View difference between Paste ID: Yz1ahPd0 and f9Y0fCR2

 using System;
 using System.Collections.Generic;
 using System.IO;
 using System.Linq;
 using System.Net;
 using System.Net.Sockets;
 using System.Text;
 
 namespace ConsoleApplication2
 {
     class Program
     {
         static void Main(string[] args)
         {
             var hostfile = "";
             var OSInfo = Environment.OSVersion;
             string pathpart = "hosts";
             if (OSInfo.Platform == PlatformID.Win32NT)
             {
                 //is windows NT
-                pathpart = @"system32\drivers\etc\hosts";
+                pathpart = "system32\\drivers\\etc\\hosts";
             }
             hostfile = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.Windows), pathpart);
 
             if (!File.ReadAllLines(hostfile).Contains("123.123.123.123 download.talesrunner.com"))
             {
                 File.AppendAllLines(hostfile, new String[] { "123.123.123.123 download.talesrunner.com" });
             }
 
             Console.ReadLine();
         }
     }
 }