Will I be able to call my log successfully? I cant try it for he time being do advise thanks

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Data.SqlClient;
using System.Data;
using System.IO;

namespace ExportDataTableApplication
{
    class ExportDataTable
    {
        DateTime datetime = DateTime.Now;
        //Execute stored procedure
        static void Main(string[] args)
        {
            Console.WriteLine("Running App");

            DataSet ds = new DataSet();
            DateTime datetime = DateTime.Now;

            using (SqlConnection conn = new SqlConnection("Test connection string"))
            {

                SqlCommand sqlComm = new SqlCommand("Test", conn);

                sqlComm.CommandType = CommandType.StoredProcedure;

                SqlDataAdapter da = new SqlDataAdapter(sqlComm);

                da.Fill(ds);

            }
            //create csv file
            StreamWriter sw = null;
            StringBuilder sb = new StringBuilder();

            foreach (DataTable dt in ds.Tables)
            {

                sw = new StreamWriter(string.Format(@"C:\Users\Desktop\ConsoleApplication2\ConsoleApplication2\CSV File\Export{0}" + datetime.ToString("dd-MM-yyyy_hh-mm-ss") + ".csv", dt.TableName));

                // Write data table columns
                int iColCount = dt.Columns.Count;

                for (int i = 0; i < iColCount; i++)
                {
                    sw.Write(dt.Columns[i]);
                    if (i < iColCount - 1)
                    {
                        sw.Write(",");
                    }
                }

                sw.Write(sw.NewLine);

                // Write all data table rows.
                foreach (DataRow dr in dt.Rows)
                {
                    for (int i = 0; i < iColCount; i++)
                    {
                        if ((!Convert.IsDBNull(dr[i])) && (i == 7))
                        {
                            sw.Write(dr[i].ToString().Replace("\r", " "));
                        }
                        else
                        {
                            sw.Write(dr[i].ToString().Replace(",", " "));
                        }

                        if (i < iColCount - 1)
                        {
                            sw.Write(",");
                        }
                    }

                    sw.Write(sw.NewLine);
                }

                sw.Close();
            }
            ExportDataTable program = new ExportDataTable();
            program.log(" ");

            Console.WriteLine("App ran successfully");
        }

        //Create log file

        public void log(String message)
        {

            String oFileName = @"C:\Users\Desktop\ConsoleApplication2\ConsoleApplication2\Log\Log_" + datetime.ToString("dd-MM-yyyy_hh-mm-ss") + ".txt";
            if (!File.Exists(oFileName))
            {
                System.IO.FileStream f = File.Create(oFileName);
                f.Close();
            }

            try
            {
                System.IO.StreamWriter writter = File.AppendText(oFileName);
                writter.WriteLine(datetime.ToString("dd-MM-yyyy_hh-mm-ss") + " > " + message );
                writter.Flush();
                writter.Close();
            }

            catch (Exception e)
            {
                Console.WriteLine(e.Message.ToString());
            }
        }

    }

}