1.請問c#中如何將十進(jìn)制數(shù)的字符串轉(zhuǎn)化成十六進(jìn)制數(shù)的字符串//十進(jìn)制轉(zhuǎn)二進(jìn)制Console.WriteLine("十進(jìn)制166的二進(jìn)制表示: "+Convert.ToString(166, 2));//十進(jìn)制轉(zhuǎn)八進(jìn)制Console.WriteLine("十進(jìn)制166的八進(jìn)制表示: "+Convert.ToString(166, 8));//十進(jìn)制轉(zhuǎn)十六進(jìn)制Console.WriteLine("十進(jìn)制166的十六進(jìn)制表示: "+Convert.ToString(166, 16));    //二進(jìn)制轉(zhuǎn)十進(jìn)制Console.WriteLine("二進(jìn)制 111101 的十進(jìn)制表示: "+Convert.ToInt32("111101", 2));//八進(jìn)制轉(zhuǎn)十進(jìn)制Console.WriteLine("八進(jìn)制 44 的十進(jìn)制表示: "+Convert.ToInt32("44", 8));//十六進(jìn)制轉(zhuǎn)十進(jìn)制Console.WriteLine("十六進(jìn)制 CC的十進(jìn)制表示: "+Convert.ToInt32("CC", 16));

2.在串口通訊過程中，經(jīng)常要用到 16進(jìn)制與字符串、字節(jié)數(shù)組之間的轉(zhuǎn)換//

PRivate string StringToHexString(string s,Encoding encode)        {            byte[] b = encode.GetBytes(s);//按照指定編碼將string編程字節(jié)數(shù)組            string result = string.Empty;            for (int i = 0; i < b.Length; i++)//逐字節(jié)變?yōu)?6進(jìn)制字符，以%隔開            {                result += "%"+Convert.ToString(b[i], 16);            }            return result;        }        private string HexStringToString(string hs, Encoding encode)        {            //以%分割字符串，并去掉空字符            string[] chars = hs.Split(new char[]{'%'},StringSplitOptions.RemoveEmptyEntries);            byte[] b = new byte[chars.Length];            //逐個字符變?yōu)?6進(jìn)制字節(jié)數(shù)據(jù)            for (int i = 0; i < chars.Length; i++)            {                b[i] = Convert.ToByte(chars[i], 16);            }            //按照指定編碼將字節(jié)數(shù)組變?yōu)樽址?nbsp;           return encode.GetString(b);        }

///<summary>        /// 從16進(jìn)制轉(zhuǎn)換成漢字        /// </summary>        /// <param name="hex"></param>        /// <param name="charset">編碼,如"utf-8","gb2312"</param>       /// <returns></returns>        public static string UnHex(string hex, string charset)        {           if (hex == null)                throw new ArgumentNullException("hex");             hex = hex.Replace(",", "");             hex = hex.Replace("/n", "");             hex = hex.Replace("//", "");             hex = hex.Replace(" ", "");            if (hex.Length % 2 != 0)            {                 hex += "20";//空格             }            // 需要將 hex 轉(zhuǎn)換成 byte 數(shù)組。             byte[] bytes = new byte[hex.Length / 2];           for (int i = 0; i < bytes.Length; i++)            {                try                {                    // 每兩個字符是一個 byte。                      bytes[i] = byte.Parse(hex.Substring(i * 2, 2),                     System.Globalization.NumberStyles.HexNumber);                 }                catch                {                    // Rethrow an exception with custom message.                     throw new ArgumentException("hex is not a valid hex number!", "hex");                 }             }             System.Text.Encoding chs = System.Text.Encoding.GetEncoding(charset);            return chs.GetString(bytes);         }