void Main()
{
	var records = new List<dynamic>();
	
	dynamic record = new ExpandoObject();
	record.Id = 1;
	record.Name = "one";
	records.Add(record);
	
	using (var writer = new StringWriter())
	using (var csv = new CsvWriter(writer, CultureInfo.InvariantCulture))
	{
		csv.WriteRecords(records);
		
		writer.ToString().Dump();
	}
}

Id,Name
1,one