将阿拉伯数字转换成中文大写人民币

///<summary>
/// 将数字转换成大写人民币
///</summary>
///<param name="var">要转换的数字字符串</param>
///<returns>转换后的大写人民币字符串</returns>
private static string Num2Char(string var)
{
 string retval = "";
 bool IsPoint = false;
 double v = double.Parse(var);
 if (v > 0)
 {
  char[] chars = v.ToString().ToCharArray();
  foreach (char c in chars)
  {
   IsPoint = false;
   switch (c)
   {
    case '1': retval += "壹"; break;
    case '2': retval += "贰"; break;
    case '3': retval += "叁"; break;
    case '4': retval += "肆"; break;
    case '5': retval += "伍"; break;
    case '6': retval += "陆"; break;
    case '7': retval += "柒"; break;
    case '8': retval += "捌"; break;
    case '9': retval += "玖"; break;
    case '0': retval += "零"; break;
    default: IsPoint = true; break;
   }
   if (!IsPoint)
   {
    v = v / 10;
    if (v > 0.001 && v < 0.009999999999)
    {
     retval += "分";
    }
    else if (v > 0.01 && v < 0.099999999999)
    {
     retval += "角";
    }
    else if (v > 0.1 && v < 0.999999999999)
    {
     retval += "元";
    }
    else if (v > 1 && v < 9.999999999999)
    {
     retval += "拾";
    }
    else if (v > 10 && v < 99.999999999999)
    {
     retval += "佰";
    }
    else if (v > 100 && v < 999.999999999999)
    {
     retval += "仟";
    }
    else if (v > 1000 && v < 9999.999999999999)
    {
     retval += "万";
    }
    else if (v > 10000 && v < 99999.999999999999)
    {
     retval += "拾";
    }
    else if (v > 100000 && v < 999999.999999999999)
    {
     retval += "佰";
    }
    else if (v > 1000000 && v < 9999999.999999999999)
    {
     retval += "仟";
    }
    else if (v > 10000000 && v < 99999999.999999999999)
    {
     retval += "亿";
    }
   }
  }
 }
 else
 {
  retval = "零";
 }
 return retval
}

public string chang(string money)
 {
            //将小写金额转换成大写金额   
            double MyNumber = Convert.ToDouble(money);
            String[] MyScale = { "分", "角", "元", "拾", "佰", "仟", "万", "拾", "佰", "仟", "亿", "拾", "佰", "仟", "兆", "拾", "佰", "仟" };
            String[] MyBase = { "零", "壹", "贰", "叁", "肆", "伍", "陆", "柒", "捌", "玖" };
            String M = "";
            bool isPoint = false;
            if (money.IndexOf(".") != -1)
            {
                money = money.Remove(money.IndexOf("."), 1);
                isPoint = true;
            }
            for (int i = money.Length; i > 0; i--)
            {
                int MyData = Convert.ToInt16(money[money.Length - i].ToString());
                M += MyBase[MyData];
                if (isPoint == true)
                {
                    M += MyScale[i - 1];
                }
                else
                {
                    M += MyScale[i + 1];
                }
            }
            return M;
}