• 創建新的壓縮文件；
• 在壓縮文件中刪除文件；
• 壓縮整個目錄內容或目錄列表；
• 壓縮并替換該文件
• 壓縮并更新文件
• 刪除該壓縮文件
• 不經過壓縮就可以將指定類型的文件直接拷貝到壓縮文件中；

• 解壓文件；
• 指定文件的解壓縮路徑；
• 更新已經成在的文件

• 對跨磁盤的壓縮文件進行讀寫操作；
• 直接在硬盤驅動器中創建多部分的壓縮文件；
• 將多文件存檔轉換為單個壓縮文件；
• 將已存在的壓縮文件轉換為多文件或者多磁盤存檔；
• 對跨磁盤的操作；
• 在寫磁盤前先格式化；

• 從.NET數據流中壓縮及解壓縮數據，或者將數據壓縮及解壓縮到.NET數據流中；
• 壓縮及解壓縮存儲緩沖區；

• 在壓縮文件中獲得詳細的文件列表；
• 使用統配符來指定要處理的文件；
• 確定壓縮文件的名稱和位置；
• 提供數據，例如文件壓縮前的大小，壓縮文件的大小及其它信息；
• 能完全控制壓縮注釋；

• 對每個需要加密的文件指定不同的加密和解密密碼；
• 測試整體性，修復受損的壓縮文件及報告任何能找到的不一致性；
• 確定壓縮文件的日期與最新項相同；

• 設置壓縮等級；
• 為壓縮文件的臨時拷貝提供最大限度的安全性。用戶能夠指定臨時的壓縮文件位置；
• 能取消所有的操作；
• 當文件被壓縮，解壓縮，更新，刪除等操作時，會通知用戶的應用程序；
• 給出文件的進度狀態，這些數據顯示為百分比，字節及文件數；
• 直接使用這些信息，用戶可以很容易更新狀態條；
• 根據文件日期限制文件處理：在用戶指定日期之后，不可以對文件進行修改操作；

Polar Zip for .NET will meet all your compression needs whether you require simple Zip / Unzip functions or advanced features：

1. Zip actions

• Create a new zip file;
• Delete files in a zip file;
• Compress entire directories and their contents or a list of directories;
• Compress only files newer than those already in the zip file (Refresh);
• Compress files and add them to a zip file (Update);
• Delete files after zipping them (Move);
• Have specified types of files directly copied into a zip file without compression;

2. UnZIP Actions

• Decompress files from a zip file;
• Specify the directory where files will be decompressed to;
• Only decompress files that are newer than the ones already existing on disk (Refresh);

3. Multi-disk and multi-file archives

• Reads and writes zip files that span multiple disks;
• Creates multi-part zip files directly to a hard drive;
• Converts multi-file archives to one single zip file;
• Converts an existing zip file to a multi-file or a multi-disk archive;
• Events during disk spanning;
• Formats disks before writing on them;

4. Streaming and memory compression

• Compressing and decompressing data into and from any .NET stream;
• Compressing and decompressing memory buffers;

5. General zip information

• Obtain a detailed list of files in a zip file;
• Use wildcards to specify the files to be processed;
• Specify the name and location of a zip file;
• Events provide data such as the file size before compression, the compressed file size and other information as it becomes available;
• You have full control over zip comments;

6. Tools

• Specify different encryption and decryption passwords for each file if needed;
• Tests the integrity, repairs corrupted zip files and reports any inconsistencies found;
• Make the zip file date the same as the newest item;

7. General process information

• Set the compression level;
• Work on temporary copies of zip files for maximum safety. You can specify the location of the temporary zip file;
• All operations can be aborted;
• Notifies your application whenever a file is being zipped, unzipped, updated, deleted, etc.;
• Provides the status of the progress by file and globally with the data shown as percentages, bytes and file counts;
• You can easily update your progress bars directly with this information;
• Limits file processing based on file dates: does not operate on files modified after/on the date you specify;