I am using DotNetZip library to compress files. my code is given below
String[] filenames = { "D:\\Data\\ReadMe.txt", "c:\\data\\collection.csv","c:\\ProgramFiles\\reports AnnualSummary.pdf"};
using (ZipFile zip = new ZipFile())
{
zip.AddFiles(filenames, "files");
zip.Save("Archive.zip");
}
Now when the Archive.zip is created, there are folders created in the archive with the same name(e.g Data, ProgramFiles etc)for files in which they were stored.
My target is to compress all the files in Archive.zip without any folder in the archive. how can I achieve it?
The AddFiles has an overload to flatten the directory structure in the zip archive
public void AddFiles(
IEnumerable<string> fileNames,
bool preserveDirHierarchy,
string directoryPathInArchive
)
http://dotnetzip.herobo.com/DNZHelp/html/c64e89d3-2f1f-2886-16bc-291746b46718.htm
zip.AddFiles(filenames, false, "files");
The second parameter preserveDirHierarchy can be passed as false to have all files in the root of the zip archive. Be careful that you do not have files with the same name when doing this. It will throw an Exception for duplicate file names.
Related
I am trying to extract files from zip files using the DotNetZip library. I am able to extract files when it is a single .zip file. However, when I try to extract files from a multi volume zip file like Something.zip.0 or Something.zip.1, I get the following two exceptions:
-Exception thrown: 'Ionic.Zip.BadReadException' in Ionic.Zip.dll
-Exception thrown: 'Ionic.Zip.ZipException' in Ionic.Zip.dll
Is it possible for DotNetZip to read these type of files, or should I be looking into an alternative approach? I am working on Visual Studios using C#.
Here's a snippet of how I implement my zip file extraction.
using (Ionic.Zip.ZipFile zip = Ionic.Zip.ZipFile.Read(_pathToZip))
{
zip.CompressionLevel = Ionic.Zlib.CompressionLevel.BestSpeed;
foreach(Ionic.Zip.ZipEntry ze in zip)
{
string fileName = ze.FileName;
bool isThereItemToExtract = isThereMatch(fileName.ToLower(), _folderList, _fileList);
if (isThereItemToExtract)
{
string pathOfFileToExtract = (_destinationPath + "\\" + ze.FileName).Replace('/', '\\');
string pathInNewZipFile = goUpOneDirectoryRelative(ze.FileName);
ze.Extract(_destinationPath, Ionic.Zip.ExtractExistingFileAction.OverwriteSilently);
_newZip.AddItem(pathOfFileToExtract, pathInNewZipFile);
}
}
_newZip.Save();
}
Please refer the DotNetZipLibrary code examples:
using Ionic.Zip;
private void MyExtract(string zipToUnpack, string unpackDirectory)
{
using (ZipFile zip1 = ZipFile.Read(zipToUnpack))
{
// here, we extract every entry, but we could extract conditionally
// based on entry name, size, date, checkbox status, etc.
foreach (ZipEntry e in zip1)
{
e.Extract(unpackDirectory, ExtractExistingFileAction.OverwriteSilently);
}
}
}
This method should be able to extract either split and not split zip files.
Every zip entry will be extracted with its full path as specified in the zip archive, relative to the current unpackDirectory.
There's no need to check if zip entry exsists (isThereItemToExtract). Interating the zip entries with foreach should do the job.
To avoid collisions you need to check if file with same name as zipEntry exsists in the unpackDirectory, or use ExtractExistingFileAction.OverwriteSilently flag.
Is it possible for DotNetZip to read these type of files, or should I be looking into an alternative approach? I am working on Visual Studios using C#.
In my experience, this is the best library to deal with split zip files.
I have the following code set up to create a zip file of a set of doucments:
public bool CreateDocumentationZipFile(int documentIdentifier, string zipDestinationPath, IList<string> documentPaths)
{
bool zipped = false;
if (documentPaths.Count > 0)
{
using (ZipFile loanZip = new ZipFile())
{
loanZip.AddFiles(documentPaths, false, zipDestinationPath);
loanZip.Save(string.Format("{0}{1}.zip",zipDestinationPath, documentIdentifier.ToString()));
zipped = true;
}
}
return zipped;
}
The issue I have is that when the zip file is created, the folder structure is maintaned within the zip file:
e.g
I am creating a zip of a selection of documents located at
C:\SoftwareDevelopment\Branches\ScannedDocuments\
When the created zip file is opened, there is a folder structure within the zip as follows:
Folder 1 ("SoftwareDevelopment")
Inside Folder 1 is folder 2 ("Branches")
Inside Folder 2 is folder 3 ("ScannedDocuments")
the scanned documents folder then contains the actual scan files.
