asp.net 对 文件进行压缩 or 解压（zip）
/// <summary>
/// 对文件进行（压缩，解压）
/// </summary>
public static class ZIP
{
/// <summary>压缩文件</summary>
/// <param name="filename">filename生成的文件的名称，如：C\123\123.zip</param>
/// <param name="directory">directory要压缩的文件夹路径</param>
/// <returns></returns>
public static bool PackFiles(string filename, string directory)
{
try
{
directory = directory.Replace("/", "\\");
if (!directory.EndsWith("\\"))
directory += "\\";
if (!Directory.Exists(directory))
{
Directory.CreateDirectory(directory);
}
if (File.Exists(filename))
{
File.Delete(filename);
}
//ICSharpCode.SharpZipLib.Zip.ZipFile pp = new ZipFile();
//FastZip fz = new FastZip();
//fz.CreateEmptyDirectories = true;
//fz.CreateZip(filename, directory, true, "");
return true;
}
catch (Exception)
{
return false;
}
}
/// <summary>解压文件</summary>
/// <param name="file">压缩文件的名称，如：C:\123\123.zip</param>
/// <param name="dir">dir要解压的文件夹路径</param>
/// <returns></returns>
public static bool UnpackFiles(string file, string dir)
{
try
{
if (!File.Exists(file))
return false;
dir = dir.Replace("/", "\\");
if (!dir.EndsWith("\\"))
dir += "\\";
if (!Directory.Exists(dir))
Directory.CreateDirectory(dir);
ZipInputStream s = new ZipInputStream(File.OpenRead(file));
ZipEntry theEntry;
while ((theEntry = s.GetNextEntry()) != null)
{
string directoryName = Path.GetDirectoryName(theEntry.Name);
string fileName = Path.GetFileName(theEntry.Name);
if (directoryName != String.Empty)
Directory.CreateDirectory(dir + directoryName);
if (fileName != String.Empty)
{
FileStream streamWriter = File.Create(dir + 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
{
