利用.net自带的压缩和解压缩方法GZip

代码片段：

/// <summary>
/// 压缩字符串
/// </summary>
/// <param name="strUncompressed">未压缩的字符串</param>
/// <returns>压缩的字符串</returns>
public static string StringCompress(string strUncompressed)
{
    byte[] bytData = System.Text.Encoding.Unicode.GetBytes(strUncompressed);
    MemoryStream ms = new MemoryStream();
    Stream s = new GZipStream(ms, CompressionMode.Compress);
    s.Write(bytData, 0, bytData.Length);
    s.Close();
    byte[] dataCompressed = (byte[])ms.ToArray();
    return System.Convert.ToBase64String(dataCompressed, 0, dataCompressed.Length);
}