彩票走势图

• 创建新的压缩文件；
• 在压缩文件中删除文件；
• 压缩整个目录内容或目录列表；
• 压缩并替换该文件
• 压缩并更新文件
• 删除该压缩文件
• 不经过压缩就可以将指定类型的文件直接拷贝到压缩文件中；

• 解压文件；
• 指定文件的解压缩路径；
• 更新已经成在的文件

• 对跨磁盘的压缩文件进行读写操作；
• 直接在硬盘驱动器中创建多部分的压缩文件；
• 将多文件存档转换为单个压缩文件；
• 将已存在的压缩文件转换为多文件或者多磁盘存档；
• 对跨磁盘的操作；
• 在写磁盘前先格式化；

• 从.NET数据流中压缩及解压缩数据，或者将数据压缩及解压缩到.NET数据流中；
• 压缩及解压缩存储缓冲区；

• 在压缩文件中获得详细的文件列表；
• 使用统配符来指定要处理的文件；
• 确定压缩文件的名称和位置；
• 提供数据，例如文件压缩前的大小，压缩文件的大小及其它信息；
• 能完全控制压缩注释；

• 对每个需要加密的文件指定不同的加密和解密密码；
• 测试整体性，修复受损的压缩文件及报告任何能找到的不一致性；
• 确定压缩文件的日期与最新项相同；

• 设置压缩等级；
• 为压缩文件的临时拷贝提供最大限度的安全性。用户能够指定临时的压缩文件位置；
• 能取消所有的操作；
• 当文件被压缩，解压缩，更新，删除等操作时，会通知用户的应用程序；
• 给出文件的进度状态，这些数据显示为百分比，字节及文件数；
• 直接使用这些信息，用户可以很容易更新状态条；
• 根据文件日期限制文件处理：在用户指定日期之后，不可以对文件进行修改操作；

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;