Can anyone tell me how I can just have the scan files in the zip without the folders path being maintained?
The documentation states that the third parameter
directoryPathInArchive (String)
Specifies a directory path to use to override any path in the file
name. This path may, or may not, correspond to a real directory in the
current filesystem. If the files within the zip are later extracted,
this is the path used for the extracted file. Passing null (Nothing in
VB) will use the path on each of the fileNames, if any. Passing the
empty string ("") will insert the item at the root path within the
archive.
So if you always want to have the files added to the root of your zip archive, change
loanZip.AddFiles(documentPaths, false, zipDestinationPath);
to
loanZip.AddFiles(documentPaths, false, "");
I tried the zip.AddDirectory thing, but I can't figure out how to import a whole folder to an archive(Using DotNetZip).
I do NOT want this:
But this:
From the DotNetZip source code examples :
Remap directories. Zip up a set of files and directories, and re-map them into a different directory hierarchy in the zip file:
using (ZipFile zip = new ZipFile())
{
// files in the filesystem like MyDocuments\ProjectX\File1.txt , will be stored in the zip archive as backup\File1.txt
zip.AddDirectory(#"MyDocuments\ProjectX", "backup");
// files in the filesystem like MyMusic\Santana\OyeComoVa.mp3, will be stored in the zip archive as tunes\Santana\OyeComoVa.mp3
zip.AddDirectory("MyMusic", "tunes");
// The Readme.txt file in the filesystem will be stored in the zip archive as documents\Readme.txt
zip.AddDirectory("Readme.txt", "documents");
zip.Comment = "This zip was created at " + System.DateTime.Now.ToString("G") ;
zip.Save(ZipFileToCreate);
}
What is an example (simple code) of how to zip a folder in C#?
Update:
I do not see namespace ICSharpCode. I downloaded ICSharpCode.SharpZipLib.dll but I do not know where to copy that DLL file. What do I need to do to see this namespace?
And do you have link for that MSDN example for compress folder, because I read all MSDN but I couldn't find anything.
OK, but I need next information.
Where should I copy ICSharpCode.SharpZipLib.dll to see that namespace in Visual Studio?
This answer changes with .NET 4.5. Creating a zip file becomes incredibly easy. No third-party libraries will be required.
string startPath = #"c:\example\start";
string zipPath = #"c:\example\result.zip";
string extractPath = #"c:\example\extract";
ZipFile.CreateFromDirectory(startPath, zipPath);
ZipFile.ExtractToDirectory(zipPath, extractPath);
From the DotNetZip help file, http://dotnetzip.codeplex.com/releases/
using (ZipFile zip = new ZipFile())
{
zip.UseUnicodeAsNecessary= true; // utf-8
zip.AddDirectory(#"MyDocuments\ProjectX");
zip.Comment = "This zip was created at " + System.DateTime.Now.ToString("G") ;
zip.Save(pathToSaveZipFile);
}
There's nothing in the BCL to do this for you, but there are two great libraries for .NET which do support the functionality.
SharpZipLib
DotNetZip
I've used both and can say that the two are very complete and have well-designed APIs, so it's mainly a matter of personal preference.
I'm not sure whether they explicitly support adding Folders rather than just individual files to zip files, but it should be quite easy to create something that recursively iterated over a directory and its sub-directories using the DirectoryInfo and FileInfo classes.
In .NET 4.5 the ZipFile.CreateFromDirectory(startPath, zipPath); method does not cover a scenario where you wish to zip a number of files and sub-folders without having to put them within a folder. This is valid when you wish the unzip to put the files directly within the current folder.
This code worked for me:
public static class FileExtensions
{
public static IEnumerable<FileSystemInfo> AllFilesAndFolders(this DirectoryInfo dir)
{
foreach (var f in dir.GetFiles())
yield return f;
foreach (var d in dir.GetDirectories())
{
yield return d;
foreach (var o in AllFilesAndFolders(d))
yield return o;
}
}
}
void Test()
{
DirectoryInfo from = new DirectoryInfo(#"C:\Test");
using (var zipToOpen = new FileStream(#"Test.zip", FileMode.Create))
{
using (var archive = new ZipArchive(zipToOpen, ZipArchiveMode.Create))
{
foreach (var file in from.AllFilesAndFolders().OfType<FileInfo>())
{
var relPath = file.FullName.Substring(from.FullName.Length+1);
ZipArchiveEntry readmeEntry = archive.CreateEntryFromFile(file.FullName, relPath);
}
}
}
}
Folders don't need to be "created" in the zip-archive. The second parameter "entryName" in CreateEntryFromFile should be a relative path, and when unpacking the zip-file the directories of the relative paths will be detected and created.
