通过windows应用程序C#.net中的zkemkeeper.dll连接到设备

我正在尝试在网络中连接RFID和bio metrics设备，我的本地ip是

192.168.1.24

，RFID设备ip是

192.168.1.22

，我正在使用Visual studio 12作为示例windows应用程序。要连接此设备，但它会引发错误：

无法连接设备，错误代码=-201

请帮忙，谢谢

      bool isConnected;
        try {
            isConnected = zkem.Connect_Net(ipAddr.Text, Convert.ToInt32(4370));
        } catch (Exception ext) {
            Debug.WriteLine("Холбогдож чадсангүй" + ext);
            zkem.GetLastError(ref idwErrorCode);
            if (idwErrorCode != 0) {
                getError(idwErrorCode);
            } else {
                MessageBox.Show("No data from terminal returns!", "Error");
            }
            throw new Exception();
        }

        if (isConnected) { //Here you can register the realtime events that you want to be triggered(the parameters 65535 means registering all)
            this.btnRC.Enabled = false;
            zkem.EnableDevice(1, true);
            zkem.RegEvent(1, 65535);
            this.zkem.OnAttTransactionEx += new zkemkeeper._IZKEMEvents_OnAttTransactionExEventHandler(onAttTransactionEx);

            string sdwEnrollNumber = "";
            int idwVerifyMode = 0;
            int idwInOutMode = 0;
            int idwYear = 0;
            int idwMonth = 0;
            int idwDay = 0;
            int idwHour = 0;
            int idwMinute = 0;
            int idwSecond = 0;
            int idwWorkcode = 0;

            Cursor = Cursors.WaitCursor;
            zkem.EnableDevice(1, false);//disable the device
            if (zkem.ReadGeneralLogData(1)) { //read all the attendance records to the memory
                Debug.WriteLine("Trying to open connection");
                m_dbConnection.Open();
                Debug.WriteLine("Connection Opened");
                using (var command = new SQLiteCommand(m_dbConnection)) {
                    using (var transaction = m_dbConnection.BeginTransaction()) {
                        command.CommandText = String.Format("INSERT INTO `{0}` (`state`, `user_id`, `date`) VALUES(@state, @userID, @date)", prefix);
                        command.Prepare();
                        while (zkem.SSR_GetGeneralLogData(1, out sdwEnrollNumber, out idwVerifyMode,
                                out idwInOutMode, out idwYear, out idwMonth, out idwDay, out idwHour,
                                out idwMinute, out idwSecond, ref idwWorkcode)) { //get records from the memory

                            DateTime datetime = new DateTime(idwYear, idwMonth, idwDay, idwHour, idwMinute, idwSecond);
                            int unixDate = (Int32)(datetime.Subtract(new DateTime(1970, 1, 1))).TotalSeconds;
                            try {
                                command.Parameters.AddWithValue("@state", idwInOutMode);
                                command.Parameters.AddWithValue("@userID", Convert.ToInt32(sdwEnrollNumber));
                                command.Parameters.AddWithValue("@date", unixDate);
                            } catch (Exception ex) {
                                //Debug.WriteLine(ex.ToString() + Environment.NewLine + ex.StackTrace);
                            }
                            try {
                                command.ExecuteNonQuery();
                                Debug.WriteLine("inserted: " + String.Format("{0}/{1}/{2} {3}:{4}:{5}.000", idwYear , idwMonth, idwDay, idwHour, idwMinute, idwSecond));
                            } catch (SQLiteException ex) {
                                Debug.WriteLine(ex.ToString() +  " "+ex.StackTrace);
                            }
                        }
                        transaction.Commit();
                    }
                }
                m_dbConnection.Close();
                Debug.WriteLine("Connection Closed");
                Cursor = Cursors.Default;
            } else {
                Cursor = Cursors.Default;
                zkem.GetLastError(ref idwErrorCode);
                if (idwErrorCode != 0) {
                    getError(idwErrorCode);
                } else {
                    MessageBox.Show("No data from terminal returns!", "Error");
                }
            }
            zkem.EnableDevice(1, true); //enable the device
            Cursor = Cursors.Default;

