public byte[] GetDataSetSurrogateZipBytes()//压缩 
        { 
            DataSet DS = GetDataSet(); 
            DataSetSurrogate dss = new DataSetSurrogate(DS); 
            BinaryFormatter ser = new BinaryFormatter(); 
            MemoryStream ms = new MemoryStream(); 
            ser.Serialize(ms, dss); 
            byte[] buffer = ms.ToArray(); 
            byte[] Zipbuffer = Compress(buffer); 
            return Zipbuffer; 
        } 
        public byte[] Compress(byte[] data)//压缩方法 
        { 
            MemoryStream ms = new MemoryStream(); 
            Stream zipStream = null; 
            zipStream = new GZipStream(ms, CompressionMode.Compress, true); 
            zipStream.Write(data, 0, data.Length); 
            zipStream.Close(); 
            ms.Position = 0; 
            byte[] compressed_data = new byte[ms.Length]; 
            ms.Read(compressed_data, 0, int.Parse(ms.Length.ToString())); 
            return compressed_data; 
        } 
//使用 
private void button4_Click(object sender, EventArgs e) 
        { 
            //调用Web Service的方法 
            com.dzbsoft.www.DataSetService ds = new Test.com.dzbsoft.www.DataSetService(); 
            DateTime dtBegin = DateTime.Now; 
            byte[] zipBuffer = ds.GetDataSetSurrogateZipBytes(); 
            byte[] buffer = UnZipClass.Decompress(zipBuffer); 
            BinaryFormatter ser = new BinaryFormatter(); 
            DataSetSurrogate dss = ser.Deserialize(new MemoryStream(buffer)) as DataSetSurrogate; 
            DataSet dataset = dss.ConvertToDataSet(); 
            this.label4.Text = string.Format("耗时：{0}", DateTime.Now - dtBegin + "          " + zipBuffer.Length.ToString()); 
            BindDataSet(dataset); 
        } 
public static byte[] Decompress(byte[] data) 
        { 
            try 
            { 
                MemoryStream ms = new MemoryStream(data); 
                Stream zipStream = null; 
                zipStream = new GZipStream(ms, CompressionMode.Decompress); 
                byte[] dc_data = null; 
                dc_data = EtractBytesFormStream(zipStream, data.Length); 
                return dc_data; 
            } 
            catch 
            { 
                return null; 
            } 
        } 

        public static byte[] EtractBytesFormStream(Stream zipStream, int dataBlock) 
        { 
            try 
            { 
                byte[] data = null; 
                int totalBytesRead = 0; 
                while (true) 
                { 
                    Array.Resize(ref data, totalBytesRead + dataBlock + 1); 
                    int bytesRead = zipStream.Read(data, totalBytesRead, dataBlock); 
                    if (bytesRead == 0) 
                    { 
                        break; 
                    } 
                    totalBytesRead += bytesRead; 
                } 
                Array.Resize(ref data, totalBytesRead); 
                return data; 
            } 
            catch 
            { 
                return null; 
            } 
        }