There is a ZipPackage class in the System.IO.Packaging namespace which is built into .NET 3, 3.5, and 4.0.
http://msdn.microsoft.com/en-us/library/system.io.packaging.zippackage.aspx
Here is an example how to use it.
http://www.codeproject.com/KB/files/ZipUnZipTool.aspx?display=Print
There's an article over on MSDN that has a sample application for zipping and unzipping files and folders purely in C#. I've been using some of the classes in that successfully for a long time. The code is released under the Microsoft Permissive License, if you need to know that sort of thing.
EDIT: Thanks to Cheeso for pointing out that I'm a bit behind the times. The MSDN example I pointed to is in fact using DotNetZip and is really very fully-featured these days. Based on my experience of a previous version of this I'd happily recommend it.
SharpZipLib is also quite a mature library and is highly rated by people, and is available under the GPL license. It really depends on your zipping needs and how you view the license terms for each of them.
Rich
using DotNetZip (available as nuget package):
public void Zip(string source, string destination)
{
using (ZipFile zip = new ZipFile
{
CompressionLevel = CompressionLevel.BestCompression
})
{
var files = Directory.GetFiles(source, "*",
SearchOption.AllDirectories).
Where(f => Path.GetExtension(f).
ToLowerInvariant() != ".zip").ToArray();
foreach (var f in files)
{
zip.AddFile(f, GetCleanFolderName(source, f));
}
var destinationFilename = destination;
if (Directory.Exists(destination) && !destination.EndsWith(".zip"))
{
destinationFilename += $"\\{new DirectoryInfo(source).Name}-{DateTime.Now:yyyy-MM-dd-HH-mm-ss-ffffff}.zip";
}
zip.Save(destinationFilename);
}
}
private string GetCleanFolderName(string source, string filepath)
{
if (string.IsNullOrWhiteSpace(filepath))
{
return string.Empty;
}
var result = filepath.Substring(source.Length);
if (result.StartsWith("\\"))
{
result = result.Substring(1);
}
result = result.Substring(0, result.Length - new FileInfo(filepath).Name.Length);
return result;
}
Usage:
Zip(#"c:\somefolder\subfolder\source", #"c:\somefolder2\subfolder2\dest");
Or
Zip(#"c:\somefolder\subfolder\source", #"c:\somefolder2\subfolder2\dest\output.zip");
Following code uses a third-party ZIP component from Rebex:
// add content of the local directory C:\Data\
// to the root directory in the ZIP archive
// (ZIP archive C:\archive.zip doesn't have to exist)
Rebex.IO.Compression.ZipArchive.Add(#"C:\archive.zip", #"C:\Data\*", "");
Or if you want to add more folders without need to open and close archive multiple times:
using Rebex.IO.Compression;
...
// open the ZIP archive from an existing file
ZipArchive zip = new ZipArchive(#"C:\archive.zip", ArchiveOpenMode.OpenOrCreate);
// add first folder
zip.Add(#"c:\first\folder\*","\first\folder");
// add second folder
zip.Add(#"c:\second\folder\*","\second\folder");
// close the archive
zip.Close(ArchiveSaveAction.Auto);
You can download the ZIP component here.
Using a free, LGPL licensed SharpZipLib is a common alternative.
Disclaimer: I work for Rebex
"Where should I copy ICSharpCode.SharpZipLib.dll to see that namespace in Visual Studio?"
You need to add the dll file as a reference in your project. Right click on References in the Solution Explorer->Add Reference->Browse and then select the dll.
Finally you'll need to add it as a using statement in whatever files you want to use it in.
ComponentPro ZIP can help you achieve that task. The following code snippet compress files and dirs in a folder. You can use wilcard mask as well.
using ComponentPro.Compression;
using ComponentPro.IO;
...
// Create a new instance.
Zip zip = new Zip();
// Create a new zip file.
zip.Create("test.zip");
zip.Add(#"D:\Temp\Abc"); // Add entire D:\Temp\Abc folder to the archive.
