C#字符串压缩和解压

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能够直接使用的函数

#region  压缩和解压字符串        /// <summary>        /// 将传入字符串以GZip算法压缩后，返回Base64编码字符        /// </summary>        /// <param name="rawString">需要压缩的字符串</param>        /// <returns>压缩后的Base64编码的字符串</returns>        public static string GZipCompressString(string rawString)        {            if (string.IsNullOrEmpty(rawString) || rawString.Length == 0)            {                return "";            }            else            {                byte[] rawData = System.Text.Encoding.UTF8.GetBytes(rawString.ToString());                byte[] zippedData = Compress(rawData);                return (string)(Convert.ToBase64String(zippedData));            }        }        /// <summary>        /// GZip压缩        /// </summary>        /// <param name="rawData"></param>        /// <returns></returns>        static byte[] Compress(byte[] rawData)        {            System.IO.MemoryStream ms = new System.IO.MemoryStream();            System.IO.Compression.GZipStream compressedzipStream = new System.IO.Compression.GZipStream(ms, System.IO.Compression.CompressionMode.Compress, true);            compressedzipStream.Write(rawData, 0, rawData.Length);            compressedzipStream.Close();            return ms.ToArray();        }        /// <summary>        /// 解压        /// </summary>        /// <param name="Value"></param>        /// <returns></returns>        public static DataSet GetDatasetByString(string Value)        {            DataSet ds = new DataSet();            string CC = GZipDecompressString(Value);            System.IO.StringReader Sr = new System.IO.StringReader(CC);            ds.ReadXml(Sr);            return ds;        }        /// <summary>        /// 将传入的二进制字符串资料以GZip算法解压缩        /// </summary>        /// <param name="zippedString">经GZip压缩后的二进制字符串</param>        /// <returns>原始未压缩字符串</returns>        public static string GZipDecompressString(string zippedString)        {            if (string.IsNullOrEmpty(zippedString) || zippedString.Length == 0)            {                return "";            }            else            {                byte[] zippedData = Convert.FromBase64String(zippedString.ToString());                return (string)(System.Text.Encoding.UTF8.GetString(Decompress(zippedData)));            }        }           /// <summary>        /// ZIP解压        /// </summary>        /// <param name="zippedData"></param>        /// <returns></returns>        public static byte[] Decompress(byte[] zippedData)        {            System.IO.MemoryStream ms = new System.IO.MemoryStream(zippedData);            System.IO.Compression.GZipStream compressedzipStream = new System.IO.Compression.GZipStream(ms, System.IO.Compression.CompressionMode.Decompress);            System.IO.MemoryStream outBuffer = new System.IO.MemoryStream();            byte[] block = new byte[1024];            while (true)            {                int bytesRead = compressedzipStream.Read(block, 0, block.Length);                if (bytesRead <= 0)                    break;                else                    outBuffer.Write(block, 0, bytesRead);            }            compressedzipStream.Close();            return outBuffer.ToArray();        }        #endregion

使用方法

string str=GZipCompressString(string)//压缩string str=GZipDecompressString(string)//解压

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