ตั้งเวลา ให้มีการ select ข้อมูล จากฐานข้อมูล ทุก 1 ชั่วโมงยังไงครับ

   Private Sub Timer1_Tick(sender As System.Object, e As System.EventArgs) Handles Timer1.Tick
        Label1.Text = TimeOfDay
        If Label1.Text = "12:00:00" Then
            Timer1.Stop()
            MsgBox("OK")
            Timer1.Start()
        ElseIf Label1.Text = "13:00:00" Then
            Timer1.Stop()
            MsgBox("OK")
            Timer1.Start()
        ElseIf Label1.Text = "14:00:00" Then
            Timer1.Stop()
            MsgBox("OK")
            Timer1.Start()
        ElseIf Label1.Text = "15:00:00" Then
            Timer1.Stop()
            MsgBox("OK")
            Timer1.Start()
        End If
    End Sub
    Private Sub Form1_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load
        Timer1.start()
    End Sub

private void Timer1_Tick(System.Object sender, System.EventArgs e)
{
	Label1.Text = DateAndTime.TimeOfDay;
	if (Label1.Text == "12:00:00") {
		Timer1.Stop();
		Interaction.MsgBox("OK");
		Timer1.Start();
	} else if (Label1.Text == "13:00:00") {
		Timer1.Stop();
		Interaction.MsgBox("OK");
		Timer1.Start();
	} else if (Label1.Text == "14:00:00") {
		Timer1.Stop();
		Interaction.MsgBox("OK");
		Timer1.Start();
	} else if (Label1.Text == "15:00:00") {
		Timer1.Stop();
		Interaction.MsgBox("OK");
		Timer1.Start();
	}
}
private void Form1_Load(System.Object sender, System.EventArgs e)
{
	Timer1.start();
}