コード例 #1
0
        private void btnRemove_Click(object sender, EventArgs e)
        {
            try
            {
                order = (Convert.ToInt32(txtRemove.Text) - 1);
                TransactionHistory.History.RemoveAt(order);
                TransactionHistory.priceTotal.RemoveAt(order);
                Transact.Total = TransactionHistory.priceTotal.Sum();
                Transact.isVATable(Transact.Total);
                updateDisplay();
            }
            catch
            {
                MessageBox.Show("Please input an existing order");
                txtRemove.ResetText();
            }

            txtRemove.Text           = "Type the Order #";
            this.txtRemove.Font      = new System.Drawing.Font("Microsoft Sans Serif", 7.8F, System.Drawing.FontStyle.Italic, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
            this.txtRemove.ForeColor = System.Drawing.Color.Gray;
        }