To filter the value from the Data Table

            DataSet DSDocumentationFee = SelectLeaseDocumentationFeeSlabDetails();
            DataTable DTDocumentationFee = DSDocumentationFee.Tables[0];
            DataRow[] rows = DTDocumentationFee.Select("LeaseCostFrom <= " + LeaseCost + " AND  LeaseCostTo >=" + LeaseCost);
            DocumentationFee = Convert.ToDouble(rows[0]["DocumentationFeeAmount"]);