How to convert number to words in rupees using Repeater in asp net

1. lblTotalinWordValule is That Lable where u will get the Answer in words
2. lbltotal of column word is total in repeater
3. txttotal is textbox where i m getting value of total
4. all work is done under repeater item data bound


protected void rptr_ItemDataBound(object sender, RepeaterItemEventArgs e)
    {     
        Label lblTotalWord = e.Item.FindControl("lblTotalinWordValule") as Label;
        if (lblTotalWord != null)
        {
            Int64 NumVal = Convert.ToInt64(txttotal.Text.Trim());
            lblTotalWord.Text = Rupees(NumVal);
        }
    }
    public string Rupees(Int64 rup)
    {
        string result = "";
        Int64 res;
        if ((rup / 10000000) > 0)
        {
            res = rup / 10000000;
            rup = rup % 10000000;
            result = result + ' ' + RupeesToWords(res) + " Crore";
        }
        if ((rup / 100000) > 0)
        {
            res = rup / 100000;
            rup = rup % 100000;
            result = result + ' ' + RupeesToWords(res) + " Lack";
        }
        if ((rup / 1000) > 0)
        {
            res = rup / 1000;
            rup = rup % 1000;
            result = result + ' ' + RupeesToWords(res) + " Thousand";
        }
        if ((rup / 100) > 0)
        {
            res = rup / 100;
            rup = rup % 100;
            result = result + ' ' + RupeesToWords(res) + " Hundred";
        }
        if ((rup % 10) >= 0)
        {
            res = rup % 100;
            result = result + " " + RupeesToWords(res);
        }
        result = result + ' ' + " Rupees only";
        return result;
    }
    public string RupeesToWords(Int64 rup)
    {
        string result = "";
        if ((rup >= 1) && (rup <= 10))
        {
            if ((rup % 10) == 1) result = "One";
            if ((rup % 10) == 2) result = "Two";
            if ((rup % 10) == 3) result = "Three";
            if ((rup % 10) == 4) result = "Four";
            if ((rup % 10) == 5) result = "Five";
            if ((rup % 10) == 6) result = "Six";
            if ((rup % 10) == 7) result = "Seven";
            if ((rup % 10) == 8) result = "Eight";
            if ((rup % 10) == 9) result = "Nine";
            if ((rup % 10) == 0) result = "Ten";
        }
        if (rup > 9 && rup < 20)
        {
            if (rup == 11) result = "Eleven";
            if (rup == 12) result = "Twelve";
            if (rup == 13) result = "Thirteen";
            if (rup == 14) result = "Forteen";
            if (rup == 15) result = "Fifteen";
            if (rup == 16) result = "Sixteen";
            if (rup == 17) result = "Seventeen";
            if (rup == 18) result = "Eighteen";
            if (rup == 19) result = "Nineteen";
        }
        if (rup > 20 && (rup / 10) == 2 && (rup % 10) == 0) result = "Twenty";
        if (rup > 20 && (rup / 10) == 3 && (rup % 10) == 0) result = "Thirty";
        if (rup > 20 && (rup / 10) == 4 && (rup % 10) == 0) result = "Forty";
        if (rup > 20 && (rup / 10) == 5 && (rup % 10) == 0) result = "Fifty";
        if (rup > 20 && (rup / 10) == 6 && (rup % 10) == 0) result = "Sixty";
        if (rup > 20 && (rup / 10) == 7 && (rup % 10) == 0) result = "Seventy";
        if (rup > 20 && (rup / 10) == 8 && (rup % 10) == 0) result = "Eighty";
        if (rup > 20 && (rup / 10) == 9 && (rup % 10) == 0) result = "Ninty";

