// 关闭读写器
 private void 关闭读写器()
 {
     if (reader != null)
     {
         reader.DisConnect();
         reader = null;
     }
 }
 // 关闭读写器
 private void 关闭读写器()
 {
     if (_reader != null)
     {
         _reader.DisConnect();
         _isConnected = false;
         _reader      = null;
     }
 }
 // 连接读写器
 private void Connect()
 {
     reader = new ReaderHandle();
     if (reader.Connect())
     {
         MessageBox.Show("读写器连接成功");
     }
     else
     {
         MessageBox.Show("读写器连接失败");
     }
 }
        //----------------------------硬件


        // 连接读写器
        private void Connect()
        {
            if (_reader == null)
            {
                _reader = new ReaderHandle();

                _isConnected = _reader.Connect();
            }

            if (!_isConnected)
            {
                MessageBox.Show("读写器连接失败");
            }
            else
            {
                MessageBox.Show("读写器连接成功");
            }
        }
 private void 硬件连接()
 {
     _reader = null;
     //txbEpc.Text = "";
     Connect();
 }