/**//**//**////<summary> /// 压缩文件 ///</summary> using System; using System.IO; using ICSharpCode.SharpZipLib.Checksums; using ICSharpCode.SharpZipLib.Zip; using ICSharpCode.SharpZipLib.GZip; namespace Compression ...{ publicclass ZipClass ...{ publicvoid ZipFile(string FileToZip, string ZipedFile ,int CompressionLevel, int BlockSize) ...{ //如果文件没有找到,则报错 if (! System.IO.File.Exists(FileToZip)) ...{ thrownew System.IO.FileNotFoundException("The specified file "+ FileToZip +" could not be found. Zipping aborderd"); } System.IO.FileStream StreamToZip =new System.IO.FileStream(FileToZip,System.IO.FileMode.Open , System.IO.FileAccess.Read); System.IO.FileStream ZipFile = System.IO.File.Create(ZipedFile); ZipOutputStream ZipStream =new ZipOutputStream(ZipFile); ZipEntry ZipEntry =new ZipEntry("ZippedFile"); ZipStream.PutNextEntry(ZipEntry); ZipStream.SetLevel(CompressionLevel); byte[] buffer =newbyte[BlockSize]; System.Int32 size =StreamToZip.Read(buffer,0,buffer.Length); ZipStream.Write(buffer,0,size); try ...{ while (size < StreamToZip.Length) ...{ int sizeRead =StreamToZip.Read(buffer,0,buffer.Length); ZipStream.Write(buffer,0,sizeRead); size += sizeRead; } } catch(System.Exception ex) ...{ throw ex; } ZipStream.Finish(); ZipStream.Close(); StreamToZip.Close(); } publicvoid ZipFileMain(string[] args) ...{ string[] filenames = Directory.GetFiles(args[0]); Crc32 crc =new Crc32(); ZipOutputStream s =new ZipOutputStream(File.Create(args[1])); s.SetLevel(6); // 0 - store only to 9 - means best compression foreach (string file in filenames) ...{ //打开压缩文件 FileStream fs = File.OpenRead(file); byte[] buffer =newbyte[fs.Length]; fs.Read(buffer, 0, buffer.Length); FileInfo info =new FileInfo(file); ZipEntry entry =new ZipEntry(info.Name); //压缩后显示的路径为当前压缩的目录 //ZipEntry entry = new ZipEntry(file); //压缩后显示全路径 entry.DateTime = DateTime.Now; // set Size and the crc, because the information // about the size and crc should be stored in the header // if it is not set it is automatically written in the footer. // (in this case size == crc == -1 in the header) // Some ZIP programs have problems with zip files that don't store // the size and crc in the header. entry.Size = fs.Length; fs.Close(); crc.Reset(); crc.Update(buffer); entry.Crc = crc.Value; s.PutNextEntry(entry); s.Write(buffer, 0, buffer.Length); } s.Finish(); s.Close(); } } }
现在再来看看解压文件类的源码
/**//**//**////<summary> /// 解压文件 ///</summary> using System; using System.Text; using System.Collections; using System.IO; using System.Diagnostics; using System.Runtime.Serialization.Formatters.Binary; using System.Data; using ICSharpCode.SharpZipLib.BZip2; using ICSharpCode.SharpZipLib.Zip; using ICSharpCode.SharpZipLib.Zip.Compression; using ICSharpCode.SharpZipLib.Zip.Compression.Streams; using ICSharpCode.SharpZipLib.GZip; namespace DeCompression ...{ publicclass UnZipClass ...{ publicvoid UnZip(string[] args) ...{ ZipInputStream s =new ZipInputStream(File.OpenRead(args[0])); ZipEntry theEntry; while ((theEntry = s.GetNextEntry()) !=null) ...{ string directoryName = Path.GetDirectoryName(args[1]); string fileName = Path.GetFileName(theEntry.Name); //生成解压目录 Directory.CreateDirectory(directoryName); if (fileName != String.Empty) ...{ //解压文件到指定的目录 FileStream streamWriter = File.Create(args[1]+theEntry.Name); int size =2048; byte[] data =newbyte[2048]; while (true) ...{ size = s.Read(data, 0, data.Length); if (size >0) ...{ streamWriter.Write(data, 0, size); } else ...{ break; } } streamWriter.Close(); } } s.Close(); } } }