private void BtnReigster_Click(object sender, EventArgs e) { string pid = txtId.Text.Trim(); if (MyUtils.GetPersonById(pid) != null) { MessageBox.Show("用户已存在,注册失败"); } else { string name = txtName.Text.Trim(); string pwd = txtPwd.Text; Gender gender = rbMan.Checked ? Gender.男 : Gender.女; string birthday = txtBirthday.Value.ToShortDateString(); string phone = txtPhone.Text.Trim(); string email = txtEmail.Text.Trim(); Person person = new Person(pid, name, pwd, gender, birthday, phone, email); MyUtils.AddPerson(person); MessageBox.Show("注册成功"); } }