这篇文章主要介绍了C#实现Zip压缩目录中所有文件的方法,涉及C#针对文件的读写与zip压缩相关技巧,具有一定参考借鉴价值,需要的朋友可以参考下
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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