Convert Currency Decimal Value into Words 100% Working for Asp.net c# by Anuj Mehta

            DataTable dt2 = new DataTable();
            dt2 = objPurchaseOrderBL.Select_PurchaseMaterialdetail(objPurchaseOrderBO);
            rptr.DataSource = dt2;
            rptr.DataBind();
            DataTable dt5 = new DataTable();
            dt5 = objPurchaseOrderBL.Select_PurchaseOrderByTypeId(objPurchaseOrderBO);
            rptr.DataSource = dt5;
            rptr.DataBind();
            decimal totalMarks = dt5.Select().Sum(p => Convert.ToDecimal(p["Total"]));
            (rptr.Controls[rptr.Controls.Count - 1].Controls[0].FindControl("lblTotalValue") as Label).Text = totalMarks.ToString();
            decimal TotalTaxableValue = dt5.Select().Sum(p => Convert.ToDecimal(p["TaxableValue"]));
            (rptr.Controls[rptr.Controls.Count - 1].Controls[0].FindControl("lblTaxableValue") as Label).Text = TotalTaxableValue.ToString();
            decimal TotalBeforeTax = dt5.Select().Sum(p => Convert.ToDecimal(p["TaxableValue"]));
            (rptr.Controls[rptr.Controls.Count - 1].Controls[0].FindControl("lblTotalBeforeTaxValue") as Label).Text = TotalBeforeTax.ToString();
            decimal totalsgst = dt5.Select().Sum(p => Convert.ToDecimal(p["Sgst"]));
            (rptr.Controls[rptr.Controls.Count - 1].Controls[0].FindControl("lblsgst") as Label).Text = totalsgst.ToString();
            decimal totalcgst = dt5.Select().Sum(p => Convert.ToDecimal(p["Cgst"]));
            (rptr.Controls[rptr.Controls.Count - 1].Controls[0].FindControl("lblcgst") as Label).Text = totalcgst.ToString();
            decimal totaligst = dt5.Select().Sum(p => Convert.ToDecimal(p["Igst"]));
            (rptr.Controls[rptr.Controls.Count - 1].Controls[0].FindControl("lbligst") as Label).Text = totaligst.ToString();
            decimal GstTotalSum = totalsgst + totalcgst + totaligst;
            (rptr.Controls[rptr.Controls.Count - 1].Controls[0].FindControl("totalTaxValue") as Label).Text = GstTotalSum.ToString();
            decimal TotalAfterTax = dt5.Select().Sum(p => Convert.ToDecimal(p["Total"]));
            (rptr.Controls[rptr.Controls.Count - 1].Controls[0].FindControl("lblTotalAfterTax") as Label).Text = TotalAfterTax.ToString();
            //rupees in word

            (rptr.Controls[rptr.Controls.Count - 1].Controls[0].FindControl("lblTotalinWordValule") as Label).Text = AmountInWords(TotalAfterTax);


****************************************************************************

    public string AmountInWords(decimal Num)
    {
        string returnValue;
        //I have created this function for converting amount in indian rupees (INR).
        //You can manipulate as you wish like decimal setting, Doller (any currency) Prefix.


        string strNum;
        string strNumDec;
        string StrWord;
        strNum = Num.ToString();


        if (strNum.IndexOf(".") + 1 != 0)
        {
            strNumDec = strNum.Substring(strNum.IndexOf(".") + 2 - 1);


            if (strNumDec.Length == 1)
            {
                strNumDec = strNumDec + "0";
            }
            if (strNumDec.Length > 2)
            {
                strNumDec = strNumDec.Substring(0, 2);
            }


            strNum = strNum.Substring(0, strNum.IndexOf(".") + 0);
            StrWord = ((double.Parse(strNum) == 1) ? " Rupee " : " Rupees ") + NumToWord((decimal)(double.Parse(strNum))) + ((double.Parse(strNumDec) > 0) ? (" and Paise" + cWord3((decimal)(double.Parse(strNumDec)))) : "");
        }
        else
        {
            StrWord = ((double.Parse(strNum) == 1) ? " Rupee " : " Rupees ") + NumToWord((decimal)(double.Parse(strNum)));
        }
        returnValue = StrWord + " Only";
        return returnValue;
    }
    static public string NumToWord(decimal Num)
    {
        string returnValue;


