Unzip a file without creating a folder - vb.net

I'm trying to unzip a .zip file. That works all fine, but it always creates a folder with the name of the .zip file.
How can I get the files without creating a new folder?
Imports System.IO.Compression
Private Sub XYform_Load(sender As Object, e As EventArgs) Handles Me.Load
Try
If (Not System.IO.Directory.Exists(System.IO.Path.GetTempPath & "\XML")) Then
System.IO.Directory.CreateDirectory(System.IO.Path.GetTempPath & "\XML")
End If
Catch
End Try
Try
ZipFile.ExtractToDirectory("D:\Test\Test data.zip", System.IO.Path.GetTempPath & "\XML")
Catch
'Allready Exists
End Try
End Sub
If I do it this way it will always create a "Test Data" folder in the "XML" folder.

You need to work with the ZipArchiveEntries individually if you want to manipulate the files.
Here is an example:
Dim zipPath As String = "c:\example\start.zip"
Dim extractPath As String = "c:\example\extract"
Using archive As ZipArchive = ZipFile.OpenRead(zipPath)
For Each entry As ZipArchiveEntry In archive.Entries
entry.ExtractToFile(Path.Combine(extractPath, entry.FullName))
Next
End Using
If you simply want extract to a different directory though, you could use:
Dim zipPath As String = "c:\users\exampleuser\end.zip"
Dim extractPath As String = "c:\users\exampleuser\extract"
Using archive As ZipArchive = ZipFile.Open(zipPath, ZipArchiveMode.Update)
archive.ExtractToDirectory(extractPath)
End Using
Source
Edit:
If you aren't wanting to keep the structure, try this:
Dim zipPath As String = "c:\example\start.zip"
Dim extractPath As String = "c:\example\extract"
Dim zipPath As String = "c:\example\start.zip"
Dim extractPath As String = "c:\example\extract"
Using archive As ZipArchive = ZipFile.OpenRead(zipPath)
For Each entry As ZipArchiveEntry In archive.Entries.Where(Function(a) Not String.IsNullOrEmpty(a.Name))
entry.ExtractToFile(entry.Name)
Next
End Using

Related

Making a program that zip files but having error The process cannot access the file because it is being used by another process

I am trying to make a program that will zip all the files in the same folder.
But I'm having issues with it. It's giving me an error saying the file is being used by another process.
Private Sub btnZip_Click(sender As Object, e As EventArgs) Handles btnZip.Click
Dim extension As String = txtExtension.Text
Dim paths As String = Application.StartupPath
Dim files As String() = Directory.GetFiles(paths, "*.*")
For Each file As String In files
Dim fileName As String = path.GetFileNameWithoutExtension(file)
Dim index As Integer = fileName.IndexOf("_")
If index >= 0 Then
fileName = fileName.Substring(0, index)
End If
ZipFile.CreateFromDirectory(Path.GetDirectoryName(file), paths & "\" & fileName & ".zip", CompressionLevel.Optimal, False)
Next
MessageBox.Show("Files zipped successfully!")
End Sub
I just couldn't figure out what's causing the issue.
as seen in comment, you must exclude your running application from the file list :
add
If Path.GetFileName(file) = Path.GetFileName(System.Diagnostics.Process.GetCurrentProcess().MainModule.FileName) Then Continue For
in for loop
Private Sub btnZip_Click(sender As Object, e As EventArgs) Handles btnZip.Click
Dim extension As String = txtExtension.Text
Dim paths As String = Application.StartupPath
Dim files As String() = Directory.GetFiles(paths, "*.*")
For Each file As String In files
If Path.GetFileName(file) = Path.GetFileName(System.Diagnostics.Process.GetCurrentProcess().MainModule.FileName) Then Continue For
Dim fileName As String = Path.GetFileNameWithoutExtension(file)
Dim index As Integer = fileName.IndexOf("_")
If index >= 0 Then
fileName = fileName.Substring(0, index)
End If
ZipFile.CreateFromDirectory(Path.GetDirectoryName(file), paths & "\" & fileName & ".zip", CompressionLevel.Optimal, False)
Next
MessageBox.Show("Files zipped successfully!")
End Sub

