private void btnFind_Click(object sender, EventArgs e) { try { int pucIIN = 0; int rtnTemp; rtnTemp = IDCardAPI.SDT_StartFindIDCard(iPort, ref pucIIN, 1); //再找卡 if (rtnTemp != 159) { // rtnTemp = SDT_ClosePort(EdziPortID); txtFind.Text = "未放卡或者卡未放好,请重新放卡!"; } else { txtFind.Text = "找卡成功!"; } } catch (Exception ex) { MessageBox.Show(ex.Message); } }