C#根据输入的数字计算 4 位数的标识串!

using  System;

namespace  NewsDataTransceiver
{
    /**//// <summary>
    /// MakeCode 的摘要说明。
    /// 根据输入的数字计算 4 位数的标识串，本函数保证输入数字在 0 - 1500625(5位：60466175) 之内不出现重复串 
    /// 输入的数字,最好使用自动增加的ID,或者随机数.
    /// 使用的时候应该修改命名空间 NewsDataTransceiver
    /// </summary>
    public class MakeCode
    {
        public static string MakeCodeStr(long Num)
        {
            //
            // TODO: 在此处添加构造函数逻辑
            //
            long Num1,Num2,Num3,Num4;

            Num1 = Num % 35;
            Num2 = ((int)(Num / 35)) % 35 ;
            Num3 = ((int)(Num / 1225)) %  35;
            Num4 = ((int)(Num / 42875)) % 35;
            //Num5=(Num \ 1500625) Mod 35

            return GetNumStr(Num4) + GetNumStr(Num3) + GetNumStr(Num2) + GetNumStr(Num1);
        }

        public static  string GetNumStr(long Num)
        {
            switch(Num)
            {
                case 0:
                    return "K";
                case 1:
                    return "Z";
                case 2:
                    return "S";
                case 3:
                    return "5";
                case 4:
                    return "H";
                case 5:
                    return "A";
                case 6:
                    return "P";
                case 7:
                    return "9";
                case 8:
                    return "N";
                case 9:
                    return "7";
                case 10:
                    return "6";
                case 11:
                    return "2";
                case 12:
                    return "G";
                case 13:
                    return "0";
                case 14:
                    return "B";
                case 15:
                    return "D";
                case 16:
                    return "C";
                case 17:
                    return "F";
                case 18:
                    return "1";
                case 19:
                    return "J";
                case 20:
                    return "I";
                case 21:
                    return "W";
                case 22:
                    return "E";
                case 23:
                    return "3";
                case 24:
                    return "R";
                case 25:
                    return "V";
                case 26:
                    return "X";
                case 27:
                    return "L";
                case 28:
                    return "4";
                case 29:
                    return "M";
                case 30:
                    return "Y";
                case 31:
                    return "Q";
                case 32:
                    return "8";
                case 33:
                    return "T";
                case 34:
                    return "U";
                default:
                    return "Z";
            }
        }
    }
}

ASP 的实现方法:

< %
'  根据输入的数字计算 4 位数的标识串，本函数保证输入数字在 0 - 1500625(5位：60466175) 之内不出现重复串 
PUBLIC   FUNCTION  MakeCode4(Num)
     DIM  Num1,Num2,Num3,Num4,Num5,Num6,Num7
    Num1 = Num  Mod   35
    Num2 = (Num  \   35 )  Mod   35  
    Num3 = (Num  \   1225 )  Mod    35
    Num4 = (Num  \   42875 )  Mod   35
'     Num5=(Num \ 1500625) Mod 35

   MakeCode4 = GetNumStr(Num4)  &  GetNumStr(Num3)  &  GetNumStr(Num2)  &  GetNumStr(Num1)
END FUNCTION
PUBLIC   FUNCTION  GetNumStr(Num)
Select   case  Num
     case   0
        GetNumStr = " K "
     case   1
        GetNumStr = " Z "
     case   2
        GetNumStr = " S "
     case   3
        GetNumStr = " 5 "
     case   4
        GetNumStr = " H "
     case   5
        GetNumStr = " A "
     case   6
        GetNumStr = " P "
     case   7
        GetNumStr = " 9 "
     case   8
        GetNumStr = " N "
     case   9
        GetNumStr = " 7 "
     case   10     
        GetNumStr = " 6 "
     case   11     
        GetNumStr = " 2 "
     case   12     
        GetNumStr = " G "
     case   13     
        GetNumStr = " 0 "
     case   14     
        GetNumStr = " B "
     case   15     
        GetNumStr = " D "
     case   16     
        GetNumStr = " C "
     case   17     
        GetNumStr = " F "
     case   18     
        GetNumStr = " 1 "
     case   19     
        GetNumStr = " J "
     case   20     
        GetNumStr = " I "
     case   21     
        GetNumStr = " W "
     case   22     
        GetNumStr = " E "
     case   23     
        GetNumStr = " 3 "
     case   24     
        GetNumStr = " R "
     case   25     
        GetNumStr = " V "
     case   26     
        GetNumStr = " X "
     case   27     
        GetNumStr = " L "
     case   28     
        GetNumStr = " 4 "
     case   29     
        GetNumStr = " M "
     case   30     
        GetNumStr = " Y "
     case   31     
        GetNumStr = " Q "
     case   32     
        GetNumStr = " 8 "
     case   33     
        GetNumStr = " T "
     case   34     
        GetNumStr = " U "
     END   SELECT
END FUNCTION
% >