Question

我遇到了序列化问题。我的Silverlight应用程序不期望我的某个属性在业务对象中，并且不知道如何处理它。以前我通过设置KnownTypeAttribute解决了这个问题，如下例所示，但在这种情况下它不起作用。

我曾经这样解决过：

[DataContract(Name = "baseClass")]
public class baseClass { }

[DataContract(Name = "busObj1")]
public class busObj1 : baseClass { }

[DataContract(Name = "busObj2")]
[KnownType(typeof(busObj1))]
public class busObj2 : baseClass
{
    public busObj1 myObj { get; set; }
}

唯一不同的是，我的结构略有不同，如下所示：

[DataContract(Name = "baseClass")]
public class baseClass { }

[DataContract(Name = "busObj1")]
public class busObj1 : baseClass { }

[DataContract(Name = "busObj2")]
[KnownType(typeof(busObj1))]
public class busObj2 : baseClass
{
    public busObj1 myObj { get; set; }
}

// This is the class that I want to send via WCF and that cannot be serialized
// because the serializer doesn't expect busObj1.
[DataContract(Name = "busObj3")]
public class busObj3 : busObj2 { }

我非常感谢任何可能出错的想法！

问候，Clas

Answer 1

您需要将已知的type属性放在基础对象上：

[DataContract(Name = "baseClass")]
[KnownType(typeof(busObj1))]
[KnownType(typeof(busObj2))]
[KnownType(typeof(busObj3))]
[KnownType(typeof(busObj4))]
public class baseClass { }

[DataContract(Name = "busObj1")]
public class busObj1 : baseClass { }

[DataContract(Name = "busObj2")]
public class busObj2 : baseClass { }

[DataContract(Name = "busObj3")]
public class busObj3 : busObj1
{
    public busObj2 myObj { get; set; }
}

[DataContract(Name = "busObj4")]
public class busObj4 : busObj3 { }

或者如果您不想使用这些属性来污染您的域名模型，您也可以do it in your web.config or use the ServiceKnownType attribute on your Service Contract。

序列化不接受我的KnownTypeAttribute，为什么？

1 个答案: