private void NewTransaction(object sender, EventArgs e)
 {
     currentReciept          = new Transactions.Reciept();
     currentReciept.datetime = DateTime.Now;
     WriteReciept(); //rewrites the current reciept
     button3.Enabled   = true;
     groupBox4.Enabled = true;
 }
        public void View(double invoiceNumber)
        {
            //sets the current reciept to the one of the invoice number
            currentReciept = transactions.rl.find(invoiceNumber);

            //rewrites the current reciept
            WriteReciept();
        }