private void button13_Click(object sender, EventArgs e) { if (string.Equals(textBox2.Text.ToString(), textBox3.Text.ToString())) { if (DAO.change_password(u1.Username, textBox2.Text.ToString())) { MessageBox.Show("修改成功!"); } else { MessageBox.Show("修改失败!"); } } else { MessageBox.Show("密码不一致,请重新输入!"); } }