Large Files

namespace CSConsole
{
    public class Program
    {
        public static void Main()
        {
            //calling the function for asccii file with 500 bytes of size
            ReadBinaryFile("C:\\Temp\\sth.txt", Encoding.ASCII, 500);
        }
 
        private static void ReadBinaryFile(string path, Encoding encoding, int bufferSize)
        {
            try
            {
                byte[] buffer = new byte[bufferSize];
                string line, whole, halfLine = string.Empty;
                using (FileStream fileStream = File.Open(path, FileMode.Open, FileAccess.Read))
                {
                    while (fileStream.Position < fileStream.Length)
                    {
                        int len = fileStream.Read(buffer, 0, buffer.Length);
                        whole = encoding.GetString(buffer, 0, len);
 
                        string[] lines = whole.Replace("
", "\n").Split('\n');
                        int lineCount = lines.Length;
 
                        if (halfLine != null)
                            lines[0] = halfLine + lines[0];
 
                        if (buffer[len - 1] != 10)
                        {
                            halfLine = lines[lines.Length - 1];
                            lineCount--;
                        }
                        else
                        {
                            halfLine = null;
                        }
 
                        for (int i = 0; i < lineCount; i++)
                        {
                            //YOUR CODE GOES HERE. NO NEED TO CHANGE ANYTHING ELSE!!!
                            ProcessLine(lines[i]);
                        }
                    }
                }
            }
            catch (Exception ex)
            {
                //ERROR!!
            }
        }
 
        private static int globalLine = 0;
        private static void ProcessLine(string line)
        {
            Console.WriteLine(globalLine + ". " + line);
            globalLine++;
        }
    }
}