Calculate Row total while Searching in jQuery DataTable plugin

string strtHeader = "";
        string strCloseTableTag = "</table>";
        string strOpenTableTag = "<table class='hover compact order-column cell-border' cellspacing='0' width='100%' id='sample_2'>";


        #region sql string for colno == 8
        {
            strtHeader = "<thead><tr>"
             + "<th>S/No</th>"
             + "<th>Staff ID</th>"
             + "<th>Surname</th>"
             + "<th>Othernames</th>"
             + "<th>Course Fee</th>"
             + "<th>Accomodation</th>"
             + "<th>Transport</th>"
             + "<th>Feeding</th>"
             + "<th>Other Cost</th>"
             + "<th>Total</th>"
             + "</tr></thead>"

             + "<tfoot><tr>"
             + "<th>S/No</th>"
             + "<th>Staff ID</th>"
             + "<th>Surname</th>"
             + "<th>Othernames</th>"
             + "<th>Course Fee</th>"
             + "<th>Accomodation</th>"
             + "<th>Transport</th>"
             + "<th>Feeding</th>"
             + "<th>Other Cost</th>"
             + "<th>Total</th>"
             + " </tr> </tfoot>";
        }
        #endregion



        string strOpenTBody = "<tbody>";
        string strCloseTBody = "</tbody>";
        string strTR = "";
        string strFinalOutput = "";

        datafunctions dfs = new datafunctions();

        DataTable dtSearch = new DataTable();
        dtSearch = dfs._dataTable_NoParameter(selectstatement);

        //if (dfs.sqlUserError.Trim() != "") return dfs.sqlUserError;

        if (dtSearch.Rows.Count > 0)
        {


            #region if col == 8
            {

                // re-arrange the rows
                for (int i = 0; i < dtSearch.Rows.Count; i++)
                {
                    strTR = strTR + "<tr >"
                        + "<td> " + " <span>" + (i + 1).ToString() + "</span> " + "</td>"
                        + "<td> <span class='lblStaffID' id='lblStaffID" + (i + 1).ToString() + "'>" + dtSearch.Rows[i][0].ToString().Trim() + "</span></td>"
                        + "<td> <span class='lblsurname' id='lblsurname" + (i + 1).ToString() + "'>" + dtSearch.Rows[i][1].ToString().Trim() + "</span></td>"
                        + "<td> <span class='lblothernames' id='lblothernames" + (i + 1).ToString() + "'>" + dtSearch.Rows[i][2].ToString().Trim() + "</span></td>"
                         + "<td> " + " <input name='txtcoursefee' onkeypress='return validateFloatKeyPress(this, event)' value=" + dtSearch.Rows[i][3].ToString().Trim() + " type='text' id='txtcoursefee" + (i + 1).ToString().Trim() + "' class='txtcoursefee'  style='width:100px;' /> " + "</td>"
                        + "<td> " + " <input name='txtaccomod' onkeypress='return validateFloatKeyPress(this, event)'  value=" + dtSearch.Rows[i][4].ToString().Trim() + " type='text' id='txtaccomod" + (i + 1).ToString().Trim() + "' class='txtaccomod'  style='width:100px;' /> " + "</td>"
                        + "<td> " + " <input name='txttranspot' onkeypress='return validateFloatKeyPress(this, event)'  value=" + dtSearch.Rows[i][5].ToString().Trim() + " type='text' id='txttranspot" + (i + 1).ToString().Trim() + "' class='txttranspot' style='width:100px;' /> " + "</td>"
                        + "<td> " + " <input name='txtfeeding' onkeypress='return validateFloatKeyPress(this, event)'  value=" + dtSearch.Rows[i][6].ToString().Trim() + " type='text' id='txtfeeding" + (i + 1).ToString().Trim() + "' class='txtfeeding' style='width:100px;' /> " + "</td>"
                        + "<td> " + " <input name='txtothercst' onkeypress='return validateFloatKeyPress(this, event)'  value=" + dtSearch.Rows[i][7].ToString().Trim() + " type='text' id='txtothercst" + (i + 1).ToString().Trim() + "' class='txtothercst' style='width:100px;' /> " + "</td>"
                        + "<td> " + " <input name='txttotcst' onkeypress='return validateFloatKeyPress(this, event)'  value=" + dtSearch.Rows[i][8].ToString().Trim() + " type='text' id='txttotcst" + (i + 1).ToString().Trim() + "' class='price_sum' style='width:100px;' disabled /> " + "</td>"
                        + "</tr>";

                }

            }
            #endregion


            strFinalOutput = strOpenTableTag + strtHeader + strOpenTBody + strTR.Trim() + strCloseTBody + strCloseTableTag;
        }
        else
        {
            //strFinalOutput = dfs.sqlUserError;
            strFinalOutput = "<div class='alert alert-info'>No List!.</div>";

        }
        dtSearch.Dispose();
        if (strFinalOutput.Trim() != "")
        {
            if (strFinalOutput.ToUpper().Trim().Contains("NO LIST!."))
            {
              //  lblerror.Text = "There is no staff.";
            }
            tablecontainer.InnerHtml = strFinalOutput;

        }
    }