c# - Crystal Reports を使用して数式内の数値を単語に変換するにはどうすればよいですか?

Question

たとえば、10000.36 は 1 万 36 に変換されます。

Answer 1

namespace NumToText
{
    static class NumberToText
    {
        private static string[] _ones =
        {
            "zero",
            "one",
            "two",
            "three",
            "four",
            "five",
            "six",
            "seven",
            "eight",
            "nine"
        };

        private static string[] _teens =
        {
            "ten",
            "eleven",
            "twelve",
            "thirteen",
            "fourteen",
            "fifteen",
            "sixteen",
            "seventeen",
            "eighteen",
            "nineteen"
        };

        private static string[] _tens =
        {
            "",
            "ten",
            "twenty",
            "thirty",
            "forty",
            "fifty",
            "sixty",
            "seventy",
            "eighty",
            "ninety"
        };

        // US Nnumbering:
        private static string[] _thousands =
        {
            "",
            "thousand",
            "million",
            "billion",
            "trillion",
            "quadrillion"
        };

        /// <summary>
        /// Converts a numeric value to words suitable for the portion of
        /// a check that writes out the amount.
        /// </summary>
        /// <param name="value">Value to be converted</param>
        /// <returns></returns>
        public static string Convert(decimal value)
        {
            string digits, temp;
            bool showThousands = false;
            bool allZeros = true;

            // Use StringBuilder to build result
            StringBuilder builder = new StringBuilder();
            // Convert integer portion of value to string
            digits = ((long)value).ToString();
            // Traverse characters in reverse order
            for (int i = digits.Length - 1; i >= 0; i--)
            {
                int ndigit = (int)(digits[i] - '0');
                int column = (digits.Length - (i + 1));

                // Determine if ones, tens, or hundreds column
                switch (column % 3)
                {
                    case 0:        // Ones position
                        showThousands = true;
                        if (i == 0)
                        {
                            // First digit in number (last in loop)
                            temp = String.Format("{0} ", _ones[ndigit]);
                        }
                        else if (digits[i - 1] == '1')
                        {
                            // This digit is part of "teen" value
                            temp = String.Format("{0} ", _teens[ndigit]);
                            // Skip tens position
                            i--;
                        }
                        else if (ndigit != 0)
                        {
                            // Any non-zero digit
                            temp = String.Format("{0} ", _ones[ndigit]);
                        }
                        else
                        {
                            // This digit is zero. If digit in tens and hundreds
                            // column are also zero, don't show "thousands"
                            temp = String.Empty;
                            // Test for non-zero digit in this grouping
                            if (digits[i - 1] != '0' || (i > 1 && digits[i - 2] != '0'))
                                showThousands = true;
                            else
                                showThousands = false;
                        }

                        // Show "thousands" if non-zero in grouping
                        if (showThousands)
                        {
                            if (column > 0)
                            {
                                temp = String.Format("{0}{1}{2}",
                                    temp,
                                    _thousands[column / 3],
                                    allZeros ? " " : ", ");
                            }
                            // Indicate non-zero digit encountered
                            allZeros = false;
                        }
                        builder.Insert(0, temp);
                        break;

                    case 1:        // Tens column
                        if (ndigit > 0)
                        {
                            temp = String.Format("{0}{1}",
                                _tens[ndigit],
                                (digits[i + 1] != '0') ? "-" : " ");
                            builder.Insert(0, temp);
                        }
                        break;

                    case 2:        // Hundreds column
                        if (ndigit > 0)
                        {
                            temp = String.Format("{0} hundred ", _ones[ndigit]);
                            builder.Insert(0, temp);
                        }
                        break;
                }
            }

            // Append fractional portion/cents
            builder.AppendFormat("and {0:00}/100", (value - (long)value) * 100);

            // Capitalize first letter
            return String.Format("{0}{1}",
                Char.ToUpper(builder[0]),
                builder.ToString(1, builder.Length - 1));
        }
    }
}

このクラスを使用できます：

string result = NumberToText.Convert(10000.36);

resultパラメータを Crystal に送信します。