C#

public FileInformation(string filename)
{
    FileInfo info = new FileInfo(filename);
    _fileName = info.Name;
    _fileSize = (info.Length / 1024).ToString() + "KB";
    _fileExt = info.Extension.ToUpper();
    _fileDate = info.LastWriteTime;
    _path = info.DirectoryName;

    foreach (DataRow ThisRow in ExtLookUpDS.Tables["ext_look_up"].Rows)
    {
        if (_fileExt == ThisRow[0].ToString().Trim())
        {
            _compFormat = Boolean.Parse(ThisRow[1].ToString().Trim());
            _midiFormat = Boolean.Parse(ThisRow[2].ToString().Trim());
            _audioApp = Boolean.Parse(ThisRow[3].ToString().Trim());
            _desc = ThisRow[4].ToString().Trim();
        }
    }
}

private DataSet dsExtensions;
private DataSet ExtLookUpDS
{
    get
    {
        if (dsExtensions == null)
        {
           dsExtensions = BuildLookups.LoadXmlFile(@"LookUpXML\ext_look_up.xml");
        }
        return dsExtensions;
    }
}

public void AnalyseTheFilePath(string pathtoanalyse)
{
    Regex wordsplitter = new Regex("\\b\\w+\\b",RegexOptions.IgnoreCase);

    foreach (Match pathword in wordsplitter.Matches(pathtoanalyse))
    {
        foreach (DataRow ThisRow in InstrumentsDS.Tables["instrument_lookup"].Rows)
        {
            if (pathword.ToString() == ThisRow[0].ToString().Trim())
            {
                // do stuff with the dictionary.
            }
        }
    }
}

private DataSet dsInstruments;
private DataSet InstrumentsDS
{
    get
    {
        if (dsInstruments == null)
        {
            dsInstruments = BuildLookups.LoadXmlFile(@"LookUpXML\instrument_lookup.xml");
        }
        return dsInstruments;
    }
}

Jammer

Going where everyone here has gone before!