        //I divided this function in two part.
        //1. Three or less digit number.
        //2. more than three digit number.
        string strNum;
        string StrWord;
        strNum = Num.ToString();


        if (strNum.Length <= 3)
        {
            StrWord = cWord3((decimal)(double.Parse(strNum)));
        }
        else
        {
            StrWord = cWordG3((decimal)(double.Parse(strNum.Substring(0, strNum.Length - 3)))) + " " + cWord3((decimal)(double.Parse(strNum.Substring(strNum.Length - 2 - 1))));
        }
        returnValue = StrWord;
        return returnValue;
    }
    static public string cWordG3(decimal Num)
    {
        string returnValue;
        //2. more than three digit number.
        string strNum = "";
        string StrWord = "";
        string readNum = "";
        strNum = Num.ToString();
        if (strNum.Length % 2 != 0)
        {
            readNum = System.Convert.ToString(double.Parse(strNum.Substring(0, 1)));
            if (readNum != "0")
            {
                StrWord = retWord(decimal.Parse(readNum));
                readNum = System.Convert.ToString(double.Parse("1" + strReplicate("0", strNum.Length - 1) + "000"));
                StrWord = StrWord + " " + retWord(decimal.Parse(readNum));
            }
            strNum = strNum.Substring(1);
        }
        while (!System.Convert.ToBoolean(strNum.Length == 0))
        {
            readNum = System.Convert.ToString(double.Parse(strNum.Substring(0, 2)));
            if (readNum != "0")
            {
                StrWord = StrWord + " " + cWord3(decimal.Parse(readNum));
                readNum = System.Convert.ToString(double.Parse("1" + strReplicate("0", strNum.Length - 2) + "000"));
                StrWord = StrWord + " " + retWord(decimal.Parse(readNum));
            }
            strNum = strNum.Substring(2);
        }
        returnValue = StrWord;
        return returnValue;
    }
    static public string cWord3(decimal Num)
    {
        string returnValue;
        //1. Three or less digit number.
        string strNum = "";
        string StrWord = "";
        string readNum = "";
        if (Num < 0)
        {
            Num = Num * -1;
        }
        strNum = Num.ToString();


        if (strNum.Length == 3)
        {
            readNum = System.Convert.ToString(double.Parse(strNum.Substring(0, 1)));
            StrWord = retWord(decimal.Parse(readNum)) + " Hundred";
            strNum = strNum.Substring(1, strNum.Length - 1);
        }


        if (strNum.Length <= 2)
        {
            if (double.Parse(strNum) >= 0 && double.Parse(strNum) <= 20)
            {
                StrWord = StrWord + " " + retWord((decimal)(double.Parse(strNum)));
            }
            else
            {
                StrWord = StrWord + " " + retWord((decimal)(System.Convert.ToDouble(strNum.Substring(0, 1) + "0"))) + " " + retWord((decimal)(double.Parse(strNum.Substring(1, 1))));
            }
        }


        strNum = Num.ToString();
        returnValue = StrWord;
        return returnValue;
    }
    static public string retWord(decimal Num)
    {
        string returnValue;
        //This two dimensional array store the primary word convertion of number.
        returnValue = "";
        object[,] ArrWordList = new object[,] { { 0, "" }, { 1, "One" }, { 2, "Two" }, { 3, "Three" }, { 4, "Four" }, { 5, "Five" }, { 6, "Six" }, { 7, "Seven" }, { 8, "Eight" }, { 9, "Nine" }, { 10, "Ten" }, { 11, "Eleven" }, { 12, "Twelve" }, { 13, "Thirteen" }, { 14, "Fourteen" }, { 15, "Fifteen" }, { 16, "Sixteen" }, { 17, "Seventeen" }, { 18, "Eighteen" }, { 19, "Nineteen" }, { 20, "Twenty" }, { 30, "Thirty" }, { 40, "Forty" }, { 50, "Fifty" }, { 60, "Sixty" }, { 70, "Seventy" }, { 80, "Eighty" }, { 90, "Ninety" }, { 100, "Hundred" }, { 1000, "Thousand" }, { 100000, "Lakh" }, { 10000000, "Crore" } };


        int i;
        for (i = 0; i <= (ArrWordList.Length - 1); i++)
        {
            if (Num == System.Convert.ToDecimal(ArrWordList[i, 0]))
            {
                returnValue = (string)(ArrWordList[i, 1]);
                break;
            }
        }
        return returnValue;
    }
    static public string strReplicate(string str, int intD)
    {
        string returnValue;
        //This fucntion padded "0" after the number to evaluate hundred, thousand and on....
        //using this function you can replicate any Charactor with given string.
        int i;
        returnValue = "";
        for (i = 1; i <= intD; i++)
        {
            returnValue = returnValue + str;
        }
        return returnValue;
    }