C#

public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
            
        }
        private static string Header = @"^(D|""D|T|S|I|E|""Z)";
        private static string Blank = @"^$";
        private static string Total = @"^""To";
        private static string Sum = @"^""\d\d/\d\d/\d\d\d\d"","""",";
        private static string NewData = @"^""\d\d/\d\d/\d\d\d\d"",";
        private static string Data = @"^"""",""\w";
        private string[] SourceFiles = new string[100];
        private int FileCount;
        public string WkgDirectory;
        public DataSet MeterReads = new DataSet();
        public Regex RgxHeader = new Regex(Header);
        public Regex RgxData = new Regex(Data);
        public Regex RgxNewData = new Regex(NewData);
        public Regex RgxTotal = new Regex(Total);
        public Regex RgxBlank = new Regex(Blank);
        public Regex RgxSum = new Regex(Sum);
        public Queue<string> OutQueue = new Queue<string>();
        
        

        private int Classify(string s)
        {
            Match m;
            m= RgxHeader.Match(s);
            if (m.Success) return 0;    //Type 0 is a header line
            m= RgxBlank.Match(s);
            if (m.Success) return 1;    //Type 1 is a blank line
            m= RgxTotal.Match(s);
            if (m.Success) return 2;    //Type 2 is a totals line
            m= RgxSum.Match(s);
            if (m.Success) return 3;    //Type 3 is a summation line
            m= RgxData.Match(s);
            if (m.Success) return 4;    //Type 4 is a data line to save
            m= RgxNewData.Match(s);
            if (m.Success) return 5;    //Type 5 is a data line to save
            return 99;                  //Bad data
        }