private void cancelRegButton_Click(object sender, EventArgs e)
{
if (howtocancel == -1)
{
MessageBox.Show("系统异常，在未查找到信息的情况下不能删除");
}
else if (howtocancel == 1)
{
string updateReg = "UPDATE `regandduty` set `ifUse`='0', `paiID`='' WHERE `regID`='" + regID.Text + "'";
if (sql.update(updateReg) == 1)
{
MessageBox.Show("退号成功");
clear();
clearReg();
}
}
else if (howtocancel == 0)
{
string delquery = "DELETE FROM `addReg` WHERE `RegID`='" + regID.Text + "'";
if (sql.del(delquery))
{
MessageBox.Show("退号成功");
clearReg(); clear();
}
}
}
