用GZip压缩和解压_Asp.Net开发技巧

.Net支持两种压缩格式：GZip和Deflate。我试了一下，压缩率和速度没区别。其中，GZip可以被WinRAR打开。

使用起来很简单，下面的程序将字符串压缩入文件：

                using (DeflateStream gzip = new DeflateStream(fs, CompressionMode.Compress))
                {
                    byte[] buf = Encoding.UTF8.GetBytes(this.txbSource.Text);
                    gzip.Write(buf, 0, buf.Length);
                    gzip.Flush();
                }

解压只需要这样：

            gzip = new GZipStream(new MemoryStream(buf), CompressionMode.Decompress);
            using (StreamReader reader = new StreamReader(gzip))
            {
                this.txBTarget.Text = reader.ReadToEnd();
            }

如果从文件解压，只需要把MemoryStream换成一个FileStream就行了。
当然，需要加：using System.IO.Compression;
http://www.cnblogs.com/fujingqiu/archive/2006/10/29/543347.html

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