public static string ToPY(this string str)
        {
            string temp = string.Empty;
            foreach (char i in str)
            {
                try
                {
                    ChineseChar chineseChar = new ChineseChar(i);
                    string t = chineseChar.Pinyins[0].ToString();
                    temp += t.Substring(0, t.Length - 1);
                }
                catch
                {
                    temp += i.ToString();
                }
            }
            return temp;
        }

        public static string ToShortPY(this string str)
        {
            string temp = string.Empty;
            foreach (char i in str)
            {
                try
                {
                    ChineseChar chineseChar = new ChineseChar(i);
                    string t = chineseChar.Pinyins[0].ToString();
                    temp += t.Substring(0, 1);
                }
                catch
                {
                    temp += i.ToString();
                }
            }
            return temp;
        }