C#使用GZipStream实现文件的压缩与解压

本文为大家分享了C#实现文件的压缩与解压的具体代码,供大家参考。

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[1024 * 1024];
          int r = fr.Read(by, 0, by.Length);
          while (r > 0)
          {
            gz.Write(by, 0, r);
            r = fr.Read(by, 0, 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[1024 * 1024];
          int r = gz.Read(by, 0, by.Length);
          while (r > 0)
          {
            fw.Write(by, 0, r);
            r = gz.Read(by, 0, r);
          }
        }
      }
    }

Console.WriteLine("解压完成。");
Console.ReadKey();

2. 运行结果

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目前经常出现的时间有三个:本地时间(locale time)格林威治时间(Greenwich Mean Time GMT)时间协调时间 (Universal Time Coordinated UTC) ...