StackOverflowQuestion50735770.cs

void Main()
{
	using (var stream = new MemoryStream())
	using (var writer = new StreamWriter(stream))
	using (var reader = new StreamReader(stream))
	using (var csv = new CsvReader(reader))
	{
		writer.WriteLine("X,Y,Z");
		writer.WriteLine("1.23e-15,2.34e-15,3.45e-15");
		writer.Flush();
		stream.Position = 0;
		
		csv.Configuration.RegisterClassMap<Point3DMap>();
		csv.GetRecords<Point3D>().ToList().Dump();
	}
}

public class Point3D
{
	public decimal X { get; set; }	
	public decimal Y { get; set; }	
	public decimal Z { get; set; }
}

public class Point3DMap : ClassMap<Point3D>
{
	public Point3DMap()
	{
		Map(m => m.X).Index(0).TypeConverterOption.NumberStyles(NumberStyles.Float);
		Map(m => m.Y).Index(1).TypeConverterOption.NumberStyles(NumberStyles.Float);
		Map(m => m.Z).Index(2).TypeConverterOption.NumberStyles(NumberStyles.Float);
	}
}