C# 财产';在XML反序列化时,将丢弃s派生类(即用基类替换)
我有一个游戏数据类,如下所示:C# 财产';在XML反序列化时,将丢弃s派生类(即用基类替换),c#,xml,serialization,deserialization,xml-deserialization,C#,Xml,Serialization,Deserialization,Xml Deserialization,我有一个游戏数据类,如下所示: public class SaveGameData { public virtual List<PropertyContainer> properties {get; set; } } 我正在尝试在播放会话之间保存/加载这些数据,我在这个过程中使用XML序列化/反序列化 问题在于,在PropertyContainer类中,派生属性有时用于property类的子分区,如下所示: PropertyContainer container
public class SaveGameData {
public virtual List<PropertyContainer> properties {get; set; }
}
我正在尝试在播放会话之间保存/加载这些数据,我在这个过程中使用XML序列化/反序列化
问题在于,在PropertyContainer类中,派生属性有时用于property类的子分区,如下所示:
PropertyContainer container = new PropertyContainer();
container.property = derivedProperty;
<?xml version="1.0" encoding="utf-16"?>
<SaveGameData xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<properties>
<PropertyContainer>
<property xsi:type="DerivedProperty">
<BasePropertyData>1</BasePropertyData>
<DerivedPropertyData>1</DerivedPropertyData>
</property>
</PropertyContainer>
</properties>
</SaveGameData>
当容器被序列化时,派生类及其特殊属性也会被保存,这里没有问题
以下是序列化代码:
serializer = new System.Xml.Serialization.XmlSerializer(typeof(SaveGameData));
SaveGameData dataToSave = GetSaveGameData();
using (var stream = new StringWriter()) {
serializer.Serialize(stream, dataToSave);
...write to file...
}
序列化过程似乎正在工作,因为派生类被正确识别并保存到XML文件中,XML输出如下所示:
PropertyContainer container = new PropertyContainer();
container.property = derivedProperty;
<?xml version="1.0" encoding="utf-16"?>
<SaveGameData xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<properties>
<PropertyContainer>
<property xsi:type="DerivedProperty">
<BasePropertyData>1</BasePropertyData>
<DerivedPropertyData>1</DerivedPropertyData>
</property>
</PropertyContainer>
</properties>
</SaveGameData>
这意味着加载XML数据后,对派生属性调用GetType()
(例如saveGameData.properties[0].GetType()
,假设该属性是DerivedProperty)将生成基类,即属性
;通过扩展,它将丢弃所有DerivedProperty的属性。这就是问题所在
附言:
我尝试添加xmlclude
属性,但没有任何更改:
[System.Xml.Serialization.XmlInclude(typeof(DerivedProperty))]
public class Property {
...
}
我如何解决这个问题?是否有一种可行的方法替代我的方法?一种选择是切换到。然后使用来识别子类
public class PropertyContainer {
public Property property {get; set; }//Could be set to DerivedProperty
}
[KnownType(typeof(DerivedProperty))]
public class Property {
public int BasePropertyData {get; set;}
}
public class DerivedProperty : Property {
public int DerivedPropertyData {get; set; }
}
用
[xmlclude(typeof(DerivedProperty))]
装饰属性
类应该是可行的。实际上,如果没有它,XmlSerializer
甚至不允许您首先序列化DerivedProperty
以下程序是基于您的代码的工作示例。请确认您的机器上的控制台输出也是True
。如果是,则需要确定代码与原始尝试之间的差异。然后更新您的问题,以便我们可以更深入地挖掘
using System;
using System.Collections.Generic;
using System.IO;
using System.Xml.Serialization;
class Program
{
static void Main()
{
string savedGame = @"
<SaveGameData xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance'>
<properties>
<PropertyContainer>
<property xsi:type='DerivedProperty'>
<BasePropertyData>1</BasePropertyData>
<DerivedPropertyData>1</DerivedPropertyData>
</property>
</PropertyContainer>
</properties>
</SaveGameData>";
XmlSerializer serializer = new XmlSerializer(typeof(SaveGameData));
SaveGameData result;
using (StringReader stream = new StringReader(savedGame))
{
result = (SaveGameData)serializer.Deserialize(stream);
}
Console.WriteLine(result.properties[0].property is DerivedProperty); // True
}
}
public class SaveGameData
{
public virtual List<PropertyContainer> properties { get; set; }
}
public class PropertyContainer
{
public Property property { get; set; }//Could be set to DerivedProperty
}
[XmlInclude(typeof(DerivedProperty))]
public class Property
{
public int BasePropertyData { get; set; }
}
public class DerivedProperty : Property
{
public int DerivedPropertyData { get; set; }
}
使用系统;
使用System.Collections.Generic;
使用System.IO;
使用System.Xml.Serialization;
班级计划
{
静态void Main()
{
字符串savedGame=@”
1.
1.
";
XmlSerializer serializer=新的XmlSerializer(typeof(SaveGameData));
保存游戏数据结果;
使用(StringReader流=新StringReader(SavedName))
{
结果=(SaveGameData)序列化程序。反序列化(流);
}
Console.WriteLine(result.properties[0]。属性为DerivedProperty);//True
}
}
公共类SaveGameData
{
公共虚拟列表属性{get;set;}
}
公共类属性容器
{
公共属性属性{get;set;}//可以设置为DerivedProperty
}
[xmlclude(typeof(DerivedProperty))]
公共类财产
{
public int BasePropertyData{get;set;}
}
公共类派生属性:属性
{
public int-DerivedPropertyData{get;set;}
}
我不完全确定这个不存在的bug是如何通过我的,但它肯定是在浪费我的时间。谢谢你指出这一点。