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。