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.
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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();
}
} |
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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 |
