public string GetCustomerName() { var buf = new StringBuilder(); var cBll = new CustomerBll(); var list = cBll.SearchListByValid(Utits.WelfareCentreID); buf.AppendFormat("<option value=\"{0}\">{1}</option>", "请选择", "==请选择=="); if (list != null) { foreach (var item in list) { buf.AppendFormat("<option value=\"{0}\">{1}</option>", item.ID, item.CustomerName); } } return(buf.ToString()); }