// Add all files and subdirectories from 'c:\test' to the archive.
zip.AddFiles(#"c:\test");
// Add all files and subdirectories from 'c:\my folder' to the archive.
zip.AddFiles(#"c:\my folder", "");
// Add all files and subdirectories from 'c:\my folder' to '22' folder within the archive.
zip.AddFiles(#"c:\my folder2", "22");
// Add all .dat files from 'c:\my folder' to '22' folder within the archive.
zip.AddFiles(#"c:\my folder2", "22", "*.dat");
// Or simply use this to add all .dat files from 'c:\my folder' to '22' folder within the archive.
zip.AddFiles(#"c:\my folder2\*.dat", "22");
// Add *.dat and *.exe files from 'c:\my folder' to '22' folder within the archive.
zip.AddFiles(#"c:\my folder2\*.dat;*.exe", "22");
TransferOptions opt = new TransferOptions();
// Donot add empty directories.
opt.CreateEmptyDirectories = false;
zip.AddFiles(#"c:\abc", "/", opt);
// Close the zip file.
zip.Close();
http://www.componentpro.com/doc/zip has more examples
What is an example (simple code) of how to zip a folder in C#?
Update:
I do not see namespace ICSharpCode. I downloaded ICSharpCode.SharpZipLib.dll but I do not know where to copy that DLL file. What do I need to do to see this namespace?
And do you have link for that MSDN example for compress folder, because I read all MSDN but I couldn't find anything.
OK, but I need next information.
Where should I copy ICSharpCode.SharpZipLib.dll to see that namespace in Visual Studio?
This answer changes with .NET 4.5. Creating a zip file becomes incredibly easy. No third-party libraries will be required.
string startPath = #"c:\example\start";
string zipPath = #"c:\example\result.zip";
string extractPath = #"c:\example\extract";
ZipFile.CreateFromDirectory(startPath, zipPath);
ZipFile.ExtractToDirectory(zipPath, extractPath);
From the DotNetZip help file, http://dotnetzip.codeplex.com/releases/
using (ZipFile zip = new ZipFile())
{
zip.UseUnicodeAsNecessary= true; // utf-8
zip.AddDirectory(#"MyDocuments\ProjectX");
zip.Comment = "This zip was created at " + System.DateTime.Now.ToString("G") ;
zip.Save(pathToSaveZipFile);
}
There's nothing in the BCL to do this for you, but there are two great libraries for .NET which do support the functionality.
SharpZipLib
DotNetZip
I've used both and can say that the two are very complete and have well-designed APIs, so it's mainly a matter of personal preference.
I'm not sure whether they explicitly support adding Folders rather than just individual files to zip files, but it should be quite easy to create something that recursively iterated over a directory and its sub-directories using the DirectoryInfo and FileInfo classes.
In .NET 4.5 the ZipFile.CreateFromDirectory(startPath, zipPath); method does not cover a scenario where you wish to zip a number of files and sub-folders without having to put them within a folder. This is valid when you wish the unzip to put the files directly within the current folder.
This code worked for me:
public static class FileExtensions
{
public static IEnumerable<FileSystemInfo> AllFilesAndFolders(this DirectoryInfo dir)
{
foreach (var f in dir.GetFiles())
yield return f;
foreach (var d in dir.GetDirectories())
{
yield return d;
foreach (var o in AllFilesAndFolders(d))
yield return o;
}
}
}
void Test()
{
DirectoryInfo from = new DirectoryInfo(#"C:\Test");
using (var zipToOpen = new FileStream(#"Test.zip", FileMode.Create))
{
using (var archive = new ZipArchive(zipToOpen, ZipArchiveMode.Create))
{
foreach (var file in from.AllFilesAndFolders().OfType<FileInfo>())
{
var relPath = file.FullName.Substring(from.FullName.Length+1);
ZipArchiveEntry readmeEntry = archive.CreateEntryFromFile(file.FullName, relPath);
}
}
}
}
Folders don't need to be "created" in the zip-archive. The second parameter "entryName" in CreateEntryFromFile should be a relative path, and when unpacking the zip-file the directories of the relative paths will be detected and created.
There is a ZipPackage class in the System.IO.Packaging namespace which is built into .NET 3, 3.5, and 4.0.
http://msdn.microsoft.com/en-us/library/system.io.packaging.zippackage.aspx
Here is an example how to use it.
http://www.codeproject.com/KB/files/ZipUnZipTool.aspx?display=Print
There's an article over on MSDN that has a sample application for zipping and unzipping files and folders purely in C#. I've been using some of the classes in that successfully for a long time. The code is released under the Microsoft Permissive License, if you need to know that sort of thing.
