[C#] SharpZipLib을 사용한 복수 개의 파일 압축 및 해제

// 압축
void Compression()
{
try
{
string zipPath = "test.zip";
System.IO.FileStream writer = new System.IO.FileStream( zipPath,
System.IO.FileMode.Create,
System.IO.FileAccess.Write, System.IO.FileShare.Write);

ICSharpCode.SharpZipLib.Zip.ZipOutputStream zos =
new ICSharpCode.SharpZipLib.Zip.ZipOutputStream(writer);

foreach (string file in DiffFiles)
{
int Substringindex = textBox2.Text.Length;
string f = file.Substring(Substringindex + 1);

ICSharpCode.SharpZipLib.Zip.ZipEntry ze =
new ICSharpCode.SharpZipLib.Zip.ZipEntry(f);

System.IO.FileStream fs = new System.IO.FileStream( file,
System.IO.FileMode.Open, System.IO.FileAccess.Read,
System.IO.FileShare.Read);

byte[] buffer = new byte[fs.Length];
fs.Read(buffer, 0, buffer.Length);
fs.Close();

ze.Size = buffer.Length;

ze.DateTime = DateTime.Now;

// 새로운 엔트리(파일)을 넣는다.
zos.PutNextEntry(ze);

// 쓰기
zos.Write(buffer, 0, buffer.Length);
}

zos.Close();
writer.Close();
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
}
}

// 해제
void DeCompression(string filename)
{
string zipPath = filename;
string extractDir = Environment.CurrentDirectory;

System.IO.FileStream fs = new System.IO.FileStream( zipPath,
System.IO.FileMode.Open,
System.IO.FileAccess.Read, System.IO.FileShare.Read);

ICSharpCode.SharpZipLib.Zip.ZipInputStream zis =
new ICSharpCode.SharpZipLib.Zip.ZipInputStream(fs);

ICSharpCode.SharpZipLib.Zip.ZipEntry ze;

while ((ze = zis.GetNextEntry()) != null)
{
if (!ze.IsDirectory)
{
string fileName = System.IO.Path.GetFileName(ze.Name);

string destDir = System.IO.Path.Combine(extractDir,
System.IO.Path.GetDirectoryName(ze.Name));

if (false == Directory.Exists(destDir))
{
System.IO.Directory.CreateDirectory(destDir);
}

string destPath = System.IO.Path.Combine(destDir, fileName);

System.IO.FileStream writer = new System.IO.FileStream(
destPath, System.IO.FileMode.Create,
System.IO.FileAccess.Write,
System.IO.FileShare.Write);

byte[] buffer = new byte[2048];
int len;
while ((len = zis.Read(buffer, 0, buffer.Length)) > 0)
{
writer.Write(buffer, 0, len);
}

writer.Close();
}
}

zis.Close();
fs.Close();
}