In this article, I'm trying to explain how to convert given numbers into words using c# programming language in asp.net. This is the requirement that I implemented in one of my previous projects, so I thought this concept was very useful for those who started they carried as a .net developer in the beginning stage.
A preview of this project I already showed in the form of an image, you can find below.
HTML Markup: Design Page
Let's design our user interface according to our requirements which I showed in the above image.
Try to implement it in your way, if you not then you can copy and paste this below code.
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Numbertowords.aspx.cs" Inherits="ASPNET_Numbertowords" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div>
<b>Enter Amount : </b></b><asp:TextBox ID="txt_number" runat="server" Width="311px"></asp:TextBox>
<asp:Button ID="Button1"
runat="server" Text=" InWords " onclick="Button1_Click" />
</div>
<asp:Label ID="lblresult" runat="server" Text=""></asp:Label>
</form>
</body>
</html>
C# Coding: Numbers to Words Logic
In this code behind the page, I create a method called Inwords it is a private static method and this method requires input as an integer value and the return type is a string.
This method contains logic which is used to convert a given integer number into a string and it returns that string as output to the button click event where it is shown on the page as output.
Button1_Click Event fires whenever the end user clicks on this button it takes the textbox value i.e txt_number and passes that value into Inwords method.
By default textbox value is a string so we need to parse that string value into an integer because the Inwords method accepts only integer values and it returns as a string.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
public partial class ASPNET_Numbertowords : System.Web.UI.Page
{
protected void Button1_Click(object sender, EventArgs e)
{
string converttowords = Inwords(Convert.ToInt32(txt_number.Text.Trim()));
lblresult.Text = "Amount InWords : " + converttowords + " Rupees Only.";
}
private static string Inwords(int n)
{
if (n == 0)
return "ZERO";
if (n < 0)
return "minus " + Inwords(Math.Abs(n));
string inwords = "";
if ((n / 10000000) > 0)
{
inwords += Inwords(n / 10000000) + " CRORE ";
n = n % 10000000;
}
if ((n / 100000) > 0)
{
inwords += Inwords(n / 100000) + " LAKH ";
n = n % 100000;
}
if ((n / 1000) > 0)
{
inwords += Inwords(n / 1000) + " THOUSAND ";
n = n % 1000;
}
if ((n / 100) > 0 || (n / 1000) < 0)
{
inwords += Inwords(n / 100) + " HUNDRED ";
n = n % 100;
}
if (n > 0)
{
if (inwords != "")
inwords += "AND ";
var units = new[] { "ZERO", "ONE", "TWO", "THREE", "FOUR", "FIVE", "SIX", "SEVEN", "EIGHT", "NINE", "TEN", "ELEVEN", "TWELVE", "THIRTEEN", "FOURTEEN", "FIFTEEN", "SIXTEEN", "SEVENTEEN", "EIGHTEEN", "NINETEEN" };
var tens = new[] { "ZERO", "TEN", "TWENTY", "THIRTY", "FORTY", "FIFTY", "SIXTY", "SEVENTY", "EIGHTY", "NINETY" };
if (n < 20)
inwords += units[n];
else
{
inwords += tens[n / 10];
if ((n % 10) > 0)
inwords += " " + units[n % 10];
}
}
return inwords;
}
}
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