private void btnSelectFee_Click(object sender, EventArgs e) { Fee fee = new Fee(); Balance balance = new Balance(); //显示余额 balance.PatientID = int.Parse(txPatientID2.Text); Prepaid prepaid = new Prepaid(); if (prepaid.FindBalance(balance)) { txBalance1.Text = balance.BalanceMoney.ToString(); } else { MessageBox.Show("查无此病例"); } //PrintFeeByDate fee.PatientID = int.Parse(txPatientID2.Text); fee.Time = dateTimePicker2.Value.ToString("yyyy-MM-dd"); if (prepaid.ShowFeeByDate(fee)) { dataGridView1.DataSource = fee.FeeTable; } else { MessageBox.Show("本日没有交费项目"); } }