C# Class System.IO.Compression.ZipStorer

Unique class for compression/decompression file. Represents a Zip file.

Inheritance: IDisposable

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Public Properties

Property	Type	Description
EncodeUTF8	bool
ForceDeflating	bool

Public Methods

Method	Description
AddFile ( Compression _method, string _pathname, string _filenameInZip, string _comment, ushort access = 0x8100 ) : void	Add full contents of a file into the Zip storage
AddStream ( Compression _method, string _filenameInZip, System.Stream _source, System.DateTime _modTime, string _comment, ushort access = 0x8100 ) : void	Add full contents of a stream into the Zip storage
Close ( ) : void	Updates central directory (if pertinent) and close the Zip storage This is a required step, unless automatic dispose is used
Create ( System.Stream _stream, string _comment ) : ZipStorer	Method to create a new zip storage in a stream
Create ( string _filename, string _comment ) : ZipStorer	Method to create a new storage file
Dispose ( ) : void	Closes the Zip file stream
ExtractFile ( ZipFileEntry _zfe, System.Stream _stream ) : bool	Copy the contents of a stored file into an opened stream Unique compression methods are Store and Deflate
ExtractFile ( ZipFileEntry _zfe, string _filename ) : bool	Copy the contents of a stored file into a physical file Unique compression methods are Store and Deflate
Open ( System.Stream _stream, FileAccess _access ) : ZipStorer	Method to open an existing storage from stream
Open ( string _filename, FileAccess _access ) : ZipStorer	Method to open an existing storage file
ReadCentralDir ( ) : List	Read all the file records in the central directory
RemoveEntries ( ZipStorer &_zip, List _zfes ) : bool	Removes one of many files in storage. It creates a new Zip file. This method only works for storage of type FileStream

Private Methods

Method	Description
DateTimeToDosTime ( System.DateTime _dt ) : uint
DosTimeToDateTime ( uint _dt ) : System.DateTime
GetFileOffset ( uint _headerOffset ) : uint
NormalizedFilename ( string _filename ) : string
ReadFileInfo ( ) : bool
Store ( ZipFileEntry &_zfe, System.Stream _source ) : void
UpdateCrcAndSizes ( ZipFileEntry &_zfe ) : void
WriteCentralDirRecord ( ZipFileEntry _zfe ) : void
WriteEndRecord ( uint _size, uint _offset ) : void
WriteLocalHeader ( ZipFileEntry &_zfe ) : void
ZipStorer ( ) : System.Collections.Generic

Method Details

AddFile() public method

Add full contents of a file into the Zip storage

public AddFile ( Compression _method, string _pathname, string _filenameInZip, string _comment, ushort access = 0x8100 ) : void
_method	Compression	Compression method
_pathname	string	Full path of file to add to Zip storage
_filenameInZip	string	Filename and path as desired in Zip directory
_comment	string	Comment for stored file
access	ushort
return	void

AddStream() public method

Add full contents of a stream into the Zip storage

public AddStream ( Compression _method, string _filenameInZip, System.Stream _source, System.DateTime _modTime, string _comment, ushort access = 0x8100 ) : void
_method	Compression	Compression method
_filenameInZip	string	Filename and path as desired in Zip directory
_source	System.Stream	Stream object containing the data to store in Zip
_modTime	System.DateTime	Modification time of the data to store
_comment	string	Comment for stored file
access	ushort
return	void

Close() public method

Updates central directory (if pertinent) and close the Zip storage

This is a required step, unless automatic dispose is used

public Close ( ) : void
return	void

Create() public static method

Method to create a new zip storage in a stream

public static Create ( System.Stream _stream, string _comment ) : ZipStorer
_stream	System.Stream
_comment	string
return	ZipStorer

Create() public static method

Method to create a new storage file

public static Create ( string _filename, string _comment ) : ZipStorer
_filename	string	Full path of Zip file to create
_comment	string	General comment for Zip file
return	ZipStorer

Dispose() public method

Closes the Zip file stream

public Dispose ( ) : void
return	void

ExtractFile() public method

Copy the contents of a stored file into an opened stream

Unique compression methods are Store and Deflate

public ExtractFile ( ZipFileEntry _zfe, System.Stream _stream ) : bool
_zfe	ZipFileEntry	Entry information of file to extract
_stream	System.Stream	Stream to store the uncompressed data
return	bool

ExtractFile() public method

Copy the contents of a stored file into a physical file

Unique compression methods are Store and Deflate

public ExtractFile ( ZipFileEntry _zfe, string _filename ) : bool
_zfe	ZipFileEntry	Entry information of file to extract
_filename	string	Name of file to store uncompressed data
return	bool

Open() public static method

Method to open an existing storage from stream

public static Open ( System.Stream _stream, FileAccess _access ) : ZipStorer
_stream	System.Stream	Already opened stream with zip contents
_access	FileAccess	File access mode for stream operations
return	ZipStorer

Open() public static method

Method to open an existing storage file

public static Open ( string _filename, FileAccess _access ) : ZipStorer
_filename	string	Full path of Zip file to open
_access	FileAccess	File access mode as used in FileStream constructor
return	ZipStorer

ReadCentralDir() public method

Read all the file records in the central directory

public ReadCentralDir ( ) : List
return	List

RemoveEntries() public static method

Removes one of many files in storage. It creates a new Zip file.

This method only works for storage of type FileStream

public static RemoveEntries ( ZipStorer &_zip, List _zfes ) : bool
_zip	ZipStorer	Reference to the current Zip object
_zfes	List	List of Entries to remove from storage
return	bool

Property Details

EncodeUTF8 public_oe property

True if UTF8 encoding for filename and comments, false if default (CP 437)

public bool EncodeUTF8
return	bool

ForceDeflating public_oe property

Force deflate algotithm even if it inflates the stored file. Off by default.

public bool ForceDeflating
return	bool