【.NET / C#】HexConverter

using System;using System.Collections.Generic;using System.Text;using System.Text.RegularExpressions;namespace System{    /// <summary> 十六进制 转换器 </summary>    public class HexConverter    {        private const int RADIX = 16;        private static readonly Regex PATTERN = new Regex("([0123456789ABCDEF]{2})+", RegexOptions.IgnoreCase);        private static byte[] OutputBytes(string hex)        {            var list = new List<byte>();            foreach (Match match in PATTERN.Matches(hex))            {                foreach (Capture capture in match.Groups[1].Captures)                {                    list.Add(Convert.ToByte(capture.Value, RADIX));                }            }            return list.ToArray();        }        private static string OutputHexString(byte[] bits, string separator)        {            var result = new StringBuilder();            for (var i = 0; i < bits.Length; i++)            {                if (0 != i) result.Append(separator ?? string.Empty);                result.Append(bits[i].ToString("X2"));            }            return result.ToString();        }        #region 10 进制 -> 16 进制        /// <summary> String -> Hex String </summary>        public static string GetHex(string str, string separator = null)        {            return GetHex(str, Encoding.Default, separator);        }        /// <summary> String -> Hex String </summary>        public static string GetHex(string str, Encoding encode, string separator = null)        {            if (!string.IsNullOrEmpty(separator))            {                str = str.Replace(separator, string.Empty);            }            var bits = encode.GetBytes(str);            return OutputHexString(bits, separator);        }        /// <summary> Byte -> Hex String </summary>        public static string GetHex(byte bit)        {            return bit.ToString("X2");        }        /// <summary> Byte[] -> Hex String </summary>        public static string GetHex(byte[] bits, string separator = null)        {            return "-" == separator ? BitConverter.ToString(bits) : BitConverter.ToString(bits).Replace("-", separator ?? string.Empty);        }        #endregion        #region 16 进制 -> 10 进制        /// <summary> Hex String -> Byte[] </summary>        public static byte[] GetBytes(string hex, string separator = null)        {            if (string.IsNullOrEmpty(separator))            {                return OutputBytes(hex);            }            else            {                var temp = hex.Split(separator);                var result = new byte[temp.Length];                for (var i = 0; i < temp.Length; i++)                {                    result[i] = Convert.ToByte(temp[i], RADIX);                }                return result;            }        }        /// <summary> Hex String -> String </summary>        public static string ToString(string hex, string separator = null)        {            return ToString(hex, Encoding.Default, separator);        }        /// <summary> Hex String -> String </summary>        public static string ToString(string hex, Encoding encode, string separator = null)        {            if (!string.IsNullOrEmpty(separator))            {                hex = hex.Replace(separator, string.Empty);            }            var data = OutputBytes(hex);            return encode.GetString(data);        }        #endregion    }}