输出文字首个字母拼音

using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Text;
namespace MyText
{
    /**/
    /// <summary>
    /// Class1 的摘要说明。
    /// </summary>
    public class Class1
    {

        static public string GetChineseSpell(string strText)
        {
            int len = strText.Length;
            string myStr = "";
            for (int i = 0; i < len; i++)
            {
                myStr += getSpell(strText.Substring(i, 1));
            }
            return myStr;
        }

        static public string getSpell(string cnChar)
        {
            byte[] arrCN = Encoding.Default.GetBytes(cnChar);
            if (arrCN.Length > 1)
            {
                int area = (short)arrCN[0];
                int pos = (short)arrCN[1];
                int code = (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 (int i = 0; i < 26; i++)
                {
                    int max = 55290;
                    if (i != 25) max = areacode[i + 1];
                    if (areacode[i] <= code && code < max)
                    {
                        return Encoding.Default.GetString(new byte[] { (byte)(65 + i) });
                    }
                }
                return "*";
            }
            else return cnChar;
        }
        public static void Main(string[] args)
        {
            string str = Console.ReadLine();
            Console.WriteLine(Class1.GetChineseSpell(str));
        }
    }
}