（1）直接返回DataSet對象
< XMLNAMESPACE PREFIX ="P" />
特點：通常組件化的處理機制，不加任何修飾及處理；
優點：代碼精減、易於處理，小數據量處理較快；
缺點：大數據量的傳遞處理慢，消耗網絡資源；
建議：當應用系統在內網、專網（局域網）的應用時，或外網（廣域網）且數據量在KB級時的應用時，採用此種模式。
示例如下：
代碼
1 [WebMethod(Description ="直接返回 DataSet 對象。")]
2 public DataSet GetNorthwindDataSet()
3 {
4 string sql ="SELECT * FROM XT_TEXT";
5 SqlConnection conn =new SqlConnection("Server=60.28.25.58;DataBase=s168593;user id=s168593;password=h0y+FeC*;");
6 conn.Open();
7 SqlDataAdapter dataadapter =new SqlDataAdapter(sql, conn);
8 DataSet ds =new DataSet();
9 dataadapter.Fill(ds, "XT_TEXT");
10 conn.Close();
11 return ds;
12 }
13
客戶程序調用方法：
代碼
privatevoid button1_Click(object sender, EventArgs e)
{
//com.dzbsoft.www是上面Web Service發佈後的命名空間
com.dzbsoft.www.Service1 ds =new com.dzbsoft.www.Service1();
DateTime dtBegin = DateTime.Now;
DataSet dataSet = ds.GetNorthwindDataSet();
this.label1.Text =string.Format("耗時：{0}", DateTime.Now - dtBegin);
binddata(dataSet);
}
（2） 返回DataSet對象用Binary序列化後的字節數組
特點：字節數組流的處理模式；
優點：易於處理，可以中文內容起到加密作用；
缺點：大數據量的傳遞處理慢，較消耗網絡資源；
代碼
[WebMethod(Description ="返回 DataSet 對象用 Binary 序列化後的字節數組。")]
publicbyte[] GetDataSetBytes()
{
DataSet dataSet = GetNorthwindDataSet();
BinaryFormatter ser =new BinaryFormatter();
MemoryStream ms =new MemoryStream();
ser.Serialize(ms, dataSet);
byte[] buffer = ms.ToArray();
return buffer;
}
客戶程序調用方法：
代碼
privatevoid 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("耗時：{0}", DateTime.Now - dtBegin) +""+ buffer.Length;
binddata(dataSet);
}
(3) 返回DataSetSurrogate對象用Binary序列化後的字節數組
特點：微軟提供的開源組件；
優點：易於處理，可以中文內容起到加密作用；
缺點：大數據量的傳遞處理慢，較消耗網絡資源；
示例如下：
代碼
1 [WebMethod(Description ="返回 DataSetSurrogate 對象用 Binary 序列化後的字節數組。")]
2 publicbyte[] GetDataSetSurrogateBytes()
3 {
4 DataSet dataSet = GetNorthwindDataSet();
5 DataSetSurrogate dss =new DataSetSurrogate(dataSet);
6 BinaryFormatter ser =new BinaryFormatter();
7 MemoryStream ms =new MemoryStream();
8 ser.Serialize(ms, dss);
9 byte[] buffer = ms.ToArray();
10 return buffer;
11 }
12
客戶程序調用方法：
代碼
1 privatevoid button3_Click(object sender, EventArgs e)
2 {
3 com.dzbsoft.www.Service1 ds =new com.dzbsoft.www.Service1();
4 DateTime dtBegin = DateTime.Now;
5 byte[] buffer = ds.GetDataSetSurrogateBytes();
6 BinaryFormatter ser =new BinaryFormatter();
7 DataSetSurrogate dss = ser.Deserialize(new MemoryStream(buffer)) as DataSetSurrogate;
8 DataSet dataSet = dss.ConvertToDataSet();
9 this.label3.Text =string.Format("耗時：{0}", DateTime.Now - dtBegin) +""+ buffer.Length;
10 binddata(dataSet);
11 }
12
(4)返回DataSetSurrogate對象用Binary序列化並Zip壓縮後的字節數組
特點：對字節流數組進行壓縮後傳遞；
優點：當數據量大時，性能提高效果明顯，壓縮比例大；
缺點：相比第三方組件，壓縮比例還有待提高；
建議：當系統需要進行大數據量網絡數據傳遞時，建議採用此種可靠、高效、免費的方法。
示例如下：
代碼
[WebMethod(Description ="返回 DataSetSurrogate 對象用 Binary 序列化並 Zip 壓縮後的字節數組。")]
publicbyte[] 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;
}
publicbyte[] 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 =newbyte[ms.Length];
ms.Read(compressed_data, 0, int.Parse(ms.Length.ToString()));
return compressed_data;
}
catch
{
returnnull;
}
}
}
客戶程序調用方法：
代碼
1 privatevoid button4_Click(object sender, EventArgs e)
2 {
3 com.dzbsoft.www.Service1 ds =new com.dzbsoft.www.Service1();
4 DateTime dtBegin = DateTime.Now;
5 byte[] zipBuffer = ds.GetDataSetSurrogateZipBytes();
6 byte[] buffer = UnZipClass.Decompress(zipBuffer);
7 BinaryFormatter ser =new BinaryFormatter();
8 DataSetSurrogate dss = ser.Deserialize(new MemoryStream(buffer)) as DataSetSurrogate;
9 DataSet dataSet = dss.ConvertToDataSet();
10 this.label4.Text =string.Format("耗時：{0}", DateTime.Now - dtBegin) +""+ zipBuffer.Length;
11 binddata(dataSet);
12 }
13
private void binddata(DataSet dataSet)< XMLNAMESPACE PREFIX ="O" />
{
this.dataGridView1.DataSource = dataSet.Tables[0];
this.label5.Text = "共計：" + dataSet.Tables[0].Rows.Count + "條記錄";
}
代碼
1 客戶端UnZipClass程序
2 publicstaticclass UnZipClass
3 {
4 publicstaticbyte[] Decompress(byte[] data)
5 {
6 try
7 {
8 MemoryStream ms =new MemoryStream(data);
9 Stream zipStream =null;
10 zipStream =new GZipStream(ms, CompressionMode.Decompress);
11 byte[] dc_data =null;
12 dc_data = ExtractBytesFromStream(zipStream, data.Length);
13 return dc_data;
14 }
15 catch
16 {
17 returnnull;
18 }
19 }
20 publicstaticbyte[] ExtractBytesFromStream(Stream zipStream, int dataBlock)
21 {
22 byte[] data =null;
23 int totalBytesRead =0;
24 try
25 {
26 while (true)
27 {
28 Array.Resize(ref data, totalBytesRead + dataBlock +1);
29 int bytesRead = zipStream.Read(data, totalBytesRead, dataBlock);
30 if (bytesRead ==0)
31 {
32 break;
33 }
34 totalBytesRead += bytesRead;
35 }
36 Array.Resize(ref data, totalBytesRead);
37 return data;
38 }
39 catch
40 {
41 returnnull;
42 }
43 }
44 }
45