ASP.NET（C#）将汉字数字转换成阿拉伯数字

    struct Number
    {
        public int this[char c]
        {
            get
            {
                switch (c)
                {
                    case'一':return 1;
                    case'二':return 2;
                    case'三':return 3;
                    case'四':return 4;
                    case'五':return 5;
                    case'六':return 6;
                    case'七':return 7;
                    case'八':return 8;
                    case'九':return 9;
                    case'零':return 0;
                    default:return -1;
                }
            }
        }
    }

/// <summary>
/// 
/// </summary>
    struct Unit
    {
        public int this[char c]
        {
            get
            {
                switch (c)
                {
                    case'十':return 10;
                    case'百':return 100;
                    case'千':return 1000;
                    case'万':return 10000;
                    case'亿':return 100000000;
                    default:return 1;
                }
            }
        }
    }

    public long Parse(string cnum)
    {
        Unit unit;
        Number number;
        cnum = Regex.Replace(cnum, "\\s+", "");
        long firstUnit = 1;//一级单位                
        long secondUnit = 1;//二级单位 
        long tmpUnit = 1;
        long result = 0;
        for (int i = cnum.Length - 1; i> -1;--i)
        {
            tmpUnit = unit[cnum[i]];
            if (tmpUnit > firstUnit)
            {
                firstUnit = tmpUnit;
                secondUnit = 1;
                continue;
            }
            else if(tmpUnit > secondUnit)
            {
                secondUnit = tmpUnit;
                continue;
            }
            result += firstUnit * secondUnit * number[cnum[i]];
        }
        return result;
    }