for (var i = 0; i < dt.Rows.Count; i++) { double SaleAmount = 0; Double.TryParse(dt.Rows[i]["SaleAmount"].ToString(), out SaleAmount); oEnterprise.SaleAmount = SaleAmount; double RegCapital = 0; Double.TryParse(dt.Rows[i]["RegCapital"].ToString(), out RegCapital); oEnterprise.RegCapital = RegCapital; }