webservices dataset压缩之研究及其结果（转）

看了几篇大神的文章，选择了以下组件实现：
wse3.0
DataSetSurrogate
Managed C++ wrapper for ZLib(不是zlib.dll,Managed C++就是托管环境c++编译的.net平台dll)

测试数据量40570条记录 9个字段
运行结果：
1   直接返回dataset                                                用时10.625
2   返回二进制序列化后dataset                                        用时9.609      12049645 byte
3   返回转化DataSetSurrogate的dataset 并且二进制序列化后              用时7.859      5138990 byte（2的42.6%）
4   返回转化DataSetSurrogate的dataset 并且二进制序列化后使用zip压缩    用时7.625       578033 byte （2的4.79%）

服务端部分代码：

C# code

[WebMethod(Description = "直接返回 DataSet 对象。")]
public DataSet GetNorthwindDataSet()
{
DataSet dataSet = this.QueryDataSet("select * from tbl_log");
return dataSet;
}
[WebMethod(Description = "返回 DataSet 对象用 Binary 序列化后的字节数组。")]
public byte[] GetDataSetBytes()
{
DataSet dataSet = GetNorthwindDataSet();
BinaryFormatter ser = new BinaryFormatter();
MemoryStream ms = new MemoryStream();
ser.Serialize(ms, dataSet);
byte[] buffer = ms.ToArray();
return buffer;
}
[WebMethod(Description = "返回 DataSetSurrogate 对象用 Binary 序列化后的字节数组。")]
public byte[] GetDataSetSurrogateBytes()
{
DataSet dataSet = GetNorthwindDataSet();
DataSetSurrogate dss = new DataSetSurrogate(dataSet);
BinaryFormatter ser = new BinaryFormatter();
MemoryStream ms = new MemoryStream();
ser.Serialize(ms, dss);
byte[] buffer = ms.ToArray();
return buffer;
}
[WebMethod(Description = "返回 DataSetSurrogate 对象用 Binary 序列化并 Zip 压缩后的字节数组。")]
public byte[] GetDataSetSurrogateZipBytes()
{
DataSet dataSet = GetNorthwindDataSet();
DataSetSurrogate dss = new DataSetSurrogate(dataSet);
BinaryFormatter ser = new BinaryFormatter();
MemoryStream ms = new MemoryStream();
ser.Serialize(ms, dss);
byte[] buffer = ms.ToArray();
byte[] zipBuffer = ZCompressor.Compress(buffer, CompressionLevel.Normal);
return zipBuffer;
}

客户端部分代码

C# code

private void button1_Click(object sender, EventArgs e)
{
WSdata.DataService ds = new WSdata.DataService();
DateTime dtBegin = DateTime.Now;
DataSet dataSet = ds.GetNorthwindDataSet();
this.label1.Text= string.Format("耗时：{0}", DateTime.Now - dtBegin);
binddata(dataSet);
}
private void button2_Click(object sender, EventArgs e)
{
WSdata.DataService ds = new WSdata.DataService();
DateTime dtBegin = DateTime.Now;
byte[] buffer = ds.GetDataSetBytes();
BinaryFormatter ser = new BinaryFormatter();
DataSet dataSet = ser.Deserialize(new MemoryStream(buffer)) as DataSet;
this.label2.Text = string.Format("耗时：{0}", DateTime.Now - dtBegin) + "  " + buffer.Length;
binddata(dataSet);
}
private void button3_Click(object sender, EventArgs e)
{
WSdata.DataService ds = new WSdata.DataService();
DateTime dtBegin = DateTime.Now;
byte[] buffer = ds.GetDataSetSurrogateBytes();
BinaryFormatter ser = new BinaryFormatter();
DataSetSurrogate dss = ser.Deserialize(new MemoryStream(buffer)) as DataSetSurrogate;
DataSet dataSet = dss.ConvertToDataSet();
this.label3.Text = string.Format("耗时：{0}", DateTime.Now - dtBegin) + "  " + buffer.Length;
binddata(dataSet);
}
private void button4_Click(object sender, EventArgs e)
{
WSdata.DataService ds = new WSdata.DataService();
DateTime dtBegin = DateTime.Now;
byte[] zipBuffer = ds.GetDataSetSurrogateZipBytes();
byte[] buffer = ZCompressor.Uncompress(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;
binddata(dataSet);
}
private void binddata(DataSet dataSet)
{
this.dataGridView1.DataSource = dataSet.Tables[0];
this.label5.Text = "共计："+ dataSet.Tables[0].Rows.Count+"条记录";
}