是否可以隱藏繼承的數據成員？

Question

我有兩個班。基類具有帶DataMember的公共屬性。現在，我不希望此屬性在子類中被序列化。我無法控制父類，還有其他幾個類繼承自它。

有沒有辦法從WCF使用的XmlSerializer中「隱藏」這個屬性？ （這裏的上下文是一個WCF RESTful Web服務）。

Answer 1

是的，可以使用XmlAttributeOverrides類和XmlIgnore屬性。下面是基於所述一個從所述MSDN例如：

public class GroupBase 
{ 
    public string GroupName; 

    public string Comment; 
} 

public class GroupDerived : GroupBase 
{ 
} 

public class Test 
{ 
    public static void Main() 
    { 
     Test t = new Test(); 
     t.SerializeObject("IgnoreXml.xml"); 
    } 

    public XmlSerializer CreateOverrider() 
    { 
     XmlAttributeOverrides xOver = new XmlAttributeOverrides(); 
     XmlAttributes attrs = new XmlAttributes(); 

     attrs.XmlIgnore = true; //Ignore the property on serialization 

     xOver.Add(typeof(GroupDerived), "Comment", attrs); 

     XmlSerializer xSer = new XmlSerializer(typeof(GroupDerived), xOver); 
     return xSer; 
    } 

    public void SerializeObject(string filename) 
    { 
     XmlSerializer xSer = CreateOverrider(); 

     GroupDerived myGroup = new GroupDerived(); 
     myGroup.GroupName = ".NET"; 
     myGroup.Comment = "My Comment..."; 

     TextWriter writer = new StreamWriter(filename); 

     xSer.Serialize(writer, myGroup); 
     writer.Close(); 
    } 

---

結果：

<?xml version="1.0" encoding="utf-8"?> 
<GroupDerived xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
       xmlns:xsd="http://www.w3.org/2001/XMLSchema"> 
    <GroupName>.NET</GroupName> 
</GroupDerived> 

---

結果與XmlIgnore = false;：

<?xml version="1.0" encoding="utf-8"?> 
<GroupDerived xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
       xmlns:xsd="http://www.w3.org/2001/XMLSchema"> 
    <GroupName>.NET</GroupName> 
    <Comment>My Comment...</Comment> 
</GroupDerived>