Convert Hex To Binary By DreamVB

hex2bin.cs

using System;
using System.Text;
using System.IO;

namespace bin2hex
{
    class Program
    {
        private static bool _abort = false;

        private static void HexToBinary(string lzInput , string lzOutput)
        {
            string Buffer = string.Empty;
            string sHex = string.Empty;
            FileInfo fi = null;
            int I = 0;
            int bcode = 0;

            try
            {
                fi = new FileInfo(lzInput);

                using (StreamReader sr = new StreamReader(File.OpenRead(lzInput)))
                {
                    //Read the file.
                    Buffer = sr.ReadToEnd();
                    //Close file
                    sr.Close();
                }

                //Remove whitespace.
                Buffer = Buffer.Replace(" ", "");
                Buffer = Buffer.Replace("\r", "");
                Buffer = Buffer.Replace("\n", "");
                Buffer = Buffer.Trim();

            }
            catch (Exception e)
            {
                Console.WriteLine(e.Message);
                _abort = true;
                return;
            }

            try
            {
                using (StreamWriter sw=new StreamWriter(File.OpenWrite(lzOutput)))
                {
                    //Convert and write to file.
                    for (I = 0; I < Buffer.Length;I+=2)
                    {
                        //output binary value.
                        sHex = Buffer.Substring(I, 2);
                        //Convert hex to byte
                        bcode = int.Parse(sHex, System.Globalization.NumberStyles.HexNumber);
                        //Write char to file.
                        sw.BaseStream.WriteByte((byte)bcode);
                    }
                    //Close file.
                    sw.Close();
                }
            }
            catch(Exception err)
            {
                Console.WriteLine(err.Message);
                _abort = true;
                return;
            }
        }

        static int Main(string[] args)
        {
            if (args.Length != 2)
            {
                Console.WriteLine("Incorrect syntext.");
                return 0;
            }

            //Convert file to binary
            HexToBinary(args[0], args[1]);

            //StringBuilder sb = BinaryToHex(args[0]);
            if (_abort) { return 0; }

            return 1;
        }
    }
}