private void btn_CascSelect_Click(object sender, RoutedEventArgs e)
{
bool status = false;
//把前一个防碰撞命令返回的UID（包含级联志）赋值给选择主机命令的UID（4 字节）
for (int i = 0; i < RFIDHelper.cardID.Length; i++)
{
RFIDHelper.PiccSelect[5 + i] = RFIDHelper.cardID[i];
}
//把计算好的BCC码赋值给选择字节数组
RFIDHelper.PiccSelect[RFIDHelper.PiccSelect.Length - 2] = RFIDHelper.bcc_Calc(RFIDHelper.PiccSelect);
status = RFIDHelper.cmdCom(RFIDHelper.PiccSelect, RFIDHelper.buffer_PiccSelect);
//判断从机应答状态是否为0和帧结束符是否为3
if (status)
{
//string temp = "SELECT * FROM authorization";
//StringBuilder temp2 = DataBaseHelper.QueryData(temp);
//string[] temp3 = temp2.ToString().Split(' ');
//for (int i = 0; i < temp3.Length; i++)
//{
// //字符串数组转换为字节数组，十六进制转为十进制
// MacthingCardID[i] = byte.Parse(temp3[i]);
//}
//Enumerable.SequenceEqual()
//把卡ID显示出来（4 字节，低字节在先）,十进制转为十六进制,如果高位没有值，就用0代替
tb_Hint.Text = "选择成功！\n" + "卡ID：" + RFIDHelper.showCardID();
}
else
{
tb_Hint.Text = "选择失败！";
}
}
private void btn_CascAnticoll_Click(object sender, RoutedEventArgs e)
{
bool status = false;
RFIDHelper.PiccAnticoll[RFIDHelper.PiccAnticoll.Length - 2] = RFIDHelper.bcc_Calc(RFIDHelper.PiccAnticoll);
status = RFIDHelper.cmdCom(RFIDHelper.PiccAnticoll, RFIDHelper.buffer_PiccAnticoll);
if (status)
{
tb_Hint.Text = " 防碰撞成功！\n" + "卡ID：" + RFIDHelper.showCardID();
}
else
{
tb_Hint.Text = "设备没应答！";
}
}