Question

我正在寻找这个问题，但却找不到我需要的东西。我需要在Web API中使用Entity Framework模型来获取XML请求和响应。

我有两个有一对多关系的课程：

[Serializable]
[DataContract(Name = "shepherd")]
[KnownTypeAttribute(typeof(Sheep))]
public partial class Shepherd
{
        public Shepherd()
        {
            this.Sheep = new HashSet<Sheep>();
        }

        [DataMember(Name = "shepherdId")]
        //[XmlElement("shepherdId")]
        public int Id { get; set; }
        [DataMember(Name = "name")]
        //[XmlElement("name")]
        public string Name { get; set; }
        [DataMember(Name = "isDeleted")]
        //[XmlElement("IsDeleted")]
        public Nullable<bool> IsDeleted { get; set; }
        [DataMember(Name = "sheeps")]
        //[XmlArray("sheeps"), XmlArrayItem("sheep")]
        public virtual ICollection<Sheep> Sheep { get; set; }
    }

这是第二堂课：

[DataContract(Name = "sheep")]
[KnownType(typeof(Shepherd))]
public partial class Sheep
{
        [DataMember(Name = "id")]
        //[XmlElement("id")]
        public int Id { get; set; }
        [DataMember(Name = "colour")]
        // [XmlElement("colour")]
        public string Colour { get; set; }
        [DataMember(Name = "createdon")]
        //[XmlElement("CreatedOn")]
        public Nullable<System.DateTime> CreatedOn { get; set; }
        public int Shepherd { get; set; }
        [IgnoreDataMember]
        public virtual Shepherd Shepherd1 { get; set; }
}

我总是得到这个错误：

＆＃39; ObjectContent`1＆＃39;类型无法序列化内容类型＆＃39; application / xml的响应正文;字符集= UTF-8＆＃39 ;.
  System.InvalidOperationException

键入＆＃39; System.Data.Entity.DynamicProxies.Shepherd_EF797FA5FAF7ACF0AF313B6DFF83AF6E5F2EE1AD57BC457F9C10E73BA5DEEFE6＆＃39;数据合同名称＆＃39; Shepherd_EF797FA5FAF7ACF0AF313B6DFF83AF6E5F2EE1AD57BC457F9C10E73BA5DEEFE6：http://schemas.datacontract.org/2004/07/System.Data.Entity.DynamicProxies＆＃39;不是预期的。考虑使用DataContractResolver或将任何静态未知的类型添加到已知类型列表中 - 例如，使用KnownTypeAttribute属性或将它们添加到传递给DataContractSerializer的已知类型列表中。

我只需要获取XML而不是Json

无法序列化Entity Framework类webapi

0 个答案: