CSV to object model mapping

For the specific data shown in your question…

var yourData = File.ReadAllLines("yourFile.csv")
                   .Skip(1)
                   .Select(x => x.Split(','))
                   .Select(x => new
                                {
                                    Plant = x[0],
                                    Material = x[1],
                                    Density = double.Parse(x[2]),
                                    StorageLocation = int.Parse(x[3])
                                });

If you already have a type declared for your data then you can use that rather than the anonymous type.

Note that this code isn’t robust at all. It won’t correctly handle values containing commas/newlines etc, quoted string values, or any of the other esoteric stuff that is often found in CSV files.