.net操作压缩文件

附件：SharpZipLib.zip

public class UnZipClass//解压
{
/// <summary>
/// 解压功能(解压压缩文件到指定目录)
/// </summary>
/// <param name="FileToUpZip">待解压的文件</param>
/// <param name="ZipedFolder">指定解压目标目录</param>
public static void UnZip(string FileToUpZip, string ZipedFolder, string Password)
{
if (!File.Exists(FileToUpZip))
{
MessageBox.Show("不存在压缩包");
return;
}

if (!Directory.Exists(ZipedFolder))
{
Directory.CreateDirectory(ZipedFolder);
}

ZipInputStream s = null;
ZipEntry theEntry = null;

string fileName;
FileStream streamWriter = null;
try
{
s = new ZipInputStream(File.OpenRead(FileToUpZip));
s.Password = Password;
while ((theEntry = s.GetNextEntry()) != null)
{
if (theEntry.Name != String.Empty)
{
fileName = Path.Combine(ZipedFolder, theEntry.Name);
///判断文件路径是否是文件夹
if (fileName.EndsWith("/") || fileName.EndsWith("\"))
{
Directory.CreateDirectory(fileName);
continue;
}

streamWriter = File.Create(fileName);
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;
}
}
}
}
}
catch
{
MessageBox.Show("不能读取压缩包,请尝试输入口令", "操作提示", MessageBoxButtons.OK, MessageBoxIcon.Warning);
return;
}
finally
{
if (streamWriter != null)
{
streamWriter.Close();
streamWriter = null;
}
if (theEntry != null)
{
theEntry = null;
}
if (s != null)
{
s.Close();
s = null;
}
GC.Collect();
GC.Collect(1);
}
}
}

/// <summary>
/// 压缩文件
/// </summary>
public class ZipHelper
{
#region 压缩

/// <summary>
/// 递归压缩文件夹的内部方法
/// </summary>
/// <param name="folderToZip">要压缩的文件夹路径</param>
/// <param name="zipStream">压缩输出流</param>
/// <param name="parentFolderName">此文件夹的上级文件夹</param>
/// <returns></returns>
private static bool ZipDirectory(string folderToZip, ZipOutputStream zipStream, string parentFolderName)
{
bool result = true;
string[] folders, files;
ZipEntry ent = null;
FileStream fs = null;
Crc32 crc = new Crc32();

try
{
ent = new ZipEntry(Path.Combine(parentFolderName, Path.GetFileName(folderToZip) + "/"));
zipStream.PutNextEntry(ent);
zipStream.Flush();

files = Directory.GetFiles(folderToZip);
foreach (string file in files)
{
fs = File.OpenRead(file);

byte[] buffer = new byte[fs.Length];
fs.Read(buffer, 0, buffer.Length);
ent = new ZipEntry(Path.Combine(parentFolderName, Path.GetFileName(folderToZip) + "/" + Path.GetFileName(file)));
ent.DateTime = DateTime.Now;
ent.Size = fs.Length;

fs.Close();

crc.Reset();
crc.Update(buffer);

ent.Crc = crc.Value;
zipStream.PutNextEntry(ent);
zipStream.Write(buffer, 0, buffer.Length);
}

}
catch
{
result = false;
}
finally
{
if (fs != null)
{
fs.Close();
fs.Dispose();
}
if (ent != null)
{
ent = null;
}
GC.Collect();
GC.Collect(1);
}

folders = Directory.GetDirectories(folderToZip);
foreach (string folder in folders)
if (!ZipDirectory(folder, zipStream, folderToZip))
return false;

return result;
}

/// <summary>
/// 压缩文件夹
/// </summary>
/// <param name="folderToZip">要压缩的文件夹路径</param>
/// <param name="zipedFile">压缩文件完整路径</param>
/// <param name="password">密码</param>
/// <returns>是否压缩成功</returns>
public static bool ZipDirectory(string folderToZip, string zipedFile, string password)
{
bool result = false;
if (!Directory.Exists(folderToZip))
return result;

ZipOutputStream zipStream = new ZipOutputStream(File.Create(zipedFile));
zipStream.SetLevel(6);
if (!string.IsNullOrEmpty(password)) zipStream.Password = password;

result = ZipDirectory(folderToZip, zipStream, "");

zipStream.Finish();
zipStream.Close();

return result;
}

/// <summary>
/// 压缩文件夹
/// </summary>
/// <param name="folderToZip">要压缩的文件夹路径</param>
/// <param name="zipedFile">压缩文件完整路径</param>
/// <returns>是否压缩成功</returns>
public static bool ZipDirectory(string folderToZip, string zipedFile)
{
bool result = ZipDirectory(folderToZip, zipedFile, null);
return result;
}

/// <summary>
/// 压缩文件
/// </summary>
/// <param name="fileToZip">要压缩的文件全名</param>
/// <param name="zipedFile">压缩后的文件名</param>
/// <param name="password">密码</param>
/// <returns>压缩结果</returns>
public static bool ZipFile(string fileToZip, string zipedFile, string password)
{
bool result = true;
ZipOutputStream zipStream = null;
FileStream fs = null;
ZipEntry ent = null;

if (!File.Exists(fileToZip))
return false;

try
{
fs = File.OpenRead(fileToZip);
byte[] buffer = new byte[fs.Length];
fs.Read(buffer, 0, buffer.Length);
fs.Close();

fs = File.Create(zipedFile);
zipStream = new ZipOutputStream(fs);
if (!string.IsNullOrEmpty(password)) zipStream.Password = password;
ent = new ZipEntry(Path.GetFileName(fileToZip));
zipStream.PutNextEntry(ent);
zipStream.SetLevel(6);

zipStream.Write(buffer, 0, buffer.Length);

}
catch
{
result = false;
}
finally
{
if (zipStream != null)
{
zipStream.Finish();
zipStream.Close();
}
if (ent != null)
{
ent = null;
}
if (fs != null)
{
fs.Close();
fs.Dispose();
}
}
GC.Collect();
GC.Collect(1);

return result;
}

/// <summary>
/// 压缩文件
/// </summary>
/// <param name="fileToZip">要压缩的文件全名</param>
/// <param name="zipedFile">压缩后的文件名</param>
/// <returns>压缩结果</returns>
public static bool ZipFile(string fileToZip, string zipedFile)
{
bool result = ZipFile(fileToZip, zipedFile, null);
return result;
}

/// <summary>
/// 压缩文件或文件夹
/// </summary>
/// <param name="fileToZip">要压缩的路径</param>
/// <param name="zipedFile">压缩后的文件名</param>
/// <param name="password">密码</param>
/// <returns>压缩结果</returns>
public static bool Zip(string fileToZip, string zipedFile, string password)
{
bool result = false;
if (Directory.Exists(fileToZip))
result = ZipDirectory(fileToZip, zipedFile, password);
else if (File.Exists(fileToZip))
result = ZipFile(fileToZip, zipedFile, password);

return result;
}

/// <summary>
/// 压缩文件或文件夹
/// </summary>
/// <param name="fileToZip">要压缩的路径</param>
/// <param name="zipedFile">压缩后的文件名</param>
/// <returns>压缩结果</returns>
public static bool Zip(string fileToZip, string zipedFile)
{
bool result = Zip(fileToZip, zipedFile, null);
return result;

}

}