/// <summary>
/// Stores the data. If the needed files do not exist they will be created.
/// </summary>
public void WriteData()
{
var myfolders = @$"{Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments)}\A3Faming\CSV\";
Directory.CreateDirectory(myfolders);
var file = "Items.csv";
WriteHelper(myfolders + file, Items.ConvertAll(item => (IToStringArray)item));
file = "Vehicles.csv";
WriteHelper(myfolders + file, Vehicles.ConvertAll(vehicle => (IToStringArray)vehicle));
file = "Routes.csv";
WriteHelper(myfolders + file, Routes.ConvertAll(route => (IToStringArray)route));
}