I was excited that the base class library in .NET 4.5 now includes native support for working with Zip files, but in my excitement I overlooked System.IO.Compression.FileSystem. The name of the assembly is actually misleading, because the namespace is still just System.IO.Compression, and it only contains one type and that's ZipFile. This is a separate assembly from System.IO.Compression.dll so you will need to add it as an additional reference.
The ZipFile class is actually static, but it contains some four methods for quickly creating and reading zip files.
ZipFile.CreateFromDirectory(String, String) ZipFile.ExtractToDirectory(String, String) ZipFile.Open(String, ZipArchiveMode) ZipFile.OpenRead(String)
ZipFile.CreateFromDirectory(String, String) is useful for quickly archiving entire directories. I could backup my documents for instance.
ZipFile.CreateFromDirectory(@"c:\users\danderson\documents", @"c:\users\danderson\documents\backup.zip");
I could do the reverse to restore my documents.
ZipFile.ExtractToDirectory(@"c:\users\danderson\documents\backup.zip", @"c:\users\danderson\documents");
There are some limitations however. One is that these methods will throw exceptions if the target path already exists when creating an archive, or a target directory exists when extracting files. If an exception is thrown, it will remain partially extracted however many files and folders were previously successful.
Related Posts
Multiple ASP.NET apps under the same host and port in Visual Studio with IIS Express and Webpack Dev Server Proxy- ViewModel constructors and inheritance by extending kendo.data.ObservableObject
Exploring Active Record as a base for business entities in a business logic layer with Entity Framework- Using your own database schema and classes with ASP.NET Core Identity and Entity Framework Core
- Using DataTestMethod and DataRow to pass parameters to a unit test and prevent duplicating test methods
- Building SSDT SSRS projects (.rptproj) with a build server (TeamCity)
5 Comments
Leave a Comment
You must be logged in to post a comment.
Getting same error Exception calling “ExtractToDirectory” with “2” argument(s): “Number of entries expected in End Of Central Directory does not correspond to number of entries in Central Directory.” I am trying to unzip 30 gb file
Please help
Pingback: [RESOLVED]Namespace name 'ZipArchive' could not be found | ASP.NET MVC
Pingback: [RESOLVED]Namespace name 'ZipArchive' could not be found | ASP Web Form Data Control
Pingback: [RESOLVED]Namespace name 'ZipArchive' could not be found | ASP Questions & Answers
hi,
I am unziping a Zip file of size 4.8Gb and i get an error
System.IO.InvalidDataException: Number of entries expected in End Of Central Directory does not correspond to number of entries in Central Directory.
at System.IO.Compression.ZipArchive.ReadCentralDirectory()
at System.IO.Compression.ZipArchive.get_Entries()
at System.IO.Compression.ZipFileExtensions.ExtractToDirectory(ZipArchive sour
ce, String destinationDirectoryName)
at System.IO.Compression.ZipFile.ExtractToDirectory(String sourceArchiveFileN
ame, String destinationDirectoryName, Encoding entryNameEncoding)
at System.IO.Compression.ZipFile.ExtractToDirectory(String sourceArchiveFileN
ame, String destinationDirectoryName)
at ConsoleApplication1.Program.ExtractZipFileContents(String zipPath, String
extractPath) in
if you need I can share the code too for your simualtion.
Let me know if there is any hot fix