EDIT: Thanks to Cheeso for pointing out that I'm a bit behind the times. The MSDN example I pointed to is in fact using DotNetZip and is really very fully-featured these days. Based on my experience of a previous version of this I'd happily recommend it.
SharpZipLib is also quite a mature library and is highly rated by people, and is available under the GPL license. It really depends on your zipping needs and how you view the license terms for each of them.
Rich
using DotNetZip (available as nuget package):
public void Zip(string source, string destination)
{
using (ZipFile zip = new ZipFile
{
CompressionLevel = CompressionLevel.BestCompression
})
{
var files = Directory.GetFiles(source, "*",
SearchOption.AllDirectories).
Where(f => Path.GetExtension(f).
ToLowerInvariant() != ".zip").ToArray();
foreach (var f in files)
{
zip.AddFile(f, GetCleanFolderName(source, f));
}
var destinationFilename = destination;
if (Directory.Exists(destination) && !destination.EndsWith(".zip"))
{
destinationFilename += $"\\{new DirectoryInfo(source).Name}-{DateTime.Now:yyyy-MM-dd-HH-mm-ss-ffffff}.zip";
}
zip.Save(destinationFilename);
}
}
private string GetCleanFolderName(string source, string filepath)
{
if (string.IsNullOrWhiteSpace(filepath))
{
return string.Empty;
}
var result = filepath.Substring(source.Length);
if (result.StartsWith("\\"))
{
result = result.Substring(1);
}
result = result.Substring(0, result.Length - new FileInfo(filepath).Name.Length);
return result;
}
Usage:
Zip(#"c:\somefolder\subfolder\source", #"c:\somefolder2\subfolder2\dest");
Or
Zip(#"c:\somefolder\subfolder\source", #"c:\somefolder2\subfolder2\dest\output.zip");
Following code uses a third-party ZIP component from Rebex:
// add content of the local directory C:\Data\
// to the root directory in the ZIP archive
// (ZIP archive C:\archive.zip doesn't have to exist)
Rebex.IO.Compression.ZipArchive.Add(#"C:\archive.zip", #"C:\Data\*", "");
Or if you want to add more folders without need to open and close archive multiple times:
using Rebex.IO.Compression;
...
// open the ZIP archive from an existing file
ZipArchive zip = new ZipArchive(#"C:\archive.zip", ArchiveOpenMode.OpenOrCreate);
// add first folder
zip.Add(#"c:\first\folder\*","\first\folder");
// add second folder
zip.Add(#"c:\second\folder\*","\second\folder");
// close the archive
zip.Close(ArchiveSaveAction.Auto);
You can download the ZIP component here.
Using a free, LGPL licensed SharpZipLib is a common alternative.
Disclaimer: I work for Rebex
"Where should I copy ICSharpCode.SharpZipLib.dll to see that namespace in Visual Studio?"
You need to add the dll file as a reference in your project. Right click on References in the Solution Explorer->Add Reference->Browse and then select the dll.
Finally you'll need to add it as a using statement in whatever files you want to use it in.
ComponentPro ZIP can help you achieve that task. The following code snippet compress files and dirs in a folder. You can use wilcard mask as well.
using ComponentPro.Compression;
using ComponentPro.IO;
...
// Create a new instance.
Zip zip = new Zip();
// Create a new zip file.
zip.Create("test.zip");
zip.Add(#"D:\Temp\Abc"); // Add entire D:\Temp\Abc folder to the archive.
// Add all files and subdirectories from 'c:\test' to the archive.
zip.AddFiles(#"c:\test");
// Add all files and subdirectories from 'c:\my folder' to the archive.
zip.AddFiles(#"c:\my folder", "");
// Add all files and subdirectories from 'c:\my folder' to '22' folder within the archive.
zip.AddFiles(#"c:\my folder2", "22");
// Add all .dat files from 'c:\my folder' to '22' folder within the archive.
zip.AddFiles(#"c:\my folder2", "22", "*.dat");
// Or simply use this to add all .dat files from 'c:\my folder' to '22' folder within the archive.
zip.AddFiles(#"c:\my folder2\*.dat", "22");
// Add *.dat and *.exe files from 'c:\my folder' to '22' folder within the archive.
zip.AddFiles(#"c:\my folder2\*.dat;*.exe", "22");
TransferOptions opt = new TransferOptions();
// Donot add empty directories.
opt.CreateEmptyDirectories = false;
zip.AddFiles(#"c:\abc", "/", opt);
// Close the zip file.
zip.Close();
http://www.componentpro.com/doc/zip has more examples