Code To Convert rupees(numbers) into words using C#.Net

Introduction:

In my previous article I have explained about how to validate emailid using javascript. In this article I am going to explain about code used to convert rupees(numbers) into words using C#.Net.

Explanation:

For explanation purpose I have a page. It has a textbox to input the numbers. And when you click on the convert to words button then it will convert the input numbers into words and shows it in the below label.

Below is the C# code used to do this functionality.

public static string NumbersToWords(int inputNumber)

{

    int inputNo = inputNumber;

    if (inputNo == 0)

        return "Zero";

    int[] numbers = new int[4];

    int first = 0;

    int u, h, t;

    System.Text.StringBuilder sb = new System.Text.StringBuilder();

    if (inputNo < 0)

    {

        sb.Append("Minus ");

        inputNo = -inputNo;

    }

    string[] words0 = {"" ,"One ", "Two ", "Three ", "Four ",

            "Five " ,"Six ", "Seven ", "Eight ", "Nine "};

    string[] words1 = {"Ten ", "Eleven ", "Twelve ", "Thirteen ", "Fourteen ",

            "Fifteen ","Sixteen ","Seventeen ","Eighteen ", "Nineteen "};

    string[] words2 = {"Twenty ", "Thirty ", "Forty ", "Fifty ", "Sixty ",

            "Seventy ","Eighty ", "Ninety "};

    string[] words3 = { "Thousand ", "Lakh ", "Crore " };

    numbers[0] = inputNo % 1000; // units

    numbers[1] = inputNo / 1000;

    numbers[2] = inputNo / 100000;

    numbers[1] = numbers[1] - 100 * numbers[2]; // thousands

    numbers[3] = inputNo / 10000000; // crores

    numbers[2] = numbers[2] - 100 * numbers[3]; // lakhs

    for (int i = 3; i > 0; i--)

    {

        if (numbers[i] != 0)

        {

            first = i;

            break;

        }

    }

    for (int i = first; i >= 0; i--)

    {

        if (numbers[i] == 0) continue;

        u = numbers[i] % 10; // ones

        t = numbers[i] / 10;

        h = numbers[i] / 100; // hundreds

        t = t - 10 * h; // tens

        if (h > 0) sb.Append(words0[h] + "Hundred ");

        if (u > 0 || t > 0)

        {

            if (h > 0 || i == 0) sb.Append("and ");

            if (t == 0)

                sb.Append(words0[u]);

            else if (t == 1)

                sb.Append(words1[u]);

            else

                sb.Append(words2[t - 2] + words0[u]);

        }

        if (i != 0) sb.Append(words3[i - 1]);

    }

    return sb.ToString().TrimEnd();

}

Below is the aspx code.

<form id="form1" runat="server">

<div>

    <table style="width: 50%;">

        <tr>

            <td>

                Input Number

            </td>

            <td>

                <asp:TextBox ID="txtNumber" runat="server"></asp:TextBox>

            </td>

        </tr>

        <tr>

            <td>

            </td>

            <td>

                <asp:Button ID="btnConvert" Text="Convert To Words" runat="server" OnClick="btnConvert_Click" />

            </td>

        </tr>

        <tr>

            <td colspan="2">

                <asp:Label ID="lblWords" runat="server"></asp:Label>

            </td>

        </tr>

    </table>

</div>

</form>

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