private void Pay_btn_Click(object sender, EventArgs e)
        {
            Account_BO account_BO = new Account_BO();
            ArrayList list = new ArrayList(account_BO.readAccount());
            ArrayList userBill = new ArrayList(account_BO.getUserBill());

            try
            {
                int temp = index1;

                int i;
                int k = 1; ;
                for (i = index1; list[i].ToString() != "*****"; i++)
                {
                    k++;
                }

                int m = 0;

                while (userBill[m].ToString() != list[index1].ToString())
                {
                    m++;
                }

                int n;
                int o = 1;
                for (n = m; userBill[n].ToString() != "*"; n++)
                {
                    o++;
                }

                userBill.RemoveRange(m, o);
                list.RemoveRange(temp, k);
                account_BO.createAccount(list);
                account_BO.decreaseTotalUser();
                account_BO.setUserBill(userBill);

                MessageBox.Show("Account remove successfull...");

                this.Hide();
                Home_Admin home_Admin = new Home_Admin();
                home_Admin.Show();
            }
            catch
            {
                MessageBox.Show("Wrong!!!");
            }
        }