[WPF 學習] 5. 1 版本升級之壓縮和解壓

生成的單個文件的壓縮率可達50%，忍不住要壓縮一下，當然下載的時候也需要解壓，我用的是GZipStream

1.壓縮

            string filePath = ((System.Array)e.Data.GetData(DataFormats.FileDrop)).GetValue(0).ToString();
            FileInfo fi = new FileInfo(filePath);
            using FileStream msSource = fi.OpenRead();
            using MemoryStream msTarget = new MemoryStream();
            using GZipStream compressionStream = new GZipStream(msTarget, CompressionMode.Compress);
            msSource.CopyTo(compressionStream);
            compressionStream.Flush();

compressionStream.Flush();這很重要，否則msTarget.ToArray()會丟掉部分內容。

2.解壓

        using MemoryStream mss = new MemoryStream(buffer);
        using FileStream mst = File.Create(currentProcess.MainModule.FileName + "~");
        using GZipStream decompressionStream = new GZipStream(mss, CompressionMode.Decompress);
        decompressionStream.CopyTo(mst);