We are going to use the Northwind database in our examples.
At first, import the "System.Data.OleDb" namespace.To work with Microsoft Access and other OLE DB database providers,we need this namespace. We will create the connection to the database in the Page_Load subroutine and then create a dbconn variable as a new OleDbConnection class with a connection string which identifies the OLE DB provider and the location of the database and then we open the database connection:
<%@ Import Namespace="System.Data.OleDb" %>
<script runat="server">
sub Page_Load
dim dbconn
dbconn=New OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;
data source=" & server.mappath("northwind.mdb"))
dbconn.Open()
end sub
</script>
Note: The connection string must be a continuous string without a line break!
Create a Database Command
We will create a dbcomm variable as a new OleDbCommand class to specify the records to retrieve from the database.For issuing SQL queries against database tables,the OleDbCommand class is used:
<%@ Import Namespace="System.Data.OleDb" %>
<script runat="server">
sub Page_Load
dim dbconn,sql,dbcomm
dbconn=New OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;
data source=" & server.mappath("northwind.mdb"))
dbconn.Open()
sql="SELECT * FROM customers"
dbcomm=New OleDbCommand(sql,dbconn)
end sub
</script>
Create a DataReader
to read a stream of records from a data source,the OleDbDataReader class is used.
By calling the ExecuteReader method of the OleDbCommand object,a DataReader is created:
<%@ Import Namespace="System.Data.OleDb" %>
<script runat="server">
sub Page_Load
dim dbconn,sql,dbcomm,dbread
dbconn=New OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;
data source=" & server.mappath("northwind.mdb"))
dbconn.Open()
sql="SELECT * FROM customers"
dbcomm=New OleDbCommand(sql,dbconn)
dbread=dbcomm.ExecuteReader()
end sub
</script>
Bind to a Repeater Control
Then we bind the DataReader to a Repeater control as follows:
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