对DataSet的序列化，压缩与解压

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;

}

}