C#字符串与unicode互相转换

        /// <summary>
        /// 字符串转Unicode 直接Byte的方式，单字节操作
        /// </summary>
        /// <param name="source">源字符串</param>
        /// <returns>Unicode编码后的字符串</returns>
        public static string StringToUnicode(string source)
        {
            var bytes = Encoding.Unicode.GetBytes(source);
            var stringBuilder = new StringBuilder();
            for (var i = 0; i < bytes.Length; i += 2)
            {     
                stringBuilder.AppendFormat("\u{0:x2}{1:x2}", bytes[i + 1], bytes[i]);
            }
            return stringBuilder.ToString();
        }

        /// <summary>  
        /// 字符串转为UniCode码字符串    通过Char的方式，一个Char为两个字节
        /// </summary>  
        /// <param name="s"></param>  
        /// <returns></returns>  
        public static string StringToUnicode(string s)
        {
            char[] charbuffers = s.ToCharArray();
            byte[] buffer;
            StringBuilder sb = new StringBuilder();
            for (int i = 0; i < charbuffers.Length; i++)
            {
                buffer = System.Text.Encoding.Unicode.GetBytes(charbuffers[i].ToString());
                sb.Append(String.Format("\u{0:X2}{1:X2}", buffer[1], buffer[0]));
            }
            return sb.ToString();
        }

        /// <summary>  
        /// Unicode字符串转为正常字符串  例如：1的Unicode为 u0031
        /// </summary>  
        /// <param name="srcText"></param>  
        /// <returns></returns>  
        public static string UnicodeToString(string srcText)
        {
            string dst = "";
            string src = srcText;
            int len = srcText.Length / 6;
            for (int i = 0; i <= len - 1; i++)
            {
                string str = "";
                str = src.Substring(0, 6).Substring(2);
                src = src.Substring(6);
                byte[] bytes = new byte[2];
                bytes[1] = byte.Parse(int.Parse(str.Substring(0, 2), System.Globalization.NumberStyles.HexNumber).ToString());
                bytes[0] = byte.Parse(int.Parse(str.Substring(2, 2), System.Globalization.NumberStyles.HexNumber).ToString());
                dst += Encoding.Unicode.GetString(bytes);
            }
            return dst;
        }

测试环境：https://try.dot.net/

转自 https://blog.csdn.net/u011511086/article/details/72865006/