public static byte[] ExportToCSV(IEnumerable <MachineType> machinetypes)
{
StringBuilder sb = new StringBuilder();
sb.AppendLine(MachineType.GetCsvHeader());
foreach (MachineType mt in machinetypes)
{
sb.AppendLine(mt.ToCsv());
}
return(Encoding.ASCII.GetBytes(sb.ToString()));
}