如何将十进制值转换为字符串类型

Question

我正在尝试将总金额显示为 word

以下是我正在使用的代码：-

public void amountinwords()
{
string word = ConvertNumbertoWords(Convert.ToInt32(popopop.Text));
amountttiinwwords.Text = word;
}

public static string ConvertNumbertoWords(int number)
{
if (number == 0)
return "ZERO";
if (number < 0)
return "minus " + ConvertNumbertoWords(Math.Abs(number));
string words = "";

if ((number / 1000000000) > 0)
{
words += ConvertNumbertoWords(number / 1000000000) + " Billion ";
number %= 1000000000;
}

if ((number / 10000000) > 0)
{
words += ConvertNumbertoWords(number / 10000000) + " Crore ";
number %= 10000000;
}

if ((number / 1000000) > 0)
{
words += ConvertNumbertoWords(number / 1000000) + " MILLION ";
number %= 1000000;
}
if ((number / 1000) > 0)
{
words += ConvertNumbertoWords(number / 1000) + " THOUSAND ";
number %= 1000;
}
if ((number / 100) > 0)
{
words += ConvertNumbertoWords(number / 100) + " HUNDRED ";
number %= 100;
}
if (number > 0)
{
if (words != "")
words += "AND ";
var unitsMap = new[] { "ZERO", "ONE", "TWO", "THREE", "FOUR", "FIVE", "SIX", "SEVEN", "EIGHT", "NINE", "TEN", "ELEVEN", "TWELVE", "THIRTEEN", "FOURTEEN", "FIFTEEN", "SIXTEEN", "SEVENTEEN", "EIGHTEEN", "NINETEEN" };
var tensMap = new[] { "ZERO", "TEN", "TWENTY", "THIRTY", "FORTY", "FIFTY", "SIXTY", "SEVENTY", "EIGHTY", "NINETY" };

if (number < 20)
words += unitsMap[number];
else
{
words += tensMap[number / 10];
if ((number % 10) > 0)
words += " " + unitsMap[number % 10];
}
}
return words;
}

但它正在获取错误 System.FormatException：输入字符串的格式不正确。 因为该值是十进制形式（例如 - 8452.3）

enter image description here

谁能帮我解决这个问题

提前谢谢..

Answer 1

当你说：

string word = ConvertNumbertoWords(Convert.ToInt32(popopop.Text));

您说字符串类型等于整数。左边不等于右边。文本也不是字符串。当您想将某些内容转换为 int 并且希望它是字符串时。您使用 ToString 方法。

here is an ex i just tested:

         double c = 100; 
//-------original double val
                    string d = Text.Plain;
///----im on console so I made it a text class
                    d = c.ToString("F3");
// cast to string and F3 is numbers after decimal you want

//--------------------------------------------- --------/// IT 对我有用：

  static void Main(string[] args)
        {
     string amountttiinwwords = Text.Html;
            string popopop = Text.Html;
            popopop = "-2"; // the input from yoo

            string word = ConvertNumbertoWords(Convert.ToInt32(popopop));
            amountttiinwwords = word.ToString();

            Console.WriteLine(amountttiinwwords);

}


 private static string ConvertNumbertoWords(int number)
        {
            if (number == 0)
                return "ZERO";
            if (number < 0)
                return "minus " + ConvertNumbertoWords(Math.Abs(number));
            string words = "";

            if ((number / 1000000000) > 0)
            {
                words += ConvertNumbertoWords(number / 1000000000) + " Billion ";
                number %= 1000000000;
            }

            if ((number / 10000000) > 0)
            {
                words += ConvertNumbertoWords(number / 10000000) + " Crore ";
                number %= 10000000;
            }

            if ((number / 1000000) > 0)
            {
                words += ConvertNumbertoWords(number / 1000000) + " MILLION ";
                number %= 1000000;
            }
            if ((number / 1000) > 0)
            {
                words += ConvertNumbertoWords(number / 1000) + " THOUSAND ";
                number %= 1000;
            }
            if ((number / 100) > 0)
            {
                words += ConvertNumbertoWords(number / 100) + " HUNDRED ";
                number %= 100;
            }
            if (number > 0)
            {
                if (words != "")
                    words += "AND ";
                var unitsMap = new[] { "ZERO", "ONE", "TWO", "THREE", "FOUR", "FIVE", "SIX", "SEVEN", "EIGHT", "NINE", "TEN", "ELEVEN", "TWELVE", "THIRTEEN", "FOURTEEN", "FIFTEEN", "SIXTEEN", "SEVENTEEN", "EIGHTEEN", "NINETEEN" };
                var tensMap = new[] { "ZERO", "TEN", "TWENTY", "THIRTY", "FORTY", "FIFTY", "SIXTY", "SEVENTY", "EIGHTY", "NINETY" };

                if (number < 20)
                    words += unitsMap[number];
                else
                {
                    words += tensMap[number / 10];
                    if ((number % 10) > 0)
                        words += " " + unitsMap[number % 10];
                }
            }
            return words;

