public void UpdateBoothPairing(string com_port, string booth_label)
        {
            var pairing = BoothPairings.Where(x => x.ComPort.Equals(com_port)).FirstOrDefault();

            if (pairing != null)
            {
                //If the booth pairing already exists in our collection, let's update it.
                pairing.BoothLabel  = booth_label;
                pairing.LastUpdated = DateTime.Now;
            }
            else
            {
                //Otherwise, create a new booth pairing to be stored.
                BoothPairing new_pairing = new BoothPairing(booth_label, com_port, DateTime.Now);
                BoothPairings.Add(new_pairing);
            }
        }
        public void ReadBoothPairings()
        {
            string booth_pairings_file_name = _booth_pairings_file_name;

            FileInfo booth_pairings_file_info = new FileInfo(booth_pairings_file_name);

            if (booth_pairings_file_info.Exists)
            {
                //Open a stream to read the booth pairings configuration file
                try
                {
                    //Load the configuration file
                    List <string> lines = TxBDC_Common.ConfigurationFileLoader.LoadConfigurationFile(booth_pairings_file_name);

                    //Now parse the input
                    for (int i = 0; i < lines.Count; i++)
                    {
                        string   thisLine    = lines[i];
                        string[] splitString = thisLine.Split(new char[] { ',' }, 4);

                        string   booth_name   = splitString[0].Trim();
                        string   com_port     = splitString[1].Trim();
                        DateTime last_updated = DateTime.MinValue;

                        //Parse out the "last updated" date and time if it exists
                        if (splitString.Length >= 3)
                        {
                            string last_updated_string = splitString[2].Trim();
                            last_updated = DateTime.Parse(last_updated_string);
                        }

                        //Instantiate a booth pairing object
                        BoothPairing pairing = new BoothPairing(booth_name, com_port, last_updated);

                        //Add the booth pairing to our set
                        BoothPairings.Add(pairing);
                    }
                }
                catch
                {
                    //empty
                }
            }
        }