.CreateDirectory("D:\extractedFiles") 
    'Declare the folder where the files will be extracted
    Dim output As Shell32.Folder = sc.NameSpace("D:\extractedFiles")
    'Declare your input zip file as folder  .
    Dim input As Shell32.Folder = sc.NameSpace("d:\myzip.zip")
    'Extract the files from the zip file using the CopyHere command .
    output.CopyHere(input.Items, 4)

End Sub

link for Folder.CopyHere Method

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Or if you are using .Net 4.5 you can use the ZipFile Class

Example from Link:

Imports System.IO
Imports System.IO.Compression

Module Module1

    Sub Main()
        Dim startPath As String = "c:\example\start" 
        Dim zipPath As String = "c:\example\result.zip" 
        Dim extractPath As String = "c:\example\extract"

        ZipFile.CreateFromDirectory(startPath, zipPath)

        ZipFile.ExtractToDirectory(zipPath, extractPath)
    End Sub 

End Module