private void button2_Click(object sender, EventArgs e) { Int64 num = Int64.Parse(textBox6.Text); MobileDao dao = new MobileDao(); if (dao.checknumexists(num)) MessageBox.Show("此号码不存在", "错误", MessageBoxButtons.OK, MessageBoxIcon.Warning); else { AccountDao accountDao = new AccountDao(); Int32 customerId = accountDao.getCustomerId(num); CustomerDao customerDao = new CustomerDao(); label9.Text = customerDao.getName(customerId); MobileDao mobileDao = new MobileDao(); Mobile mobile = mobileDao.getMobile(num); label11.Text = num.ToString(); if (mobile.Mobiletype.Equals("world")) label13.Text = "全球通"; else if (mobile.Mobiletype.Equals("music")) label13.Text = "动感地带"; else label13.Text = "神州行"; label15.Text = mobile.Balance.ToString() + "元"; label18.Text = mobile.LastTimePayFor.ToString(); } }