Trying to access list outside the scope

string[] fileEntries = Directory.GetFiles(Gpath.selectedPath);
            Console.WriteLine(Gpath.selectedPath);
            //Console.WriteLine("HI");
            foreach (string fileName in fileEntries)
            {
                using (StreamReader reader = File.OpenText(fileName))
                {
                    string line = "";
                    string rline = "";
                    while ((line = reader.ReadLine()) != null)
                    {
                        if (line.Trim().StartsWith("<Path>"))
                        {
                            rline = line;
                            //Console.WriteLine(rline);
                            break;
                        }
                    }
                    //Console.WriteLine(rline);
                    rline = rline.ToLower();
                    string[] sep = { ",", "<", ">", "/", "", "scenario" };
                    string[] sline = rline.Split(sep, StringSplitOptions.RemoveEmptyEntries);
                    foreach (string value in sline)
                    {
                        //int i = 0;
                        temp_list.Add(value);
                        //temp_list.Insert(i,value);
                        //i++;
                    }
                }
            }
            temp_list = temp_list.Distinct().ToList();
           // Console.WriteLine(temp_list);
            //temp_list=string.Join("",temp_list);
            // Console.Write(string.Join(",",temp_list));
           // display_topology(temp_list);
            Console.WriteLine("All available topologies");
            for (int i = 1; i < temp_list.Count; i++)
            {
                Console.WriteLine(i.ToString() + "." + temp_list[i]);
                //display_topology(temp_list);
                //temp_list[i];
            }
            //temp_list[i];
           }