using?System;
using?System.IO;
using?System.IO.Compression;
using?System.Windows.Forms;
class?clsZip
{
????public?void?CompressFile（string?sourceFile?string?destinationFile）
????{
????????//?make?sure?the?source?file?is?there
????????if?（File.Exists（sourceFile）?==?false）
????????????throw?new?FileNotFoundException（）;

????????//?Create?the?streams?and?byte?arrays?needed
????????byte[]?buffer?=?null;
????????FileStream?sourceStream?=?null;
????????FileStream?destinationStream?=?null;
????????GZipStream?compressedStream?=?null;

????????try
????????{
????????????//?Read?the?bytes?from?the?source?file?into?a?byte?array
????????????sourceStream?=?new?FileStream（sourceFile?FileMode.Open?FileAccess.Read?FileShare.Read）;

????????????//?Read?the?source?stream?values?into?the?buffer
????????????buffer?=?new?byte[sourceStream.Length];
????????????int?checkCounter?=?sourceStream.Read（buffer?0?buffer.Length）;

????????????if?（checkCounter?!=?buffer.Length）
????????????{
????????????????throw?new?ApplicationException（）;
????????????}

????????????//?Open?the?FileStream?to?write?to
????????????destinationStream?=?new?FileStream（destinationFile?FileMode.OpenOrCreate?FileAccess.Write）;

????????????//?Create?a?compression?stream?pointing?to?the?destiantion?stream
????????????compressedStream?=?new?GZipStream（destinationStream?CompressionMode.Compress?true）;

????????????//?Now?write?the?compressed?data?to?the?destination?file
????????????compressedStream.Write（buffer?0?buffer.Length）;
????????}
????????catch?（ApplicationException?ex）
????????{
????????????MessageBox.Show（ex.Message?“壓縮文件時發生錯誤：“?MessageBoxButtons.OK?MessageBoxIcon.Error）;
????????}
????????finally
????????{
????????????//?Make?sure?we?allways?close?all?streams
????????????if?（sourceStream?!=?null）
????????????????sourceStream.Close（）;

????????????if?（compressedStream?!=?null）
????????????????compressedStream.Close（）;

????????????if?（destinationStream?!=?null）
????????????????destinationStream.Close（）;
????????}
????}

????public?void?DecompressFile（string?sourceFile?string?destinationFile）
????{
????????//?make?sure?the?source?file?is?there
????????if?（File.Exists（sourceFile）?==?false）
????????????throw?new?FileNotFoundException（）;

????????//?Create?the?streams?and?byte?arrays?needed
????????FileStream?sourceStream?=?null;
????????FileStream?destinationStream?=?null;
????????GZipStream?decompressedStream?=?null;
????????byte[]?quartetBuffer?=?null;

????????try
????????{
????????????//?Read?in?the?compressed?source?stream
????????????sourceStream?=?new?FileStream（sourceFile?FileMode.Open）;

????????????//?Create?a?compression?stream?pointing?to?the?destiantion?stream
????????????decompressedStream?=?new?GZipStream（sourceStream?CompressionMode.Decompress?true）;

????????????//?Read?the?footer?to?determine?the?length?of?the?destiantion?file
????????????quartetBuffer?=?new?byte[4];
????????????int

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????文件??????????62??2018-03-27?17:42??博客地址.txt
?????文件??????178176??2015-12-11?21:19??說明.doc
?????目錄???????????0??2018-03-27?17:40??軟件授權\
?????目錄???????????0??2018-03-27?17:40??軟件授權\許可安裝\
?????文件????????2385??2015-12-11?20:54??軟件授權\許可安裝\Form1.Designer.cs
?????文件?????????987??2015-12-11?20:54??軟件授權\許可安裝\Form1.cs
?????文件????????6025??2015-12-11?20:54??軟件授權\許可安裝\Form1.resx
?????文件?????????473??2015-12-11?20:30??軟件授權\許可安裝\Program.cs
?????目錄???????????0??2015-12-11?20:30??軟件授權\許可安裝\Properties\
?????文件????????1366??2015-12-11?20:30??軟件授權\許可安裝\Properties\AssemblyInfo.cs
?????文件????????2876??2015-12-11?20:30??軟件授權\許可安裝\Properties\Resources.Designer.cs
?????文件????????5612??2015-12-11?20:30??軟件授權\許可安裝\Properties\Resources.resx
?????文件????????1099??2015-12-11?20:30??軟件授權\許可安裝\Properties\Settings.Designer.cs
?????文件?????????249??2015-12-11?20:30??軟件授權\許可安裝\Properties\Settings.settings
?????目錄???????????0??2015-12-11?20:30??軟件授權\許可安裝\bin\
?????目錄???????????0??2015-12-11?21:08??軟件授權\許可安裝\bin\Debug\
?????文件???????10240??2015-12-11?21:08??軟件授權\許可安裝\bin\Debug\許可安裝.exe
?????文件???????24064??2015-12-11?21:08??軟件授權\許可安裝\bin\Debug\許可安裝.pdb
?????文件???????21656??2015-12-11?21:03??軟件授權\許可安裝\bin\Debug\許可安裝.vshost.exe
?????文件?????????490??2013-03-18?17:00??軟件授權\許可安裝\bin\Debug\許可安裝.vshost.exe.manifest
?????文件????????4597??2015-12-11?20:53??軟件授權\許可安裝\clsZip.cs
?????目錄???????????0??2015-12-11?20:30??軟件授權\許可安裝\obj\
?????目錄???????????0??2015-12-11?21:08??軟件授權\許可安裝\obj\Debug\
?????文件????????6106??2015-12-11?20:53??軟件授權\許可安裝\obj\Debug\DesignTimeResolveAssemblyReferencesInput.cache
?????目錄???????????0??2018-03-27?17:43??軟件授權\許可安裝\obj\Debug\TempPE\
?????文件?????????180??2015-12-11?21:08??軟件授權\許可安裝\obj\Debug\許可安裝.Form1.resources
?????文件?????????180??2015-12-11?21:08??軟件授權\許可安裝\obj\Debug\許可安裝.Properties.Resources.resources
?????文件?????????709??2015-12-11?21:08??軟件授權\許可安裝\obj\Debug\許可安裝.csproj.FileListAbsolute.txt
?????文件?????????847??2015-12-11?21:08??軟件授權\許可安裝\obj\Debug\許可安裝.csproj.GenerateResource.Cache
?????文件???????10240??2015-12-11?21:08??軟件授權\許可安裝\obj\Debug\許可安裝.exe
?????文件???????24064??2015-12-11?21:08??軟件授權\許可安裝\obj\Debug\許可安裝.pdb
............此處省略104個文件信息