C#实现Zip压缩目录中所有文件的方法
本文实例讲述了C#实现Zip压缩目录中所有文件的方法。分享给大家供大家参考。具体实现方法如下：
using System;
using System.IO;
using System.Collections;
using System.IO.Compression;
using System.Collections.Generic;
class FolderZip
{
private const long BUFFER_SIZE = 20480;
static void main(string[] args)
{
string sourcepath=@"C:\tmp";
Queue<FileSystemInfo> Folders = new Queue<FileSystemInfo>(new DirectoryInfo(sourcepath).GetFileSystemInfos());
string copytopath = @"D:\temp";
copytopath = (copytopath.LastIndexOf(Path.DirectorySeparatorChar) == copytopath.Length - 1) ? copytopath : copytopath+Path.DirectorySeparatorChar + Path.GetFileName(sourcepath);
Directory.CreateDirectory(copytopath);
while (Folders.Count > 0)
{
FileSystemInfo atom = Folders.Dequeue();
FileInfo sourcefile = atom as FileInfo;
if (sourcefile == null)
{
DirectoryInfo directory = atom as DirectoryInfo;
Directory.CreateDirectory(directory.FullName.Replace(sourcepath,copytopath));
foreach (FileSystemInfo nextatom in directory.GetFileSystemInfos())
Folders.Enqueue(nextatom);
}
else
{
string sourcefilename = sourcefile.FullName;
string zipfilename = sourcefile.FullName.Replace(sourcepath,copytopath) + ".zip";
if (!File.Exists(zipfilename))
{
FileStream sourceStream = null;
FileStream destinationStream = null;
GZipStream compressedStream = null;
try
{
// Read the bytes from the source file into a byte array
sourceStream = new FileStream(sourcefilename, FileMode.Open, FileAccess.Read, FileShare.Read);
// Open the FileStream to write to
destinationStream = new FileStream(zipfilename, FileMode.OpenOrCreate, FileAccess.Write);
// Create a compression stream pointing to the destiantion stream
compressedStream = new DeflateStream(destinationStream, CompressionMode.Compress, true);
long bufferSize = sourceStream.Length < BUFFER_SIZE ? sourceStream.Length : BUFFER_SIZE;
byte[] buffer = new byte[bufferSize];
int bytesRead = 0;
long bytesWritten = 0;
while ((bytesRead = sourceStream.Read(buffer, 0, buffer.Length)) != 0)
{
compressedStream.Write(buffer, 0, bytesRead);
bytesWritten += bufferSize;
}
}
catch (ApplicationException)
{
continue;
}
finally
{
// Make sure we allways close all streams
if (sourceStream != null) sourceStream.Close();
if (compressedStream != null) compressedStream.Close();
if (destinationStream != null) destinationStream.Close();
}
}
}
}
}
}
希望本文所述对大家的C#程序设计有所帮助。
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