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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, 0, 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;

        }

    }

}