Error with Code

[abdallahr]

Hi,

I have the following error due to the highlighted text in the code;

'Argumnet not specified for parameter 'outfolder' of 'Public Sub ExtractZipFile(archiveFilenameIn As String, password As String, outFolder As String)'

   Private Sub btnUnpackFolder_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnUnpackFolder.Click
        ExtractZipFile(Label1.Text, Label2.Text)
    End Sub

The function ExtractZipFile is shown below;

Public Sub ExtractZipFile(ByVal archiveFilenameIn As String, ByVal password As String, ByVal outFolder As String)
        Dim zf As ZipFile = Nothing
        Try
            Dim fs As FileStream = File.OpenRead(archiveFilenameIn)
            zf = New ZipFile(fs)
            If Not [String].IsNullOrEmpty(password) Then    ' AES encrypted entries are handled automatically
                zf.Password = password
            End If
            For Each zipEntry As ZipEntry In zf
                If Not zipEntry.IsFile Then     ' Ignore directories
                    Continue For
                End If
                Dim entryFileName As [String] = zipEntry.Name
                ' to remove the folder from the entry:- entryFileName = Path.GetFileName(entryFileName);
                ' Optionally match entrynames against a selection list here to skip as desired.
                ' The unpacked length is available in the zipEntry.Size property.

                Dim buffer As Byte() = New Byte(4095) {}    ' 4K is optimum
                Dim zipStream As Stream = zf.GetInputStream(zipEntry)

                ' Manipulate the output filename here as desired.
                Dim fullZipToPath As [String] = Path.Combine(outFolder, entryFileName)
                Dim directoryName As String = Path.GetDirectoryName(fullZipToPath)
                If directoryName.Length > 0 Then
                    Directory.CreateDirectory(directoryName)
                End If

                ' Unzip file in buffered chunks. This is just as fast as unpacking to a buffer the full size
                ' of the file, but does not waste memory.
                ' The "Using" will close the stream even if an exception occurs.
                Using streamWriter As FileStream = File.Create(fullZipToPath)
                    StreamUtils.Copy(zipStream, streamWriter, buffer)
                End Using
            Next
        Finally
            If zf IsNot Nothing Then
                zf.IsStreamOwner = True     ' Makes close also shut the underlying stream
                ' Ensure we release resources
                zf.Close()
            End If
        End Try
    End Sub

How can I remove the error....

Many thanks

[danasegarane]

This function

Public Sub ExtractZipFile(ByVal archiveFilenameIn As String, ByVal password As String, ByVal outFolder As String)


Expect three paramters archiveFilenameIn ,password and outFolder

You are missing one paramter outFolder

ExtractZipFile(Label1.Text, Label2.Text,Label3.Text)

[abdallahr]

Ok, Resolved that problem by removing (ByVal password As String,) and

 If Not [String].IsNullOrEmpty(password) Then    ' AES encrypted entries are handled automatically
                zf.Password = password
            End If

As I don't need a password parameter.

Now, I have no errors but when I execute I receive the Error when I click the btnUnpackFolder -

UnauthorisedAccessExceptional was unhandled
Access to path
'F:\New Folder\Testzippingutility' is denied

on the ExtractZipFile the following line of coded is highlighed as erroneous

Dim fs As FileStream = File.OpenRead(archiveFilenameIn)

Please note:
Label1 populated with the path: F:\New Folder\Testzippingutility
Label2 populated with the path: F:\New Folder\Testzippingutility2


What am trying to do is- unzip files from Testzippingutility folder and store the results in Testzippingutility2 folder. Using the ExtractZipFile function..

Any help please....

(I think ExtractZipFile is trying to unzip a file rather than a folder - any help with the change please)

Many thanks

[danasegarane]

Do you have the physical directory with this name F:\New Folder\Testzippingutility ?

[abdallahr]

Yes,

and it contains a zip file.

[danasegarane]

Check this file name

Dim fs As FileStream = File.OpenRead(archiveFilenameIn)

archiveFilenameIn - This should be file not directory... What component you use for zipping ?

[abdallahr]

am using the SharpZipLib..

I think at the Dim I should be zipping the folder rather than the filename?

isnt that correct?

[danasegarane]

archiveFilenameIn - This should be the name of the zip file name as F:\New Folder\Testzippingutility\Test.zip

[techgnome]

the folder isn't a zip archive... it CONTAINS a zip archive file. You need to unzip the FILE... archiveFilenameIn should be the path to the FILE, not the folder. It even says FILENAME right in the variable name. That should be a clue.

Why are you trying to unzip the folder rather than the file?

-tg

[abdallahr]

Ok. let me explain..

I'll have a folder which will contain at one time 100-200 zips files, I need the tool to read all these files from the folder, unzip them and copy over to another folder..

Thats my primarily objective..

Any help how I can achieve this..

Note: Am using SharpZipLib and working with Vb.Net 2005..

Thanks

[techgnome]

you do it by using the Directory class, calling the GetFiles method, which will return an array of string of the files in the folder, loop through each one, and unzip each file one by one.

It's that simple.

-tg

[abdallahr]

Any sample / example for the code, please..

Thanks

[danasegarane]

Hope this helps

[techgnome]

Hope this helps

Unzipping the file doesn't seem to be the problem... the code he has will do that... if he would supply a filename rather than a directory to unzip.

@abdallahr -
Step 1 - Search MSDN for Directory.GetFiles ... http://social.msdn.microsoft.com/Sea....GetFiles&ac=3
Step 2 - Look at the documentation for Directory.GetFiles - http://msdn.microsoft.com/en-us/library/07wt70x2.aspx
Step 3 - After reading what the method does... scroll down for an example
Step 4 - UNDERSTAND the sample code
Step 5 - Integrate it with your app

-tg