Vb.net problems download

How can I do a check that first download something and only after that it starts up the program.exe?
I already tried to do something like this but it excutes the file when the download is not finished and it throws some errors.
my Code:
Dim client As WebClient = New WebClient
Dim SourcePath As String = "C:\ProgramData\KDetector\UserAssistView.exe"
Dim SaveDirectory As String = "C:\ProgramData\KDetector"
Dim FileName As String = System.IO.Path.GetFileName(SourcePath)
Dim SavePath As String = System.IO.Path.Combine(SaveDirectory, FileName)
If System.IO.File.Exists(SavePath) Then
Process.Start("C:\ProgramData\KDetector\UserAssistView.exe")
Else
client.DownloadFileAsync(New Uri("http://ge.tt/70n8YPr2"), "C:\ProgramData\KDetector\")
Process.Start("C:\ProgramData\KDetector\UserAssistView.exe")
End If
You are calling the asynchronous DownloadFile method. Asynchronous method will not block the calling thread.
In order to avoid the problem, your code must be like this:
Dim downloadLink As String = "http://www.nirsoft.net/utils/userassistview.zip"
Dim saveFilePath As String = "C:\ProgramData\KDetector\userassistvkew.zip"
Dim fileName As String = Path.GetFileNameWithoutExtension(saveFilePath)
Dim client As WebClient = New WebClient
Try
CheckExsist(saveFilePath, fileName)
'Before was client.DownloadFileAsync(New Uri("http://ge.tt/70n8YPr2"))
client.DownloadFile(downloadLink, saveFilePath)
MsgBox("Download file completed. File saved in: " & saveFilePath)
'Zip extraction stuff
Catch ex As Exception
MsgBox(ex.Message)
End Try
This is the CheckExsist sub:
Private Sub CheckExsist(ByRef sourcePath As String, ByVal fileName As String, Optional ByVal counter As Integer = 1)
If System.IO.File.Exists(sourcePath) Then
sourcePath = sourcePath.Replace(Path.GetFileName(sourcePath), "") & fileName & "(" & counter & ")" & Path.GetExtension(sourcePath)
counter += 1
CheckExsist(sourcePath, fileName, counter)
End If
End Sub
I manage to download the software (from the official website) and save it as a .zip. Code the last few rows to programmatically extract the .zip, if you ecounter any problem or bug feel free to ask with another question. Anyways there are alot of post on SO regarding zip extraction on vb.net

change extension and move file, using vb.net

I have the following code, which changes the extension of a txt to doc, and then moves it (from d:\1 to d:\2). The extension changes successfully, but it does not move, and I get an error
Cannot create a file when that file already exists.
Please suggest.
For Each filePath In Directory.GetFiles("D:\1", "*.txt")
File.Move(filePath, Path.ChangeExtension(filePath, ".doc"))
Next
Dim filesToMove = From f In New DirectoryInfo("d:\1").EnumerateFiles("*.doc")
For Each f In filesToMove
f.MoveTo("d:\2")
Next
This will check for an existing file of the same name and delete it first (you may want to handle this differently). It will then move and rename in one call to File.Move
Dim directory1 = "D:\1"
Dim directory2 = "D:\2"
For Each oldFileName In Directory.GetFiles(directory1, "*.txt")
Dim newFileName = Path.ChangeExtension(oldFileName, ".doc").Replace(directory1, directory2)
If File.Exists(newFileName) Then File.Delete(newFileName)
File.Move(oldFileName, newFileName)
Next
ok, finally found the solution. not very professional, but works anyways: ( Many thanks to all members who have helped earlier)
Private Sub logchange(ByVal source As Object,
ByVal e As System.IO.FileSystemEventArgs)
If e.ChangeType = IO.WatcherChangeTypes.Changed Then
Dim sourceDirectory As String = "D:\1"
Dim archiveDirectory As String = "D:\2"
Try
Dim jpgFiles = Directory.EnumerateFiles(sourceDirectory, "*.wav")
For Each currentFile As String In jpgFiles
Dim fileName = Path.GetFileName(currentFile)
Directory.Move(currentFile, Path.Combine(archiveDirectory,
Path.GetFileNameWithoutExtension(fileName) & ".doc"))
Next
Catch ex As Exception
Console.WriteLine(ex.Message)
End Try
End If
If e.ChangeType = IO.WatcherChangeTypes.Created Then
Dim sourceDirectory As String = "D:\1"
Dim archiveDirectory As String = "D:\2"
Try
Dim jpgFiles = Directory.EnumerateFiles(sourceDirectory, "*.wav")
For Each currentFile As String In jpgFiles
Dim fileName = Path.GetFileName(currentFile)
Directory.Move(currentFile, Path.Combine(archiveDirectory,
Path.GetFileNameWithoutExtension(fileName) & ".doc"))
Next
Catch ex As Exception
Console.WriteLine(ex.Message)
End Try
End If
End Sub

