public class MyClass
{
    public uint ID { get; set; }
    public List<double> Values { get; set; }
}

List<MyClass> objects = new List<MyClass>();

var query = objects.Select(o => new { o.ID, o.Values } ).ToList(); // this example returns only ID field

public DataTable ConvertToDataTable<T>(IList<T> data)
{
    DataTable table = new DataTable();
    PropertyDescriptorCollection properties = TypeDescriptor.GetProperties(typeof(T));

    foreach (PropertyDescriptor prop in properties)
        table.Columns.Add(prop.Name, Nullable.GetUnderlyingType(prop.PropertyType) ?? prop.PropertyType);

        foreach (T item in data)
        {
            DataRow row = table.NewRow();

            foreach (PropertyDescriptor prop in properties)
                row[prop.Name] = prop.GetValue(item) ?? DBNull.Value;

            table.Rows.Add(row);
        }

        return table;
    }