汉字获取首字母拼音

//获取字典

        private Dictionary<string, string> LoadPinYin(HttpContext context)

        {

            string link = context.Request.QueryString["link"];

            Dictionary<string, string> dic = new Dictionary<string, string>();

            DataTable dt = GetData();//获取数据库数据

            foreach (DataRow row in dt.Rows)

            {

                if (row["idsName"].ToString() == "" || row["idsName"].ToString() == "其它") continue;

                string pinyin = ChineseCap(row["idsName"].ToString().Substring(0, 1));

                if (dic.ContainsKey(pinyin))

                {

                    dic[pinyin] += string.Format("<a href='{1}' title='{2}'>{0}</a>", clsCommon.leftx(row["idsName"].ToString(), 10), Global.RewriteStaticUrl(link + "?idsid=" + row["idsID"].ToString()), row["idsName"].ToString());

                }

                else

                {

                    dic.Add(pinyin, string.Format("<a href='{1}' title='{2}'>{0}</a>", clsCommon.leftx(row["idsName"].ToString(), 10), Global.RewriteStaticUrl(link + "?idsid=" + row["idsID"].ToString()), row["idsName"].ToString()));

                }

            }



            return dic;

        }



        //转换

        public string ChineseCap(string ChineseStr)

        {

            string Capstr = string.Empty;

            byte[] ZW = new byte[2];

            long ChineseStr_int;

            string CharStr, ChinaStr = "";

            for (int i = 0; i <= ChineseStr.Length - 1; i++)

            {

                CharStr = ChineseStr.Substring(i, 1).ToString();

                ZW = System.Text.Encoding.Default.GetBytes(CharStr);

                // 得到汉字符的字节数组

                if (ZW.Length == 2)

                {

                    int i1 = (short)(ZW[0]);

                    int i2 = (short)(ZW[1]);

                    ChineseStr_int = i1 * 256 + i2;



                    if ((ChineseStr_int >= 45217) && (ChineseStr_int <= 45252))

                    {

                        ChinaStr = "A";

                    }

                    else if ((ChineseStr_int >= 45253) && (ChineseStr_int <= 45760))

                    {

                        ChinaStr = "B";

                    }

                    else if ((ChineseStr_int >= 45761) && (ChineseStr_int <= 46317))

                    {

                        ChinaStr = "C";

                    }

                    else if ((ChineseStr_int >= 46318) && (ChineseStr_int <= 46825))

                    {

                        ChinaStr = "D";

                    }

                    else if ((ChineseStr_int >= 46826) && (ChineseStr_int <= 47009))

                    {

                        ChinaStr = "E";

                    }

                    else if ((ChineseStr_int >= 47010) && (ChineseStr_int <= 47296))

                    {

                        ChinaStr = "F";

                    }

                    else if ((ChineseStr_int >= 47297) && (ChineseStr_int <= 47613))

                    {

                        ChinaStr = "G";

                    }

                    else if ((ChineseStr_int >= 47614) && (ChineseStr_int <= 48118))

                    {



                        ChinaStr = "H";

                    }

                    else if ((ChineseStr_int >= 48119) && (ChineseStr_int <= 49061))

                    {

                        ChinaStr = "J";

                    }

                    else if ((ChineseStr_int >= 49062) && (ChineseStr_int <= 49323))

                    {

                        ChinaStr = "K";

                    }

                    else if ((ChineseStr_int >= 49324) && (ChineseStr_int <= 49895))

                    {

                        ChinaStr = "L";

                    }

                    else if ((ChineseStr_int >= 49896) && (ChineseStr_int <= 50370))

                    {

                        ChinaStr = "M";

                    }



                    else if ((ChineseStr_int >= 50371) && (ChineseStr_int <= 50613))

                    {

                        ChinaStr = "N";



                    }

                    else if ((ChineseStr_int >= 50614) && (ChineseStr_int <= 50621))

                    {

                        ChinaStr = "O";

                    }

                    else if ((ChineseStr_int >= 50622) && (ChineseStr_int <= 50905))

                    {

                        ChinaStr = "P";



                    }

                    else if ((ChineseStr_int >= 50906) && (ChineseStr_int <= 51386))

                    {

                        ChinaStr = "Q";



                    }

                    else if ((ChineseStr_int >= 51387) && (ChineseStr_int <= 51445))

                    {

                        ChinaStr = "R";

                    }

                    else if ((ChineseStr_int >= 51446) && (ChineseStr_int <= 52217))

                    {

                        ChinaStr = "S";

                    }

                    else if ((ChineseStr_int >= 52218) && (ChineseStr_int <= 52697))

                    {

                        ChinaStr = "T";

                    }

                    else if ((ChineseStr_int >= 52698) && (ChineseStr_int <= 52979))

                    {

                        ChinaStr = "W";

                    }

                    else if ((ChineseStr_int >= 52980) && (ChineseStr_int <= 53640))

                    {

                        ChinaStr = "X";

                    }

                    else if ((ChineseStr_int >= 53689) && (ChineseStr_int <= 54480))

                    {

                        ChinaStr = "Y";

                    }

                    else if ((ChineseStr_int >= 54481) && (ChineseStr_int <= 55289))

                    {

                        ChinaStr = "Z";

                    }

                }

                else

                {

                    Capstr = ChineseStr;

                    break;

                }

                Capstr = Capstr + ChinaStr;

            }

            return Capstr;

        }