establish log file in system

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Diagnostics;


namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            EventLog log = new EventLog();
            try
            {
                log.Source = "系统2";
                log.WriteEntry("deal with message of one", EventLogEntryType.Information);
                log.WriteEntry("deal with message of two",EventLogEntryType.Information);
                throw new System.IO.FileNotFoundException("readme.txt文件未找到");
            }
            catch(System.IO.FileNotFoundException exception)
            {
                log.WriteEntry("deal with message two",EventLogEntryType.Error);  
            }

        }
    }
}