VB.NET - Problems trying to write a textfile

I have problems when trying to delete/create/write to this file.
The error:
The process cannot access the file 'C:\Users\Administrador\AppData\Local\Temp\PlayList_temp.txt' because it is being used by another process.
The highlighted lines by debugger:
If System.IO.File.Exists(Temp_file) = True Then System.IO.File.Delete(Temp_file)
System.IO.File.Create(Temp_file)
(Any of two, if I delete one line, the other line takes the same error id)
The sub:
Public Sub C1Button2_Click(sender As Object, e As EventArgs) Handles Button1.Click
If Not playerargs = Nothing Then
Dim Str As String
Dim Pattern As String = ControlChars.Quote
Dim ArgsArray() As String
Dim Temp_file As String = System.IO.Path.GetTempPath & "\PlayList_temp.txt"
Dim objWriter As New System.IO.StreamWriter(Temp_file)
Str = Replace(playerargs, " " & ControlChars.Quote, "")
ArgsArray = Split(Str, Pattern)
If System.IO.File.Exists(Temp_file) = True Then System.IO.File.Delete(Temp_file)
System.IO.File.Create(Temp_file)
For Each folder In ArgsArray
If Not folder = Nothing Then
Dim di As New IO.DirectoryInfo(folder)
Dim files As IO.FileInfo() = di.GetFiles("*")
Dim file As IO.FileInfo
For Each file In files
' command to writleline
'Console.WriteLine("File Name: {0}", file.Name)
'Console.WriteLine("File Full Name: {0}", file.FullName)
objWriter.Write(file.FullName)
objWriter.Close()
Next
End If
Next
If randomize.Checked = True Then
RandomiseFile(Temp_file)
End If
Process.Start(userSelectedPlayerFilePath, playerargs)
If autoclose.Checked = True Then
Me.Close()
End If
Else
MessageBox.Show("You must select at least one folder...", My.Settings.APPName)
End If
End Sub
First, File.Create creates or overwrite the file specified, so you don't need to Delete it before.
Second, initializing a StreamWriter as you do, blocks the file and therefore you can't recreate it after.
So, simply move the StreamWriter intialization after the File.Create, or better, remove altogether the File.Create and use the StreamWriter overload that overwrites the file
....
If Not playerargs = Nothing Then
....
Dim Temp_file As String = System.IO.Path.GetTempPath & "\PlayList_temp.txt"
Using objWriter As New System.IO.StreamWriter(Temp_file, false)
For Each folder In ArgsArray
If Not folder = Nothing Then
Dim di As New IO.DirectoryInfo(folder)
Dim files As IO.FileInfo() = di.GetFiles("*")
Dim file As IO.FileInfo
For Each file In files
' command to writleline
'Console.WriteLine("File Name: {0}", file.Name)
'Console.WriteLine("File Full Name: {0}", file.FullName)
objWriter.Write(file.FullName)
' objWriter.Close()
Next
End If
Next
End Using ' Flush, close and dispose the objWriter
....
Noticed also that you close the writer while still inside the loop, use the Using statement to close correctly the writer after the work is done.
The process cannot access the file 'C:\Users\Administrador\AppData\Local\Temp\PlayList_temp.txt' because it is being used by another process.
That means the file is opened or been used by another process.
Open your task manager and check if the file is there, then close it or simplex end the process.
I have had the same issue but I got it solved by closing the file.
Hope this helps!
From your details it seems that you are willing to delete if file exists and creates a new one.
I would suggest to remove this line:
System.IO.File.Create(Temp_file)
and move this line just over the streamwriter line:
If System.IO.File.Exists(Temp_file) = True Then System.IO.File.Delete(Temp_file)
Something like this would help you:
Partial code:
Dim Temp_file As String = System.IO.Path.GetTempPath & "\PlayList_temp.txt"
' Delete file if exists
If System.IO.File.Exists(Temp_file) = True Then System.IO.File.Delete(Temp_file)
' Create file for write.
Dim objWriter As New System.IO.StreamWriter(Temp_file)
Str = Replace(playerargs, " " & ControlChars.Quote, "")
ArgsArray = Split(Str, Pattern)
...
...
...

