socket通訊中需要用到的一些資料類型轉換的方法

     在上次做的項目中，使用到了Socket進行資料通訊，其中用到了一些資料類型進行轉換的方法，現在

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 /// <summary>
        /// 整數轉為Byte【】
        /// 低位在前，高位在後
        /// </summary>
        /// <param name="r">要轉換的整數</param>
        /// <param name="digits">Byte位元</param>
        /// <returns></returns>
        private static byte[] GetBytesFromInt(int r, int digits)
        {
            byte[] bt = new byte[digits];
            int j=8;
            for (int k = 0; k < digits; k++)
            {
                j=8*k;
                bt[k]=(byte)(r>>j);
            }
            return bt;
        }
     
        /// <summary>
        /// 將字元轉換為Byte數組
        /// </summary>
        /// <param name="s"></param>
        /// <returns></returns>
        private static byte[] GetBytesFromStr(string s)
        {
            byte[] bt = Encoding.UTF8.GetBytes(s);
            return bt;
        }
        /// <summary>
        /// 計算字元傳編碼時的位元組長度
        /// </summary>
        /// <param name="s"></param>
        /// <returns></returns>
        private static int GetBytesLengthFromStr(string s)
        {
            int iLength = Encoding.UTF8.GetByteCount(s);
            return iLength;
        }

        /// <summary>
        /// 將Byte數組轉化為Int16
        /// </summary>
        /// <param name="bt"></param>
        /// <param name="index"></param>
        /// <returns></returns>
        private static Int16 GetInt16FromBytes(byte[] bt)
        {
            Int16 s = BitConverter.ToInt16(bt,0);
            return s;
        }

        /// <summary>
        /// 將Byte數組轉化為Int32
        /// </summary>
        /// <param name="bt"></param>
        /// <param name="index"></param>
        /// <returns></returns>
        private static int GetIntFromBytes(byte[] bt)
        {
            int s = BitConverter.ToInt32(bt, 0);
            return s;
        }

        /// <summary>
        /// 將Byte數組轉化為String
        /// </summary>
        /// <param name="bt"></param>
        /// <param name="index"></param>
        /// <returns></returns>
        private static string GetStrFromBytes(byte[] bt)
        {
            string s = BitConverter.ToString(bt, 0);
            return s;
        }