zip (ICSharpCode.SharpZipLib.dll文件需要下载)

ZipClass zc=new ZipClass ();
zc.ZipDir(@"E:1新建文件夹", @"E:1新建文件夹.zip", 1);//压缩
zc.UnZip(@"E:1新建文件夹.zip",@"E:12222");//解压

　　cs

class ZipClass
{
public void UnZip(string zipFilePath, string unZipDir)
{
if (zipFilePath == string.Empty)
{
throw new Exception("压缩文件不能为空！");
}
if (!File.Exists(zipFilePath))
{
throw new System.IO.FileNotFoundException("压缩文件不存在！");
}
//解压文件夹为空时默认与压缩文件同一级目录下，跟压缩文件同名的文件夹 
if (unZipDir == string.Empty)
unZipDir = zipFilePath.Replace(Path.GetFileName(zipFilePath), Path.GetFileNameWithoutExtension(zipFilePath));
if (!unZipDir.EndsWith("//"))
unZipDir += "//";
if (!Directory.Exists(unZipDir))
Directory.CreateDirectory(unZipDir);

using (ZipInputStream s = new ZipInputStream(File.OpenRead(zipFilePath)))
{

ZipEntry theEntry;
while ((theEntry = s.GetNextEntry()) != null)
{
string directoryName = Path.GetDirectoryName(theEntry.Name);
string fileName = Path.GetFileName(theEntry.Name);
if (directoryName.Length > 0)
{
Directory.CreateDirectory(unZipDir + directoryName);
}
if (!directoryName.EndsWith("//"))
directoryName += "//";
if (fileName != String.Empty)
{
using (FileStream streamWriter = File.Create(unZipDir + theEntry.Name))
{

int size = 2048;
byte[] data = new byte[2048];
while (true)
{
size = s.Read(data, 0, data.Length);
if (size > 0)
{
streamWriter.Write(data, 0, size);
}
else
{
break;
}
}
}
}
}
}
}

 

public static void ZipDir(string sDir, string sZip, ZipOutputStream s)
{
string[] filenames = Directory.GetFiles(sDir);
string[] dirnames = Directory.GetDirectories(sDir);
Crc32 crc = new Crc32();
if (s == null)
{
s = new ZipOutputStream(File.Create(sZip));
s.SetLevel(6); // 0 - store only to 9 - means best compression
}


foreach (string file in filenames)
fileZipInStream(file, s);

foreach (string dir in dirnames)
ZipDir(dir, "", s);
if (sZip != "")
{
s.Finish();
s.Close();

FileInfo fInfo = new FileInfo(sZip);
long size = fInfo.Length;
//Log.WriteLogD("----------------" + size.ToString());
if (size < 100) 
File.Delete(sZip);
}
}

}

ICSharpCode.SharpZipLib.dll下载地址：http://i.cnblogs.com/Files.aspx

感谢提供此类的朋友