西夏普的部落格

1.前言:
DotNetZip為一個開放式源碼軟體元件，可整合到.NET開發專案中，是一個容易操作使用的檔案壓縮/解壓縮元件。

2.說明:
DotNetZip的最新軟體可由下列網址下載:
http://dotnetzip.codeplex.com/

本範例使用的版本為v1.9.1.8
解壓縮軟體後，將\DotNetZipLib-DevKit-v1.9\zip-v1.9\Release\Ionic.Zlib.dll的DLL檔複製到自己專案下的bin目錄
加入參考: Ionic.Zlib.dll

加入命名空間:

using Ionic.Zlib;

程式碼:

private void btZip_Click(object sender, EventArgs e)
{
	string path = @"d:\tmp\test";//要壓縮檔案的目錄路徑
	ZipFiles(path, string.Empty, string.Empty);
}

private void btUnzip_Click(object sender, EventArgs e)
{
	string path = @"d:\tmp\test1\test.zip";//壓縮檔案路徑
	UnZipFiles(path, string.Empty);
}

//讀取目錄下所有檔案
private static ArrayList GetFiles(string path)
{
	ArrayList files = new ArrayList();

	if (Directory.Exists(path))
	{
		files.AddRange(Directory.GetFiles(path));
	}

	return files;
}

//建立目錄
private static void CreateDirectory(string path)
{
	if (!Directory.Exists(path))
	{
		Directory.CreateDirectory(path);
	}
}

//壓縮檔案
//path: 壓縮檔案路徑
//password: 密碼
//comment: 註解
private void ZipFiles(string path, string password, string comment)
{
	string zipPath = path + @"\" + Path.GetFileName(path) + ".zip";
	ZipFile zip = new ZipFile();
	if (password != null && password != string.Empty) zip.Password = password;
	if (comment != null && comment != "") zip.Comment = comment;
	ArrayList files = GetFiles(path);
	foreach (string f in files)
	{
		zip.AddFile(f, string.Empty);//第二個參數設為空值表示壓縮檔案時不將檔案路徑加入
	}
	zip.Save(zipPath);
}

//解壓縮檔案
//path: 解壓縮檔案目錄路徑
//password: 密碼
private void UnZipFiles(string path, string password)
{
	ZipFile unzip = ZipFile.Read(path);
	if (password != null && password != string.Empty) unzip.Password = password;
	string unZipPath = path.Replace(".zip", "");

	foreach (ZipEntry e in unzip)
	{
		e.Extract(unZipPath, ExtractExistingFileAction.OverwriteSilently);
	}
}