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