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Web Service 中返回DataSet结果的几种方法：
1)直接返回DataSet对象
特点：通常组件化的处理机制，不加任何修饰及处理；
优点：代码精减、易于处理，小数据量处理较快；
缺点：大数据量的传递处理慢，消耗网络资源；
建议：当应用系统在内网、专网（局域网）的应用时，或外网（广域网）且数据量在KB级时的应用时，采用此种模式。
2)返回DataSet对象用Binary序列化后的字节数组
特点：字节数组流的处理模式；
优点：易于处理，可以中文内容起到加密作用；
缺点：大数据量的传递处理慢，较消耗网络资源；
建议：当系统需要进行较大数据交换时采用。
3)返回DataSetSurrogate对象用Binary 序列化后的字节数组
特点：微软提供的开源组件；下载地址： http://support.microsoft.com/kb/829740/zh-cn
优点：易于处理，可以中文内容起到加密作用；
缺点：大数据量的传递处理慢，较消耗网络资源；
建议：当系统需要进行较大数据交换时采用。
4)返回DataSetSurrogate对象用Binary 序列化并Zip压缩后的字节数组
特点：对字节流数组进行压缩后传递；
优点：当数据量大时，性能提高效果明显，压缩比例大；
缺点：相比第三方组件，压缩比例还有待提高；
建议：当系统需要进行大数据量网络数据传递时，建议采用此种可靠、高效、免费的方法。
代码示例:
服务端
using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.Services; using System.Data; using System.Data.SqlClient; using System.Runtime.Serialization; using System.Runtime.Serialization.Formatters.Binary; using System.IO; using System.IO.Compression; namespace DataSetWebService { /// <summary> /// Summary description for Service1 /// </summary> [WebService(Namespace = "http://tempuri.org/")] [WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)] [System.ComponentModel.ToolboxItem(false)] public class DataSetService : System.Web.Services.WebService { string connectionString = "Server=.;DataBase=NORTHWIND;user id=sa;password=sa;"; [WebMethod(Description = "直接返回DataSet对象")] public DataSet GetDataSet() { DataSet DS = new DataSet(); string sql = "SELECT * FROM [Customers]"; using (SqlConnection conn = new SqlConnection(connectionString)) { conn.Open(); SqlDataAdapter dataAd = new SqlDataAdapter(sql, conn); dataAd.Fill(DS); } return DS; } [WebMethod(Description = "返回DataSet对象用Binary序列化后的字节数组")] public byte[] GetDataSetBytes() { DataSet DS = GetDataSet(); BinaryFormatter ser = new BinaryFormatter(); MemoryStream ms = new MemoryStream(); ser.Serialize(ms, DS); 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 ds = GetDataSet(); DataSetSurrogate dss = new DataSetSurrogate(ds); 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序列化后的字节数组")] public byte[] GetDataSetSurrogateZipBytes() { 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; } /// <summary> /// 压缩二进制数据 /// </summary> /// <param name="data"></param> /// <returns></returns> public byte[] Compress(byte[] data) { MemoryStream ms = new MemoryStream(); Stream zipStream = null; using (zipStream = new GZipStream(ms, CompressionMode.Compress, true)) { zipStream.Write(data, 0, data.Length); zipStream.Close(); } ms.Position = 0; byte[] compressedData = new byte[ms.Length]; ms.Read(compressedData, 0, int.Parse(ms.Length.ToString())); return compressedData; } } }
客户端：
using System; using System.Collections.Generic; using System.Data; using System.Linq; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; using System.IO; using System.IO.Compression; using System.Runtime.Serialization.Formatters.Binary; namespace Test { public partial class _Default : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { } WService.DataSetServiceSoapClient _Ds = new WService.DataSetServiceSoapClient(); private void BindDataSet(DataSet DS) { this.GridView1.DataSource = DS.Tables[0]; this.GridView1.DataBind(); } /// <summary> ///调用 直接返回DataSet对象 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> protected void Button1_Click(object sender, EventArgs e) { DataSet ds= _Ds.GetDataSet(); BindDataSet(ds); } /// <summary> /// 调用 返回DataSet对象用Binary序列化后的字节数组 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> protected void Button2_Click(object sender, EventArgs e) { byte[] buffer = _Ds.GetDataSetBytes(); BinaryFormatter bf = new BinaryFormatter(); DataSet ds = bf.Deserialize(new MemoryStream(buffer)) as DataSet; BindDataSet(ds); Label2.Text = buffer.Length.ToString(); } /// <summary> /// 调用 返回DataSetSurrogate对象用Binary序列化后的字节数组 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> protected void Button3_Click(object sender, EventArgs e) { byte[] buffer = _Ds.GetDataSetSurrogateBytes(); BinaryFormatter bf = new BinaryFormatter(); DataSetSurrogate dss = bf.Deserialize(new MemoryStream(buffer)) as DataSetSurrogate; DataSet ds = dss.ConvertToDataSet(); BindDataSet(ds); Label3.Text = buffer.Length.ToString(); } /// <summary> /// 调用 返回DataSetSurrogate对象用Binary序列化后的字节数组 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> protected void Button4_Click(object sender, EventArgs e) { byte[] buffer = _Ds.GetDataSetSurrogateZipBytes(); MemoryStream ms = new MemoryStream(buffer); Stream zipStream = new GZipStream(ms, CompressionMode.Decompress); byte[] dc_data = null; int totalBytesRead = 0; while (true) { Array.Resize(ref dc_data, totalBytesRead + buffer.Length + 1); int bytesRead = zipStream.Read(dc_data,totalBytesRead, buffer.Length); if (bytesRead == 0) { break; } totalBytesRead += bytesRead; } BinaryFormatter bf = new BinaryFormatter(); DataSetSurrogate dss = bf.Deserialize(new MemoryStream(dc_data)) as DataSetSurrogate; DataSet ds = dss.ConvertToDataSet(); BindDataSet(ds); Label4.Text = buffer.Length.ToString(); } } }
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原文地址：http://www.cnblogs.com/qtiger/p/5692579.html
