我已经通过 msdn:datacontracts 进行了公平的阅读,但我不知道为什么以下内容不起作用。那么这里有什么问题呢?为什么 Datacontract 序列化程序无法识别 ExtendedCanadianAddress?
不应使用数据合同名称“CanadianAddress: http://tempuri.org/Common/Types ”键入“XYZ.ExtendedCanadianAddress”。将任何静态未知的类型添加到已知类型列表中 - 例如,通过使用 KnownTypeAttribute 属性或将它们添加到传递给 DataContractSerializer 的已知类型列表中。
鉴于:
namespace ABC
{
[KnownType(typeof(Address))]
public abstract class Z
{
//stuff
//method that adds all types() in namespace to self
}
[KnownType(typeof(CanadianAddress))]
[DataContract(Name = "Address", Namespace = "http://tempuri.org/Types")]
public class Address : Z
{}
[DataContract(Name = "CanadianAddress", Namespace = "http://tempuri.org/Types")]
public class CanadianAddress : Address
{}
}
namespace XYZ
{
[KnownType(typeof(ExtendedCanadianAddress))
[DataContract(Name = "Address", Namespace = "http://tempuri.org/Types")]
public class ExtendedAddress : Address
{
//this serializes just fine
}
[DataContract(Name = "CanadianAddress", Namespace = "http://tempuri.org/Types")]
public class ExtendedCanadianAddress : CanadianAddress
{
//will NOT serialize
}
}