XmlIgnore的使用

public class Group
{

    public string GroupName;
    [XmlIgnore]
    public string Comments;
}

在序列化时，其结果如下所示

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

我们可以看到，因为设置了XmlIgnore,所以Comments没有被序列化。对于已经设置了XmlIgnore的属性，也可以通过XmlAttributeOverrides 来重新第一序列化时是否需要序列化。

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

    attrs.XmlIgnore = true;
    overr.Add(typeof(Group), "Comments", attrs);

    attrs = new XmlAttributes();
    attrs.XmlIgnore = false;
    overr.Add(typeof(Group), "GroupName", attrs);

    XmlSerializer serilizer = new XmlSerializer(typeof(Group), overr);
    return serilizer;
}
public void SerializeObject(string filename)
{
    XmlSerializer serializer = CreateOverrider();
    Group group = new Group();
    group.GroupName = ".Net";
    group.Comments = "Microsoft .net 3.5";

    StreamWriter writer = new StreamWriter(filename);
    serializer.Serialize(writer, group);
    writer.Close();
}

这段代码，其结果与上面的相反，序列化了Comments,而不包含GroupName.