public void AddCard()
        {
            parkcardinfo p = new parkcardinfo();

            p.Card_value = card_value1.Text;
            p.Name       = car_user1.Text;
            p.Carnumber  = car_number1.Text;
            p.Idcard     = idcard1.Text;
            p.Sex        = "男";

            if (sex1.Checked)
            {
                p.Sex = "男";
            }
            if (sex2.Checked)
            {
                p.Sex = "女";
            }
            DialogResult r = MessageBox.Show("您要办理的停车证信息如下:\n卡号:" + p.Card_value + "\n姓名:" + p.Name + "\n性别:" + p.Sex + "\n车牌号:" + p.Carnumber + "\n身份证号:" + p.Idcard, "提示", MessageBoxButtons.OKCancel, MessageBoxIcon.Question);

            if (r == DialogResult.OK)
            {
                p.insert();
                card_value1.Text = "";
                car_number1.Text = "";

                car_user1.Text = "";
                idcard1.Text   = "";
                MessageBox.Show("办理成功,请提醒持有人妥善保管!");
            }
        }
        public void EditinfoOK()
        {
            parkcardinfo p = new parkcardinfo();

            p.Name      = name.Text;
            p.Carnumber = carnumber.Text;
            p.Idcard    = idcard.Text;
            p.Sex       = sex3;
            p.Id        = id;
            p.State     = state2;
            int result = p.update();

            MessageBox.Show("修改成功!");
        }