无法在C＃中序列化Color属性

Question

我正在尝试序列化一堆对象。我设计了一个较小的示例代码来调试问题，我希望在其中保存自定义链接的颜色，即CustomLink(Color.Blue)

以下是主要类 -

public class Factory
{
    CustomLink customLink = new CustomLink(Color.Blue); // This color is not getting serialized

    static Type[] xMLSerializationTypes = { typeof(CustomLink) };
    static void Main(string[] args)
    {
        Factory factory = new Factory();
        XmlSerializer serializer = new XmlSerializer(typeof(Factory), xMLSerializationTypes);
        TextWriter textWriter = new StreamWriter(@"D:\test.xml");
        serializer.Serialize(textWriter, factory);
        textWriter.Close();
    }

    public CustomLink CustomLink
    {
        set { customLink = value; }
        get { return customLink; }
    }
}

以下是其余的课程 -

public class CustomLink : Link
{
    public CustomLink() { }
    public CustomLink(Color color)
    {
        GraphicProperty.Color = color;
    }
}
public class Link
{
    GraphicProperty graphicProperty = new GraphicProperty();
    public GraphicProperty GraphicProperty
    {
        set { graphicProperty = value; }
        get { return graphicProperty; }
    }
}
public class GraphicProperty
{
    Color color;
    public GraphicProperty() { }
    public Color Color
    {
        set { color = value; }
        get { return color; }
    }
}

下面是输出，它不包含任何颜色信息 -

<?xml version="1.0" encoding="utf-8"?>
<Factory xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
  <CustomLink>
    <GraphicProperty>
      <Color />
    </GraphicProperty>
  </CustomLink>
</Factory>