        if (rup > 20 && (rup / 10) == 2 && (rup % 10) != 0)
        {
            if ((rup % 10) == 1) result = "Twenty One";
            if ((rup % 10) == 2) result = "Twenty Two";
            if ((rup % 10) == 3) result = "Twenty Three";
            if ((rup % 10) == 4) result = "Twenty Four";
            if ((rup % 10) == 5) result = "Twenty Five";
            if ((rup % 10) == 6) result = "Twenty Six";
            if ((rup % 10) == 7) result = "Twenty Seven";
            if ((rup % 10) == 8) result = "Twenty Eight";
            if ((rup % 10) == 9) result = "Twenty Nine";
        }
        if (rup > 20 && (rup / 10) == 3 && (rup % 10) != 0)
        {
            if ((rup % 10) == 1) result = "Thirty One";
            if ((rup % 10) == 2) result = "Thirty Two";
            if ((rup % 10) == 3) result = "Thirty Three";
            if ((rup % 10) == 4) result = "Thirty Four";
            if ((rup % 10) == 5) result = "Thirty Five";
            if ((rup % 10) == 6) result = "Thirty Six";
            if ((rup % 10) == 7) result = "Thirty Seven";
            if ((rup % 10) == 8) result = "Thirty Eight";
            if ((rup % 10) == 9) result = "Thirty Nine";
        }
        if (rup > 20 && (rup / 10) == 4 && (rup % 10) != 0)
        {
            if ((rup % 10) == 1) result = "Forty One";
            if ((rup % 10) == 2) result = "Forty Two";
            if ((rup % 10) == 3) result = "Forty Three";
            if ((rup % 10) == 4) result = "Forty Four";
            if ((rup % 10) == 5) result = "Forty Five";
            if ((rup % 10) == 6) result = "Forty Six";
            if ((rup % 10) == 7) result = "Forty Seven";
            if ((rup % 10) == 8) result = "Forty Eight";
            if ((rup % 10) == 9) result = "Forty Nine";
        }
        if (rup > 20 && (rup / 10) == 5 && (rup % 10) != 0)
        {
            if ((rup % 10) == 1) result = "Fifty One";
            if ((rup % 10) == 2) result = "Fifty Two";
            if ((rup % 10) == 3) result = "Fifty Three";
            if ((rup % 10) == 4) result = "Fifty Four";
            if ((rup % 10) == 5) result = "Fifty Five";
            if ((rup % 10) == 6) result = "Fifty Six";
            if ((rup % 10) == 7) result = "Fifty Seven";
            if ((rup % 10) == 8) result = "Fifty Eight";
            if ((rup % 10) == 9) result = "Fifty Nine";
        }
        if (rup > 20 && (rup / 10) == 6 && (rup % 10) != 0)
        {
            if ((rup % 10) == 1) result = "Sixty One";
            if ((rup % 10) == 2) result = "Sixty Two";
            if ((rup % 10) == 3) result = "Sixty Three";
            if ((rup % 10) == 4) result = "Sixty Four";
            if ((rup % 10) == 5) result = "Sixty Five";
            if ((rup % 10) == 6) result = "Sixty Six";
            if ((rup % 10) == 7) result = "Sixty Seven";
            if ((rup % 10) == 8) result = "Sixty Eight";
            if ((rup % 10) == 9) result = "Sixty Nine";
        }
        if (rup > 20 && (rup / 10) == 7 && (rup % 10) != 0)
        {
            if ((rup % 10) == 1) result = "Seventy One";
            if ((rup % 10) == 2) result = "Seventy Two";
            if ((rup % 10) == 3) result = "Seventy Three";
            if ((rup % 10) == 4) result = "Seventy Four";
            if ((rup % 10) == 5) result = "Seventy Five";
            if ((rup % 10) == 6) result = "Seventy Six";
            if ((rup % 10) == 7) result = "Seventy Seven";
            if ((rup % 10) == 8) result = "Seventy Eight";
            if ((rup % 10) == 9) result = "Seventy Nine";
        }
        if (rup > 20 && (rup / 10) == 8 && (rup % 10) != 0)
        {
            if ((rup % 10) == 1) result = "Eighty One";
            if ((rup % 10) == 2) result = "Eighty Two";
            if ((rup % 10) == 3) result = "Eighty Three";
            if ((rup % 10) == 4) result = "Eighty Four";
            if ((rup % 10) == 5) result = "Eighty Five";
            if ((rup % 10) == 6) result = "Eighty Six";
            if ((rup % 10) == 7) result = "Eighty Seven";
            if ((rup % 10) == 8) result = "Eighty Eight";
            if ((rup % 10) == 9) result = "Eighty Nine";
        }
        if (rup > 20 && (rup / 10) == 9 && (rup % 10) != 0)
        {
            if ((rup % 10) == 1) result = "Ninty One";
            if ((rup % 10) == 2) result = "Ninty Two";
            if ((rup % 10) == 3) result = "Ninty Three";
            if ((rup % 10) == 4) result = "Ninty Four";
            if ((rup % 10) == 5) result = "Ninty Five";
            if ((rup % 10) == 6) result = "Ninty Six";
            if ((rup % 10) == 7) result = "Ninty Seven";
            if ((rup % 10) == 8) result = "Ninty Eight";
            if ((rup % 10) == 9) result = "Ninty Nine";
        }
        return result;
    }