C# Unicode (\uxxxx) 和 中文 變數互轉

資料來源:http://trufflepenne.blogspot.com/2013/03/cunicode.html

    GOOGLE: C#  \uXXXX

        https://www.cnblogs.com/netlog/p/15911016.html C#字符串Unicode转义序列编解码
        https://docs.microsoft.com/zh-tw/dotnet/api/system.text.regularexpressions.regex.unescape?view=net-6.0

https://www.cnblogs.com/sntetwt/p/11218087.html [C# 將非英數字轉成UNICODE]

Code

        //---
        //單純只針對非英數字(中文字)部分轉Unicode編碼
        static string StringToUnicode(string text)
        {
            //https://www.cnblogs.com/sntetwt/p/11218087.html
            string result = "";
            for (int i = 0; i < text.Length; i++)
            {
                if ((int)text[i] > 32 && (int)text[i] < 127)
                {
                    result += text[i].ToString();
                }
                else
                    result += string.Format("\\u{0:x4}", (int)text[i]);
            }
            return result;
        }
        //---單純只針對非英數字(中文字)部分轉Unicode編碼

        /*使用範例        
            Console.WriteLine(StringToUnicode("廖"));
            //UTF-8 轉中文
            String result00 = string.Format(@"\u"+"{0:x4}", 24278);
            String result01 = "\u5ed6";

            String StrBuf00 = UnescapeUnicode(result00+"jashliao中文1234");
            String StrBuf01 = StringToUnicode(result01);

            Console.Write(UnicodeToString(StrBuf01));
        */
        static string StringToUnicode(string srcText)
        {
            //http://trufflepenne.blogspot.com/2013/03/cunicode.html
            string dst = "";
            char[] src = srcText.ToCharArray();
            for (int i = 0; i < src.Length; i++)
            {
                byte[] bytes = Encoding.Unicode.GetBytes(src[i].ToString());
                string str = @"\u" + bytes[1].ToString("X2") + bytes[0].ToString("X2");
                dst += str;
            }
            return dst;
        }

        static string UnicodeToString(string srcText)
        {
            //http://trufflepenne.blogspot.com/2013/03/cunicode.html
            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;
        }

        public static string UnescapeUnicode(string str)  // 将unicode转义序列(\uxxxx)解码为字符串
        {
            //GOOGLE: C#  \uXXXX
            //https://www.cnblogs.com/netlog/p/15911016.html C#字符串Unicode转义序列编解码
            //https://docs.microsoft.com/zh-tw/dotnet/api/system.text.regularexpressions.regex.unescape?view=net-6.0

            return (System.Text.RegularExpressions.Regex.Unescape(str));
        }