C# -- 文件的压缩与解压（GZipStream）

文件的压缩与解压

需引入 System.IO.Compression;

1.C#代码（入门案例）

             Console.WriteLine("压缩文件...............");
             using (FileStream fr = File.OpenRead("d:\\test.txt"))
             {
                 using (FileStream fw = File.OpenWrite("d:\\test.zip"))
                 {
                     using (GZipStream gz = new GZipStream(fw, CompressionMode.Compress))
                     {
 
                         byte[] by = new byte[ * ];
                         int r = fr.Read(by, , by.Length);
                         while (r > )
                         {
                             gz.Write(by, , r);
                             r = fr.Read(by, , r);
                         }
                     }
                 }
             }
             Console.WriteLine("压缩完成。");
 
             Console.WriteLine("解压文件...............");
             using (FileStream fr = File.OpenRead("d:\\test.zip"))
             {
                 using (GZipStream gz = new GZipStream(fr, CompressionMode.Decompress))
                 {
                     using (FileStream fw = File.OpenWrite("d:\\test2.txt"))
                     {
 
                         byte[] by = new byte[ * ];
                         int r = gz.Read(by, , by.Length);
                         while (r > )
                         {
                             fw.Write(by, , r);
                             r = gz.Read(by, , r);
                         }
                     }
                 }
             }
             Console.WriteLine("解压完成。");
 
             Console.ReadKey();

2. 运行结果