C # get string first character letter (uppercase)

        /// <summary>        ///gets the string first character letter (uppercase);/// </summary>        /// <param name= "Cnchar" ></param>        /// <returns></returns>         Public stringGetstringfirstspell (stringCnchar) {            //return "*" except for letters, numbers, and kanji            varresult ="*"; if(string. IsNullOrEmpty (Cnchar.trim ()))returnresult; Cnchar= Cnchar.trim (). Substring (0,1); byte[] Arrcn =Encoding.Default.GetBytes (Cnchar); //The first word is a character and takes up one byte            if(Arrcn.length <=1)            {                //Uppercase English Letters                if(( Short) arrcn[0] >= $&& ( Short) arrcn[0] <= -)                    returnCnchar; //Lowercase English letters                if(arrcn[0] >= the&& arrcn[0] <=122)                    returnEncoding.Default.GetString (New byte[] { (byte)(( Short) arrcn[0] - +) }); //Digital                Switch(Cnchar) { Case "1": Result="Y";  Break;  Case "2": Result="E";  Break;  Case "3":                     Case "4": Result="S";  Break;  Case "5": Result="W";  Break;  Case "0":                     Case "6": Result="L";  Break;  Case "7": Result="Q";  Break;  Case "8": Result="B";  Break;  Case "9": Result="J";  Break; }                returnresult; }            //The first character is a Chinese character, accounting for two bytes            Else            {                intArea = ( Short) arrcn[0]; intpos = ( Short) arrcn[1]; intCode = (Area <<8) +POS; int[] AreaCode = {45217,45253,45761,46318,46826,47010,47297,47614,48119,48119,49062,49324,49896,50371,50614,50622,50906,51387,51446,52218,52698,52698,52698,52980,53689,54481 };  for(inti =0; I < -; i++)                {                    intMax =55290; if(I! = -) max = Areacode[i +1]; if(Areacode[i] <= code && Code <max) {                        returnEncoding.Default.GetString (New byte[] { (byte)( $+i)}); }                }                returnresult; }        }

Sometimes it is necessary to obtain the initials of Chinese characters, which can be used in the above method.

C # get string first character letter (uppercase)