private void btn_Diner_Click(object sender, EventArgs e)
 {
     DateTime Lunch = new DateTime(2015, 01, 01, 12, 00, 00);
     DateTime Diner = new DateTime(2015, 01, 01, 18, 00, 00);
     DateTime Nu = new DateTime(2015, 01, 01, 14, 00, 00);
     if (DateTime.Now >= Diner)
     {
         Bestelling Bestelling = new Bestelling("Diner", Tafels.tafelnummer);
         Bestelling.Show();
         this.Hide();
     }
     else
     {
         MessageBox.Show("Diner kan alleen besteld worden na 18:00");
     }
 }
        private void btn_Diner_Click(object sender, EventArgs e)
        {
            DateTime Lunch = new DateTime(2015, 01, 01, 12, 00, 00);
            DateTime Diner = new DateTime(2015, 01, 01, 18, 00, 00);
            DateTime Nu    = new DateTime(2015, 01, 01, 14, 00, 00);

            if (DateTime.Now >= Diner)
            {
                Bestelling Bestelling = new Bestelling("Diner", Tafels.tafelnummer);
                Bestelling.Show();
                this.Hide();
            }
            else
            {
                MessageBox.Show("Diner kan alleen besteld worden na 18:00");
            }
        }
 private void btn_Dranken_Click(object sender, EventArgs e)
 {
     Bestelling Bestelling = new Bestelling("Dranken", Tafels.tafelnummer);
     Bestelling.Show();
     this.Hide();
 }