using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace CsvTest
{
class Program
{
static void Main(string[] args)
{
FileStream fs = File.OpenWrite("D:\\test.csv");
StreamWriter sw = new StreamWriter(fs);
sw.WriteLine(((char)(9)).ToString() +"012345");
sw.Close();
}
}
}