WebService中Dataset的压缩序列化和解压反序列化

第一步：引入命名空间下载DataSetSurrogate组件

using System.IO.Compression;

using System.Runtime.Serialization.Formatters.Binary;

将下载好的DataSetSurrogate放入bin路径下

第二步：压缩序列化

///序列化转化为二进制数组的DataSet

public byte[] GetDataSetSurrogateZipBYtes(DataSet DS)

{

DataSetSurrogate dss = new DataSetSurrogate(DS);

///二进制方式方式序列化

BinaryFormatter ser = new BinaryFormatter();

MemoryStream ms = new MemoryStream();

ser.Serialize(ms, dss);

byte[] buffer = ms.ToArray();

///调用压缩方法

byte[] Zipbuffer = Compress(buffer);

return Zipbuffer;

}

///压缩二进制文件

private byte[] Compress(byte[] data)

{

MemoryStream ms = new MemoryStream();

Stream zipStream = null;

zipStream = new GZipStream(ms, CompressionMode.Compress, true);

///从指定的字节数组中将压缩的字节写入基础流

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;

}

第三部：解压反序列化

///将压缩后的二进制数组解压

public static byte[] Decompress(byte[] data)

{ ///data参数为压缩后的二进制数组

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;

///返回解压后的二进制数组

}

catch

{

return null;

}

}

/// 将二进制文件反序列化后转化为DataSet

public DataSet GetDatasetFromByte(byte[] ZipByte)

{

byte[] buffer = UnZipClass.Decompress(ZipByte);

BinaryFormatter ser = new BinaryFormatter();

DataSetSurrogate dss;

dss = (DataSetSurrogate)ser.Deserialize(new MemoryStream(buffer));

DataSet DS = dss.ConvertToDataSet();

return DS;

}