Unzipping in Visual Basic .Net


I

ILCSP

Hello, I've been trying to unzip a file in Visual Basic .Net (03) but
I'm getting an error. I do get the destination directory and I do get
the first extracted file, but then it stops and I get an wrong local
header signature error. I've added the SharpZipLib.dll library to my
project, so that's what I'm using. The zip files contains 9 text
files.

This is the error I get:
An unhandled exception of type 'ICSharpCode.SharpZipLib.ZipException'
occurred in sharpziplib.dll
Additional information: Wrong Local header signature-1826153501

I have the following in the top of my code:
Imports System
Imports System.IO
Imports ICSharpCode.SharpZipLib.Zip

This is what I have in my button:

Private Sub btnUnzip_Click(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles btnUnzip.Click

Dim fileName As String = Path.GetFullPath("c:\testing.zip")
Dim destPath As String = Path.GetFullPath("c:\unzipped\")

If Not Directory.Exists(destPath) Then
Directory.CreateDirectory(destPath)
Else
For Each s As String In Directory.GetFiles(destPath)
File.Delete(s)
Next
End If

Dim inStream As New ZipInputStream(File.OpenRead(fileName))
Dim outStream As FileStream

Dim entry As ZipEntry
Dim buff(2047) As Byte
Dim bytes As Integer

Do While True
entry = inStream.GetNextEntry() <==== This is where the
error occurs!
If entry Is Nothing Then
Exit Do
End If
outStream = File.Create(destPath + entry.Name, 2048)

Do While True
bytes = inStream.Read(buff, 0, 2048)
If bytes = 0 Then
Exit Do
End If
outStream.Write(buff, 0, bytes)
MsgBox("writing")
Loop
outStream.Close()
Loop
inStream.Close()
End Sub

Any help would be greatly appreciated.

Thanks.
 
Ad

Advertisements

I

ILCSP

Hello again, I just want to point out that I created a new zip file
with Winzip with 2 text files in it and tested the code and it worked.
However, when I tested again the Zip file I actually need to unzip, I
still get the Wrong Local header signature-1826153501 error.
 
Ad

Advertisements


Ask a Question

Want to reply to this thread or ask your own question?

You'll need to choose a username for the site, which only take a couple of moments. After that, you can post your question and our members will help you out.

Ask a Question

Similar Threads


Top