怎样提高WebService的性能

服务器端WebService程序using?System.Runtime.Serialization.Formatters.Binary;
using?System.IO;
using?System.IO.Compression;
using?System.Data.SqlClient;
………
public?class?Service1?:?System.Web.Services.WebService
{

????[WebMethod(Description?=?"直接返回?DataSet?对象。")]
????public?DataSet?GetNorthwindDataSet()
????{
????????string?sql?=?"SELECT?*?FROM?DB";
????????SqlConnection?conn?=?new?SqlConnection("Server=60.28.25.58;DataBase=s168593;user?id=s168593;password=*****;");
????????conn.Open();
????????SqlDataAdapter?dataadapter?=?new?SqlDataAdapter(sql,?conn);
????????DataSet?ds?=?new?DataSet();
????????dataadapter.Fill(ds,?"DB");
????????conn.Close();
????????return?ds;
????}
????
????[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?=?Compress(buffer);
????????return?zipBuffer;
????}
????
????public?byte[]?Compress(byte[]?data)
????{
????????try
????????{
????????????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,?int.Parse(ms.Length.ToString()));
????????????return?compressed_data;
????????}
????????catch
????????{
????????????return?null;
????????}
????}
}

客户端WebService程序

private?void?button1_Click(object?sender,?EventArgs?e) { ????com.dzbsoft.www.Service1?ds?=?new?com.dzbsoft.www.Service1(); ????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) { ????com.dzbsoft.www.Service1?ds?=?new?com.dzbsoft.www.Service1(); ????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) { ????com.dzbsoft.www.Service1?ds?=?new?com.dzbsoft.www.Service1(); ????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) { ????com.dzbsoft.www.Service1?ds?=?new?com.dzbsoft.www.Service1(); ????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; ????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"; } 客户端UnZipClass程序 public?static?class?UnZipClass { ????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?=?ExtractBytesFromStream(zipStream,?data.Length); ????????????return?dc_data; ????????} ????????catch ????????{ ????????????return?null; ????????} ????} ????public?static?byte[]?ExtractBytesFromStream(Stream?zipStream,?int?dataBlock) ????{ ????????byte[]?data?=?null; ????????int?totalBytesRead?=?0; ????????try ????????{ ????????????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; ????????} ????} }