小寫金額轉成大寫金額

public string ConventGig(string money)
        {
            //int intTemp = int.Parse(money);
            string strTemp = money.ToString();
            string strValue = "";
            int iLen = strTemp.Length;
            for(int i=0; i<strTemp.Length; i++)
            {
                strValue += sToh(strTemp.Substring(i,1)) + getBit(iLen);
                if(getBit(iLen)!="")
                {
                    if(strValue.Substring(strValue.Length-2,1)=="零" && strValue.Substring(strValue.Length-4,1)=="零")
                        strValue = strValue.Substring(0,strValue.Length-4) + "零";
                }
                else
                {
                    if(strValue.Substring(strValue.Length-1,1)=="零" && strValue.Substring(strValue.Length-3,1)=="零")
                        strValue = strValue.Substring(0,strValue.Length-3);
                }
                iLen--;
            }
            return strValue;
        }

        private string getBit(int ilen)
        {
            string str = "";
            switch(ilen)
            {
                case 2:
                    str = "拾";
                    break;
                case 3:
                    str = "佰";
                    break;
                case 4:
                    str = "仟";
                    break;
                case 5:
                    str = "萬";
                    break;
                case 6:
                    str = "拾";
                    break;
                case 7:
                    str = "佰";
                    break;
                case 8:
                    str = "仟";
                    break;
                case 9:
                    str = "億";
                    break;
            }
            return str;
        }

        小寫轉大寫#region 小寫轉大寫
        private string sToh(string ch)
        {
            string str = "";
            switch(ch)
            {
                case "1":
                    str = "壹";
                    break;
                case "2":
                    str = "貳";
                    break;
                case "3":
                    str = "參";
                    break;
                case "4":
                    str = "肆";
                    break;
                case "5":
                    str = "伍";
                    break;
                case "6":
                    str = "陸";
                    break;
                case "7":
                    str = "柒";
                    break;
                case "8":
                    str = "捌";
                    break;
                case "9":
                    str = "玖";
                    break;
                default:
                    str = "零";
                    break;
            }
            return str;
        }
        #endregion