[英]DataContract with inheritance?
我有一个类,其中包含序列化和反序列化的对象列表:
[DataContract]
public class Manager
{
[DataMember]
public BigBase[] enemies;
}
具有子类的类:
[DataContract]
[KnownType(typeof(Medium))]
[KnownType(typeof(Small))]
public class BigBase
{
[DataMember]
public bool isMoving;
}
[DataContract]
public class Medium : BigBase
{
}
[DataContract]
public class Small: BigBase
{
}
现在,当反序列化enemies数组时,它会包含正确反序列化的BigBase类,但每个Medium和Small类都没有正确的isMoving值。
您需要在Manager
上放置KnownType
属性:
[DataContract]
[KnownType(typeof(Medium))]
[KnownType(typeof(Small))]
public class Manager
{
[DataMember]
public BigBase[] enemies;
}
因为它是具有BigBase
数组的Manager,其元素也可能是派生类。 因此,当序列化和反序列化Manager
对象时, DataContractSerializer
将知道对数组的期望(并且它是所有DataMember
)。
[DataContract]
public class Medium : BigBase
{
[DataMember]
public string UpgradedName;
}
我在这个测试代码中没有看到。 我认为你的序列化代码是错误的。
示例电话:
Manager test = new Manager();
Medium medium = new Medium() {isMoving = true,Name = "medium", UpgradedName = "mediaum name"};
//some items in array
test.enemies = new BigBase[] {medium,new Small{isMoving = false},new Small{isMoving = true}, new BigBase {Name = "bigbase", isMoving = true}, new BigBase {Name = "bigbase2", isMoving = true}, new BigBase {Name = "bigbase3", isMoving = true}} ;
DataContractSerializer serializer = new DataContractSerializer(typeof (Manager));
FileStream writer = new FileStream("test123.txt", FileMode.Create);
serializer.WriteObject(writer, test);
writer.Close();
writer = new FileStream("test123.txt", FileMode.Open);
Manager deserializedmanager = serializer.ReadObject(writer) as Manager;
//verify serialized object
Console.WriteLine("medium object:"+ (deserializedmanager.enemies[0] as Medium).UpgradedName);
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