'Declaration
 
Public Overloads Shared Sub Unzip( _
   ByVal zipFileName As String, _
   ByVal destinationFolder As String, _
   ByVal decryptionPassword As String, _
   ByVal replaceExistingFiles As Boolean, _
   ByVal recursive As Boolean, _
   ByVal preservePaths As Boolean, _
   ByVal diskRequiredCallback As QuickZip.DiskRequiredCallback, _
   ByVal byteProgressionCallback As QuickZip.ByteProgressionCallback, _
   ByVal itemProgressionCallback As QuickZip.ItemProgressionCallback, _
   ByVal userParams As Object, _
   ByVal ParamArray filesToUnzip() As String _
) 

'Usage
 
Dim zipFileName As String
Dim destinationFolder As String
Dim decryptionPassword As String
Dim replaceExistingFiles As Boolean
Dim recursive As Boolean
Dim preservePaths As Boolean
Dim diskRequiredCallback As QuickZip.DiskRequiredCallback
Dim byteProgressionCallback As QuickZip.ByteProgressionCallback
Dim itemProgressionCallback As QuickZip.ItemProgressionCallback
Dim userParams As Object
Dim filesToUnzip() As String
 
QuickZip.Unzip(zipFileName, destinationFolder, decryptionPassword, replaceExistingFiles, recursive, preservePaths, diskRequiredCallback, byteProgressionCallback, itemProgressionCallback, userParams, filesToUnzip)

public static void Unzip( 
   string zipFileName,
   string destinationFolder,
   string decryptionPassword,
   bool replaceExistingFiles,
   bool recursive,
   bool preservePaths,
   QuickZip.DiskRequiredCallback diskRequiredCallback,
   QuickZip.ByteProgressionCallback byteProgressionCallback,
   QuickZip.ItemProgressionCallback itemProgressionCallback,
   object userParams,
   params string[] filesToUnzip
)

Parameters

zipFileName

The fully-qualified path and name of the zip file.

destinationFolder

The destination folder to where the files will be extracted.

decryptionPassword

The password that will be used to decrypt the files.

replaceExistingFiles

Boolean value indicating if existing files should be overwritten.

recursive

Boolean value indicating if files contained within sub-folders should be extracted from the zip file.

preservePaths

Boolean value indicating if the directory structure should be preserved in the destination folder.

diskRequiredCallback

The callback method called whenever the DiskRequired event is triggered.

byteProgressionCallback

Delegate for ByteProgression notification.

itemProgressionCallback

Delegate for ItemProgression notification.

userParams

Opaque data that will be passed back to the event handler when an event is raised.

filesToUnzip

The files to extract from zipFileName. Cannot be a null reference (Nothing in Visual Basic).

Note that existing files will be overwritten, files contained within sub-folders will be extracted and the directory structure will be restored in the destination folder.

Zip files are case sensitive therefore the string passed in the filesToUnzip parameter, will be used "as-is".

For example, if a zip file contains a file named "FILE.TXT" and "file.txt" is passed to the filesToUnzip parameter, "FILE.TXT" will not be extracted.

If the destination item(s) exists, the attributes and dates of the original item(s) are not applied to the destination item(s).

Handling paths

If the preservePaths parameter of the Unzip method is set to false, the files specified in the filesToUnzip parameter will be restored directly into the root of the destination folder without recreating the directory structure.

For example, if you have a zip file containing files in the "folder1" subfolder and files in the "folder1\folder2" subfolder, the following code will unzip all files right into "c:\temp", without creating any subfolders:

C#	Copy Code
Xceed.Zip.QuickZip.Unzip( @"c:\test.zip", @"c:\temp", true, true, false, @"folder1\*" );

If the preservePaths parameter is set to true, the part of the path that is explicitly included in the filesToUnzip parameter will not be restored into the destination folder.

For example, for the same zip file as above, the following code will create the folder "folder2" into the "c:\temp" destination folder. Files that were in the "folder1" subfolder in the zip will be unzipped directly into the root of "c:\temp", and files that were in "folder1\folder2" will be unzipped into "c:\temp\folder2":

C#	Copy Code
Xceed.Zip.QuickZip.Unzip( @"c:\test.zip", @"c:\temp", true, true, true, @"folder1\*" );

The following example will unzip files into "c:\temp\folder1" and "c:\temp\folder1\folder2":

C#	Copy Code
Xceed.Zip.QuickZip.Unzip( @"c:\test.zip", @"c:\temp", true, true, true, @"*" );

Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

Reference

QuickZip Class
QuickZip Members
Overload List