How to convert numbers into words in C#?

Hi,
I am in the midst of a program to convert number into words.
I am getting an error : Input string was not in a correct format
These are my codes:-

My error comes in these line:-
int number = Convert.ToInt32(txtNetAmount.Text.ToString()); // error line
frm.Report.SetText(axFpColm, axFpRow, "In words: " +objConv.NumberToWords(number));
Please help me to solve this problem.

Hi!

try like this..

Design page

C# - Convert Number to Words in Asp.net

Enter Value:

Code Bheind:

using System;

public partial class _Default : System.Web.UI.Page

{

protected void Page_Load(object sender, EventArgs e)

{

}

protected void btnClick_Click(object sender, EventArgs e)

{

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

lblmsg.InnerText = 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 / 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;

}

4 Replies

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

Ajay Yadav12y ago
You should resort to Parse() method here...
Ramesh Maruthi12y ago
Hello Bineesh,

Once look at Humainzer it's awesome to do this kind of things, no need of writing any code :)
Vulpes12y ago
Check also this thread:

http://www.c-sharpcorner.com/Forums/Thread/263117/converting-one-hundred-trillion-digits-to-text.aspx
Ankur Jain12y ago
Hi!

try like this..

Design page

C# - Convert Number to Words in Asp.net
Enter Value:

Code Bheind:

using System;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void btnClick_Click(object sender, EventArgs e)
{
string word = ConvertNumbertoWords(Convert.ToInt32(txtnumber.Text));
lblmsg.InnerText = 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 / 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;
}
}