            logBox.Items.Add("Холбогдлоо");
        }  

---

这是我的连接码。我只使用指纹。这很有效

在这里，我使用一些本地数据库，比如Sqlite来保存数据。当我需要发送它们时，我不需要再从机器中提取数据。

      bool isConnected;
        try {
            isConnected = zkem.Connect_Net(ipAddr.Text, Convert.ToInt32(4370));
        } catch (Exception ext) {
            Debug.WriteLine("Холбогдож чадсангүй" + ext);
            zkem.GetLastError(ref idwErrorCode);
            if (idwErrorCode != 0) {
                getError(idwErrorCode);
            } else {
                MessageBox.Show("No data from terminal returns!", "Error");
            }
            throw new Exception();
        }

        if (isConnected) { //Here you can register the realtime events that you want to be triggered(the parameters 65535 means registering all)
            this.btnRC.Enabled = false;
            zkem.EnableDevice(1, true);
            zkem.RegEvent(1, 65535);
            this.zkem.OnAttTransactionEx += new zkemkeeper._IZKEMEvents_OnAttTransactionExEventHandler(onAttTransactionEx);

            string sdwEnrollNumber = "";
            int idwVerifyMode = 0;
            int idwInOutMode = 0;
            int idwYear = 0;
            int idwMonth = 0;
            int idwDay = 0;
            int idwHour = 0;
            int idwMinute = 0;
            int idwSecond = 0;
            int idwWorkcode = 0;

            Cursor = Cursors.WaitCursor;
            zkem.EnableDevice(1, false);//disable the device
            if (zkem.ReadGeneralLogData(1)) { //read all the attendance records to the memory
                Debug.WriteLine("Trying to open connection");
                m_dbConnection.Open();
                Debug.WriteLine("Connection Opened");
                using (var command = new SQLiteCommand(m_dbConnection)) {
                    using (var transaction = m_dbConnection.BeginTransaction()) {
                        command.CommandText = String.Format("INSERT INTO `{0}` (`state`, `user_id`, `date`) VALUES(@state, @userID, @date)", prefix);
                        command.Prepare();
                        while (zkem.SSR_GetGeneralLogData(1, out sdwEnrollNumber, out idwVerifyMode,
                                out idwInOutMode, out idwYear, out idwMonth, out idwDay, out idwHour,
                                out idwMinute, out idwSecond, ref idwWorkcode)) { //get records from the memory

                            DateTime datetime = new DateTime(idwYear, idwMonth, idwDay, idwHour, idwMinute, idwSecond);
                            int unixDate = (Int32)(datetime.Subtract(new DateTime(1970, 1, 1))).TotalSeconds;
                            try {
                                command.Parameters.AddWithValue("@state", idwInOutMode);
                                command.Parameters.AddWithValue("@userID", Convert.ToInt32(sdwEnrollNumber));
                                command.Parameters.AddWithValue("@date", unixDate);
                            } catch (Exception ex) {
                                //Debug.WriteLine(ex.ToString() + Environment.NewLine + ex.StackTrace);
                            }
                            try {
                                command.ExecuteNonQuery();
                                Debug.WriteLine("inserted: " + String.Format("{0}/{1}/{2} {3}:{4}:{5}.000", idwYear , idwMonth, idwDay, idwHour, idwMinute, idwSecond));
                            } catch (SQLiteException ex) {
                                Debug.WriteLine(ex.ToString() +  " "+ex.StackTrace);
                            }
                        }
                        transaction.Commit();
                    }
                }
                m_dbConnection.Close();
                Debug.WriteLine("Connection Closed");
                Cursor = Cursors.Default;
            } else {
                Cursor = Cursors.Default;
                zkem.GetLastError(ref idwErrorCode);
                if (idwErrorCode != 0) {
                    getError(idwErrorCode);
                } else {
                    MessageBox.Show("No data from terminal returns!", "Error");
                }
            }
            zkem.EnableDevice(1, true); //enable the device
            Cursor = Cursors.Default;

            logBox.Items.Add("Холбогдлоо");
        }