Conversion between C# Unicode and Chinese characters

        /// <summary>
        /// <summary>
        /// 字符串转Unicode
        /// </summary>
        /// <param name="source">源字符串</param>
        /// <returns>Unicode编码后的字符串</returns>
        public static string StringToUnicode(string _sourceStr)
        {
            byte[] bytes = Encoding.Unicode.GetBytes(_sourceStr);
            StringBuilder stringBuilder = new StringBuilder();
            for (int i = 0; i < bytes.Length; i += 2)
            {
                stringBuilder.AppendFormat("\\u{0}{1}", bytes[i + 1].ToString("x").PadLeft(2, '0'), bytes[i].ToString("x").PadLeft(2, '0'));
            }
            return stringBuilder.ToString();
        }

        /// <summary>
        /// Unicode to string
        /// </summary>
        /// <param name="source">Unicode-encoded string</param>
        /// <returns>normal string </returns>
        public static string Unicode2String(string _sourceStr)
        {
            return new Regex(@"\\u([0-9A-F]{4})", RegexOptions.IgnoreCase | RegexOptions.Compiled).Replace(
                _sourceStr, x => string.Empty + Convert.ToChar(Convert.ToUInt16(x.Result("$1"), 16)));
        }