Reads a forward-only stream of rows from DB2.
The following example creates a
DB2Connection, a
DB2Command, and a
DB2DataReader. The example reads through the data, writing it out to the console. Finally, the example closes the
DB2DataReader, then the
DB2Connection.
public void ReadMyData(string myConnString) {
DB2Connection db2Connection = new DB2Connection(myConnString);
DB2Command db2Command = (DB2Command)db2Connection.CreateCommand();
db2Command.CommandText = "SELECT DeptNo, DName, Loc FROM Dept";
db2Connection.Open();
DB2DataReader db2Reader = db2Command.ExecuteReader();
try {
// Always call Read before accessing data.
while (db2Reader.Read()) {
Console.WriteLine(db2Reader.GetInt32(0).ToString() + " " +
db2Reader.GetString(1) + " " + db2Reader.GetString(2));
}
}
finally {
// always call Close when done reading.
db2Reader.Close();
// Close the connection when done with it.
db2Connection.Close();
}
}
Public Sub ReadMyData(ByVal myConnString As String)
Dim db2Connection As New DB2Connection(myConnString)
Dim db2Command As DB2Command = db2Connection.CreateCommand()
db2Command.CommandText = "SELECT DeptNo, DName, Loc FROM Dept"
db2Connection.Open()
Dim db2Reader As DB2DataReader = db2Command.ExecuteReader()
Try
' Always call Read before accessing data.
While db2Reader.Read()
Console.WriteLine(String.Concat(db2Reader.GetInt32(0).ToString(), " ", _
db2Reader.GetString(1), " ", db2Reader.GetString(2)))
End While
Finally
' always call Close when done reading.
db2Reader.Close()
' Close the connection when done with it.
db2Connection.Close()
End Try
End Sub
Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2