Listing 1 : Code pour produire un RecordSet ADO
<!--#include file="adovbs.inc"-->
<%
Dim connStr, rs
connStr = "Provider=SQLOLEDB.1;Persist Security Info=False;User
ID=sa;Initial Catalog=pubs;Data Source=localhost"
SET rs= Server.CreateObject("ADODB.Recordset")
rs.Open "Authors", connStr, adOpenForwardOnly, adLockOptimistic, adCmdTable
WHILE NOT rs.EOF
response.write rs("au_fname") & "," & rs("au_lname")& "<br>"
rs.moveNext
END
SET rs=nothing
%>
Listing 2
:Un service Web qui renvoie un DataSet
Imports System.Web.Services
Imports System.Data.SqlClient
Public Class Service1
Inherits System.Web.Services.WebService
Public Function getAuthors() AS DataSet
Dim sql AS String = "SELECT * FROM Authors"
Dim conn AS New SqlConnection("server=localhost; uid=sa;
password=; database=pubs")
Dim comm AS New SqlCommand(sql, conn)
Dim DataAdapter AS New SqlDataAdapter(comm)
Dim ds AS New DataSet()
Dim row AS DataRow
conn.Open()
DataAdapter.Fill(ds, "Authors_table")
conn.Close()
‘--Notice that the connection can be closed at this point because
--the DataSet is disconnected.
conn = Nothing
comm = Nothing
DataAdapter = Nothing
Return ds
END Function
END Class
Listing 3 : Code pour lier DataGrid à un DataSet
Private Sub Page_Load(ByVal sender AS System.Object, ByVal e AS
System.EventArgs) Handles MyBase.Load
Dim ws AS New WebserviceDataset.Service1()
DataGrid1.DataSource = ws.getAuthors
DataGrid1.DataBind()
END Sub
Listing 4 : Code qui utilise ADO dans .NET
Dim conn AS New ADODB.Connection()
Dim rs AS ADODB.Recordset
conn.Open("Provider=SQLOLEDB.1;User ID=sa;Initial
Catalog=Northwind;Data Source=localhost;")
rs = conn.Execute("SELECT * FROM Customers")
WHILE NOT rs.EOF
Response.Write(rs("CustomerID").Value)
rs.MoveNext()
END WHILE
conn = Nothing
rs = Nothing
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