Nigger

Console.WriteLine("Postal Code Checker");
            string postalChecker = @"C:\Users\Student\Desktop\New folder (2)\PostalCodes.txt";
            int counter = 0;
            Regex pattern = new Regex(@"\d{6,6}");
            StreamReader reader = new StreamReader(postalChecker);

            if (File.Exists(postalChecker))
            {
                Console.WriteLine("File Exist");
                while ((postalChecker = reader.ReadLine()) != null)
                {
                    foreach (Match m in pattern.Matches(postalChecker))
                    if(m.Success)
                    {
                        if ((postalChecker.Substring(0,2) == "73") && (postalChecker.Length == 6))
                        {
                            Console.WriteLine(postalChecker);
                            Console.WriteLine("Postal district is: 25");
                            counter++;
                        }
                        else if ((postalChecker.Substring(0, 2) == "72") && (postalChecker.Length == 6))
                            {
                                Console.WriteLine(postalChecker);
                                Console.WriteLine("Postal district is: 25");
                                counter++;
                            }
                        else if ((postalChecker.Substring(0, 2) == "56") && (postalChecker.Length == 6))
                        {
                            Console.WriteLine(postalChecker);
                            Console.WriteLine("Postal district is: 20");
                            counter++;
                        }
                        else if ((postalChecker.Substring(0, 2) == "57") && (postalChecker.Length == 6))
                        {
                                Console.WriteLine(postalChecker);
                                Console.WriteLine("Postal district is: 20");
                                counter++;
                        }
                        else if ((postalChecker.Substring(0, 2) == "75") && (postalChecker.Length == 6))
                        {
                            Console.WriteLine(postalChecker);
                            Console.WriteLine("Postal district is: 27");
                            counter++;
                        }
                        else if ((postalChecker.Substring(0, 2) == "76") && (postalChecker.Length == 6))
                        {
                                Console.WriteLine(postalChecker);
                                Console.WriteLine("Postal district is: 27");
                                counter++;
                        }
                        else
                        {
                            Console.WriteLine(postalChecker);
                            Console.WriteLine("District does not exist!");
                        }