How to convert decimal value to striing type

Amitabh Baidehi

8y1.9k.NET

I'm trying to show the Total amount into word

Following is the code i'm using :-

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;
}

but it is fetching error System.FormatException: Input string was not in a correct format.

because the value is in decimal form (example - 8452.3)

Can anybody help me with this

Thanks in advance..

13 Replies

Know the answer? Post it — somebody with the same question will find it here.

Nitin Sontakke8y ago
Good to know that.

However, when I have a look at your code, I cannot resist the temptation to improve upon it. In fact, as a developer, you should always strive to keep on reducing number of lines without loss of functionality, of course!

For example, here is rewritten function ones:
private String ones(String digit)
{
  Int32 index = Convert.ToInt32(digit);
  String[] ones = { "One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine" };
  return ones[index - 1];
}
Similarly, tens can be rewritten as follows:
private String tens(String digit)
{
  String[] ten = { "Ten", "Twenty", "Thirty", "Fourty", "Fifty", "Sixty", "Seventy", "Eighty", "Ninety" };
  String[] eles = { "Eleven", "Twelve", "Thirteen", "Fourteen", "Fifteen", "Sixteen", "Seventeen", "Eighteen", "Nineteen" };
  Char left = digit[0]; Char right = digit[1];
  if (left == '1')
    return eles[Int32.Parse(right.ToString()) - 1];
  else
    if(right == '0')
      return ten[Int32.Parse(left.ToString()) - 1];
    else
      return tens(digit.Substring(0, 1) + "0") + " " + ones(digit.Substring(1));
}
Doesn't this look lot more concise and elegent?
Amitabh Baidehi8y ago
Thanks for the help... i found my solution .... i'm using this code and it is working for me !!!!
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;
   }
ublic 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);
   }
Rafnas T P8y ago
you can check the link below for converting numeric value to words

http://www.c-sharpcorner.com/article/convert-numeric-value-into-words-currency-in-c-sharp/

its a c# code you can copy those functions and use as it is in asp.net only main function you can change it as below

before writing this please check your popopop.Text Value should me numeric it may contain negative symbol(-) and no other ex (123.5 or -128 )
string isNegative = "";
string number =  popopop.Text..Replace(" ","");

string numberinWords;
              if (number.Contains("-"))
              {
                  isNegative = "Minus ";
                  number = number.Substring(1, number.Length - 1);
              }
              if (number == "0")
              {
                  numberinWords="Zero Only";
              }
              else
              {
                  numberinWords= isNegative + ConvertToWords(number);
              }
             amountttiinwwords.Text =numberinWords;
Rafnas T P8y ago
hi,
i have posted an article to convert to number to words you may can check that

http://www.c-sharpcorner.com/article/convert-numeric-value-into-words-currency-in-c-sharp/
Nitin Sontakke8y ago
Sorry, I didn't get your question actually!

You can use the code I have pasted, if you wish. Some value is entered, you parse it to double and pass to function I pasted here.
Or change your code to use Double, instead of Int.
Nitin Sontakke8y ago
The data type you are using Integer / Int32 doesn't support decimal digits, right? So obviously, you will not get decimal digits.
Amitabh Baidehi8y ago
@nitin
Thank you sir
but how can it fetch the value to label
Amit Gupta8y ago
Its an c# code, it can be used in all .net family
Amitabh Baidehi8y ago
@Amit
Thanks bro.. but i need code for asp.net c#

can i mke use of my code with adding some new lines ???
Nitin Sontakke8y ago
You can try following with minor modifications. Minus number are not catered to here.
public static class FigureToWord
{
  public static String GetInWords(Double Figure)
  {
    return figure2Word(Figure);
  }

  private static String figure2Word(Double Figure)
  {
    String stringFigure = Figure.ToString("00000000000.00");
    if (stringFigure.Length > 14) return "Number too big!";
    String returnValue = String.Empty;
    Int32 billion = Int32.Parse(stringFigure.Substring(0, 2).Trim());
    Int32 crore = Int32.Parse(stringFigure.Substring(2, 2).Trim());
    Int32 lakh = Int32.Parse(stringFigure.Substring(4, 2).Trim());
    Int32 thousand = Int32.Parse(stringFigure.Substring(6, 2).Trim());
    Int32 hundred = Int32.Parse(stringFigure.Substring(8, 1).Trim());
    Int32 tens = Int32.Parse(stringFigure.Substring(9, 2).Trim());
    Int32 paise = Int32.Parse(stringFigure.Substring(12, 2).Trim());
    if (billion != 0)
      returnValue += ftow(billion) + " Billion ";
    if (crore != 0)
      returnValue += ftow(crore) + " Crore ";
    if (lakh != 0)
      returnValue += ftow(lakh) + " Lakh ";
    if (thousand != 0)
      returnValue += ftow(thousand) + " Thousand ";
    if (hundred != 0)
      returnValue += ftow(hundred) + " Hundred ";
    if (tens != 0)
      returnValue += ftow(tens) + " ";
    if (paise != 0)
      returnValue += "and " + ftow(paise);

    return returnValue;
  }

  private static String ftow(Int32 number)
  {
    if (number == 0) return "Zero";

    String[] ones = { "One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine" };
    String[] eles = { "Eleven", "Twelve", "Threeteen", "Forteen", "Fifteen", "Sixteen", "Seventeen", "Eighteen", "Nineteen" };
    String[] tens = { "Ten", "Twenty", "Threety", "Forty", "Fifty", "Sixty", "Seventy", "Eighty", "Ninety" };

    String stringNumber = number.ToString();
    Int32 left = -1; Int32 right = -1;
    if (stringNumber.Length == 1)
      right = Int32.Parse(stringNumber[0].ToString());
    else
    {
      left = Int32.Parse(stringNumber[0].ToString());
      right = Int32.Parse(stringNumber[1].ToString());
    }

    if (left == 0)
      return ones[right - 1];
    else
      if (left == 0)
        return eles[right - 1];
      else
        return right == 0 ? tens[left - 1]  : tens[left - 1] + " " + ones[right - 1];
  }
}
Amit Gupta8y ago
Two points to consider
1. You need to make your function's signature to be double pr decimal and not int, so that it can process decimal pointa.

2. If this function ia not upto the mark then you can take help from the below link
http://www.c-sharpcorner.com/article/convert-numeric-value-into-words-currency-in-c-sharp/
Amitabh Baidehi8y ago
@Nitin
Sir this code is working fine with whole numbers like 8546 or 7845 but not working with decimal numbers like 8546.2 or 7846.5
Nitin Sontakke8y ago
I see a space between - (minus) and 8 above. Please check. It shouldn't be there.