        }

Answer 2

感谢您的帮助... 我找到了我的解决方案....我正在使用这段代码，它对我有用！！！！

 public String changeToWords(String numb)
    {
        String val = "", wholeNo = numb, points = "", andStr = "", pointStr = "";
        String endStr = ("");
        try
        {
            int decimalPlace = numb.IndexOf(".");
            if (decimalPlace > 0)
            {
                wholeNo = numb.Substring(0, decimalPlace);
                points = numb.Substring(decimalPlace + 1);
                if (Convert.ToInt32(points) > 0)
                {
                    andStr = ("point");// just to separate whole numbers from points/Rupees

                }
            }
            val = String.Format("{0} {1}{2} {3}", translateWholeNumber(wholeNo).Trim(), andStr, pointStr, endStr);
        }
        catch
        {
            ;
        }
        return val;
    }

    private String translateWholeNumber(String number)
    {
        string word = "";
        try
        {
            bool beginsZero = false;//tests for 0XX
            bool isDone = false;//test if already translated
            double dblAmt = (Convert.ToDouble(number));
            //if ((dblAmt > 0) && number.StartsWith("0"))

            if (dblAmt > 0)
            {//test for zero or digit zero in a nuemric
                beginsZero = number.StartsWith("0");
                int numDigits = number.Length;
                int pos = 0;//store digit grouping
                String place = "";//digit grouping name:hundres,thousand,etc...
                switch (numDigits)
                {
                    case 1://ones' range
                        word = ones(number);
                        isDone = true;
                        break;
                    case 2://tens' range
                        word = tens(number);
                        isDone = true;
                        break;
                    case 3://hundreds' range
                        pos = (numDigits % 3) + 1;
                        place = " Hundred ";
                        break;
                    case 4://thousands' range
                    case 5:
                    case 6:
                        pos = (numDigits % 4) + 1;
                        place = " Thousand ";
                        break;
                    case 7://millions' range
                    case 8:
                    case 9:
                        pos = (numDigits % 7) + 1;
                        place = " Million ";
                        break;
                    case 10://Billions's range
                        pos = (numDigits % 10) + 1;
                        place = " Billion ";
                        break;
                    //add extra case options for anything above Billion...
                    default:
                        isDone = true;
                        break;
                }
                if (!isDone)
                {//if transalation is not done, continue...(Recursion comes in now!!)
                    word = translateWholeNumber(number.Substring(0, pos)) + place + translateWholeNumber(number.Substring(pos));
                    //check for trailing zeros
                    if (beginsZero) word = " and " + word.Trim();
                }
                //ignore digit grouping names
                if (word.Trim().Equals(place.Trim())) word = "";
            }
        }
        catch
        {
            ;
        }
        return word.Trim();
    }

    private String tens(String digit)
    {
        int digt = Convert.ToInt32(digit);
        String name = null;
        switch (digt)
        {
            case 10:
                name = "Ten";
                break;
            case 11:
                name = "Eleven";
                break;
            case 12:
                name = "Twelve";
                break;
            case 13:
                name = "Thirteen";
                break;
            case 14:
                name = "Fourteen";
                break;
            case 15:
                name = "Fifteen";
                break;
            case 16:
                name = "Sixteen";
                break;
            case 17:
                name = "Seventeen";
                break;
            case 18:
                name = "Eighteen";
                break;
            case 19:
                name = "Nineteen";
                break;
            case 20:
                name = "Twenty";
                break;
            case 30:
                name = "Thirty";
                break;
            case 40:
                name = "Fourty";
                break;
            case 50:
                name = "Fifty";
                break;
            case 60:
                name = "Sixty";
                break;
            case 70:
                name = "Seventy";
                break;
            case 80:
                name = "Eighty";
                break;
            case 90:
                name = "Ninety";
                break;
            default:
                if (digt > 0)
                {
                    name = tens(digit.Substring(0, 1) + "0") + " " + ones(digit.Substring(1));
                }
                break;
        }
        return name;
    }

    private String ones(String digit)
    {
        int digt = Convert.ToInt32(digit);
        String name = "";
        switch (digt)
        {
            case 1:
                name = "One";
                break;
            case 2:
                name = "Two";
                break;
            case 3:
                name = "Three";
                break;
            case 4:
                name = "Four";
                break;
            case 5:
                name = "Five";
                break;
            case 6:
                name = "Six";
                break;
            case 7:
                name = "Seven";
                break;
            case 8:
                name = "Eight";
                break;
            case 9:
                name = "Nine";
                break;
        }
        return name;
    }


 public void amountinwords()
    {
        string value = total.Text;
        string a = value.ToString();
        string[] b = a.Split('.');
        int firstValue = int.Parse(b[0]);
        int secondValue = int.Parse(b[1]);

        amountttiinwwords.Text = changeToWords(firstValue.ToString());
        taxamountinwords.Text = changeToWords(tax.Text);   
    }

谢谢....