WebApi XML,Json格式自定义，IEnumerable<T>，ArrayOf

        [XmlIgnore] //生成XML结果的时候，忽略该字段
        [JsonIgnore] //生成JSON结果的时候，忽略该字段
        public Guid Id { get; set; }

namespace ElegantWM.DTO
{
    [XmlRoot("EcResult")]
    //[XmlArrayItem("SmsReceived")]
    //[CollectionDataContract(Name = "EcResult", ItemName = "SmsReceived", Namespace = "")]
    public class EcSmsReceivedResult : List<EC_SmsReceived>
    {

    }
}

 [HttpPost]
        public EcSmsReceivedResult SmsReply()
        {
            EC_Customer customer = CheckCustomer();
            var list = WMFactory.SmsReceived.GetSmsReceived(customer.Id);
            EcSmsReceivedResult rst=new EcSmsReceivedResult();
            rst.AddRange(list);
            return rst;
        }