How do I copy a file that contains the same string as the directory?

I currently have these directories:
C:\testfolder\100
C:\testfolder\101
C:\testfolder\102
and I have these files in the same directory:
C:\testfolder\file-100.txt
C:\testfolder\file-101.txt
C:\testfolder\file-102.txt
What I was trying to do in VB is move text file file-100.txt to the 100 directory. Same for text file file-101.txt, move it to its pertaining folder 101.
My question is how can I write a loop so that my program matches part of the string of my text file name and move it to the matching folder name? Moving one file at a time wouldn't be effecient since I have hundreds of directories and files to apply this to.
Edit:
I'm somewhat familiar with VB. I was having trouble with the logical part of this, in which I couldn't think of a way to write a loop so that it can transfer the files for me.
Without error checking, this would be a simple routine to move those files. It's based on your file names being consistent:
Private Sub Button1_Click(ByVal sender As Object, ByVal e As EventArgs) Handles Button1.Click
Dim homePath As String = "c:\testfolder"
Dim files() As String = Directory.GetFiles(homePath, "*.txt")
For Each f As String In files
Dim fileName As String = Path.GetFileName(f)
Dim destPath As String = Path.GetFileNameWithoutExtension(fileName)
destPath = destPath.Split("-")(1)
destPath = Path.Combine(homePath, destPath)
Dim destFile As String = Path.Combine(destPath, fileName)
File.Move(f, destFile)
Next
End Sub
This just gets the list of text files in your directory, parses the file name to get just the number value (100, 101, etc), and then reconstructs the new path. It assumes the directories exist, too.
You can use regular expression to find matched pattern
Dim dir As String = "C:\testfolder\"
Dim fileList() As String = {"C:\testfolder\file-100.txt", _
"C:\testfolder\file-101.txt", _
"C:\testfolder\file-102.txt"}
Dim pattern As New Regex(Replace(dir, "\", "\\") & "file-([0-9]+)[.]txt")
For Each value As String In fileList
Dim match As Match = pattern.Match(value)
If match.Success Then
MsgBox("move from " & dir & " to " & dir & match.Groups(1).Value)
End If
Next
Make sure you have import RegularExpressions.
Imports System.Text.RegularExpressions
Private Sub organizeFiles(ByVal folderPath As String)
For Each filePath As String In Directory.GetFiles(folderPath, "*.txt")
Dim destinationFilePath As String = getDestinationFilePath(filePath)
If destinationFilePath IsNot Nothing Then
File.Move(filePath, destinationFilePath)
End If
Next
End Sub
Private Function getDestinationFilePath(ByVal filePath As String) As String
Const fileNamePrefix As String = "file-"
Dim fileName As String = Path.GetFileName(filePath)
Dim fileNameWithoutExtension As String = Path.GetFileNameWithoutExtension(filePath)
If Not fileNameWithoutExtension.StartsWith(fileNamePrefix) Then
Return Nothing
End If
Dim folderName As String = fileNameWithoutExtension.Substring(fileNamePrefix.Length)
Dim fileFolderPath As String = Path.GetDirectoryName(filePath)
Dim destinationFolderPath As String = Path.Combine(fileFolderPath, folderName)
Dim destinationFilePath As String = Path.Combine(destinationFolderPath, fileName)
Return destinationFilePath
End Function