Number to Word Converter in Asp.Net

In this post,we will seeing how to convert currency to words in asp.net using c# or convert numbers to words in asp.net using c# with example or convert currency / numbers to string in asp.net using c#. To known more about number system Click Here.
In previous post,we learn convert numbers to Hindi/Marathi words in asp.net using c#, we learn convert numbers to Hindi/Marathi words in Crystal Report,How to connect to Database using ado.net, Gridview Control, Web.Config file, Application State, Asp.Net Page Life Cycle. Now we will see how to convert currency / numbers to words / string in asp.net using c# by example.

Code: NumberToTextEnglish.aspx.cs

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="NumberToTextEnglish.aspx.cs" 
Inherits="LearnAsp.Net.NosToWord.NumberToTextEnglish" %>

<!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>
    <h3>Converting Numbers to Words In C#</h3>
        <asp:TextBox ID="txtNumber" runat="server" MaxLength="30"></asp:TextBox>  
        <asp:Button ID="btnConvert" runat="server" Text="Convert" 
            onclick="btnConvert_Click" />
            <br />
        <asp:Label ID="lblResult" runat="server" Text=""></asp:Label>
    </div>
    </form>
</body>
</html>

Code: NumberToTextEnglish.aspx.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

namespace LearnAsp.Net.NosToWord
{
    public partial class NumberToTextEnglish : System.Web.UI.Page
    {
        String[] Digit19 ={"", "One", "Two", "Three", "four", "Five", "Six", "Seven", 
        "Eight", "Nine", "Ten", "Eleven", "Twelve", 
  "Thirteen", "Fourteen", "Fifteen", "Sixteen", "Seventeen", "Eighteen", "Nineteen"};

        String[] HigherDigit = { "", "", "Hundred", "Thousand", "Lakh", "Crore", "Arab", "Kharab", "Nil" };
        String[] Map10 = new[] { "", "", "Twenty", "Thirty", "Forty", "Fifty", "Sixty", "Seventy", "Eighty", "Ninety" };

        String[] ArrIdx = { "4", "6", "8", "10", "12", "14", "16", "18" };

        String NumberToWord(Decimal Amt)
        {
            String retNos = "";
            String Sign = "";
            if (Amt < 0)
                Sign = " - ";

            Amt = Math.Abs(Amt);
            int arrL = (Amt.ToString()).Length;
            String StrNum = Amt.ToString();
            if (Amt == 0)
                retNos = "ZERO";
            else if (Amt == 100)
                retNos = "HUNDRED";
            else
                for (int i = arrL - 1; i >= 0; i--)
                {
                    int step = 1;
                    int HStep = 2;
                    Boolean is2Digit = false;
                    if (ArrIdx.Contains(i.ToString()))
                    {
                        is2Digit = true;
                        step = 2;
                    }
                    int a = i % 2 == 1 ? 1 : 0;

                    HStep = 2 + ((i - 3) / 2) + ((i - 3) % 2) + a;
                    if (i >= 3)
                    {
                        if (Int32.Parse(StrNum.Substring(arrL - (i + 1), step)) < 20)
                            retNos += Digit19[Int32.Parse(StrNum.Substring(arrL - (i + 1), step))] + " " + HigherDigit[HStep] + " ";
                        else if (Int32.Parse(StrNum.Substring(arrL - (i + 1), step)) % 10 == 0)
                            retNos += Map10[Int32.Parse(StrNum.Substring(arrL - (i + 1), step)) / 10] + " ";
                        else
                            retNos += Map10[Int32.Parse(StrNum.Substring(arrL - (i + 1), step)) / 10] + "-" + Digit19[Int32.Parse(StrNum.Substring(arrL - (i + 1), step)) % 10] + " " + HigherDigit[HStep] + " ";

                    }
                    else if (i >= 2)
                    {
                        int b = (arrL == i + 1) && i % 2 == 0 ? 0 : arrL - (i + 1);

                        if (!String.IsNullOrEmpty(Digit19[Int32.Parse(StrNum.Substring(b, 1))]))
                        {
                            String t = StrNum.Substring(b);
                            if (t == "100")
                                retNos += "HUNDRED";
                            else
                                retNos += Digit19[Int32.Parse(StrNum.Substring(b, 1))] + " " + HigherDigit[i] + " ";
                        }
                    }
                    else
                    {
                        int b = arrL <= 1 ? 1 : 2;
                        if (Int32.Parse(StrNum.Substring(arrL - b, b)) < 20)
                            retNos += Digit19[Int32.Parse(StrNum.Substring(arrL - b, b))] + HigherDigit[i] + " ";
                        else if (Int32.Parse(StrNum.Substring(arrL - b, b)) % 10 == 0)
                            retNos += Map10[Int32.Parse(StrNum.Substring(arrL - b, b)) / 10] + " ";
                        else
                            retNos += Map10[Int32.Parse(StrNum.Substring(arrL - b, b)) / 10] + "-" + Digit19[Int32.Parse(StrNum.Substring(arrL - b, b)) % 10] + " ";
                        break;
                    }

                    if (is2Digit)
                        i--;
                }
            return Sign + retNos;
        }

        protected void btnConvert_Click(object sender, EventArgs e)
        {
            if (String.IsNullOrEmpty(txtNumber.Text))
            {
                lblResult.Text = "Plz Enter Nos in text box...";
                txtNumber.Focus();
                return;
            }
            Decimal iNo = Convert.ToDecimal(txtNumber.Text);
            String str = NumberToWord(iNo);

            lblResult.Text =  str;
        }
    }
}

Output:

[full_width]

08 February 2020

Number to Word Converter in Asp.Net

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