Question

我正在尝试序列化多边形列表。这个类包括3个公共字段：amountOfVertexes，List where Stroke -is我自己的类，List其中Point - 是C＃class。我不知道在哪里错误地将它序列化了？这是我的班级

    [XmlRoot("CustomPolygon")]
    public class CustomPolygon
    {
    #region Cunstructors
    public CustomPolygon()
    {
    }
    #endregion

    #region Public fields

    [XmlAttribute("amountOfVertexes")]
    public int amountOfVertexes;                   // Количество сторон полигона
    [XmlArray("Points")]
    [XmlArrayItem("Point")]
    public  List<Point> listOfVertexes;            // Список всех вершин
    [XmlArray("Strokes")]
    [XmlArrayItem("Stroke")]
    public List<Stroke> listOfStrokes;             // Список ребер
    #endregion

    #region Private fields
    private PointCollection Points;
    #endregion

我在Stroke中添加了相同的元素

  [XmlRoot("Stroke")]
   public class Stroke
   {
    #region Constructors
    public Stroke()
    {
        this.beginPoint = new Point();
        this.endPoint = new Point();
    }
    public Stroke(Point pBegin, Point pEnd)  
    {
        this.beginPoint = pBegin;
        this.endPoint = pEnd;
    }
    #endregion 

    #region Public Member Variables
    [XmlAttribute("beginPoint")]
    public Point beginPoint;            // Начальная точка отрезка 
    [XmlAttribute("endPoint")]
    public Point endPoint;              // Конечная точка отрезка
    #endregion
}

但我无法向Point类添加相同的元素（我的意思是[XmlAttribute]），因为它已关闭。我做错了什么？我正在尝试序列化此代码的帮助：

 using (StreamWriter writer = new StreamWriter(saveFileDialogPolygon.FileName))
 {
 XmlSerializer xmlSerializerCustom = new XmlSerializer(typeof (List <CustomPolygon>));
 xmlSerializerCustom.Serialize(writer,listOfCustomPolygons);
 }
 writer.Close();

我得到了“反射类型发生错误”可能是因为Point的错误？那么，我如何序列化（和desirialze）标准的Point类？

Answer 1

我过去遇到过类似的问题，请参阅： Build a Custom Serialization as String in System.Xml.Serialization。

我的解决方案适合你的情况将是这样的：

    [XmlIgnore]
    public List<Point> listOfVertexes;

    [XmlArray("Points")]
    [XmlArrayItem("Point")]
    public string[] listOfVertexesString
    {
        get { return listOfVertexes.Select(s => s.X + "," + s.Y).ToArray(); }
        set
        {
            listOfVertexes = value
                .Select(s => new Point
                {
                    X = int.Parse(s.Split(',')[0]),
                    Y = int.Parse(s.Split(',')[1])
                })
                .ToList();
        }
    }

这将生成这样的XML：

  <!-- something before -->
    <Points>
      <Point>0,1</Point>
      <Point>4,10</Point>
      <Point>3,5</Point>
    </Points>
  <!-- something after -->

Answer 2

非常感谢！我认为这是很好的体验！但问题不在于对象点的序列化！问题在于此代码

      using (StreamReader reader = new StreamReader(openFileDialog.FileName))
                {
                    // Найдем количество полигонов в Xml-файле
                    XmlDocument loadedXml = new XmlDocument();
                    string directory = openFileDialog.FileName;
                    loadedXml.Load(reader); **// I USE IT, BUT NO CLOSE!**
                    XmlNodeList polygonNodeList = loadedXml.GetElementsByTagName("CustomPolygon");

               if (polygonNodeList.Count > 1)
                    for (int i = 0; i < polygonNodeList.Count; i++)
                    {
                       // List <CustomPolygon> listcp= new List<CustomPolygon>();
             XmlSerializer xmlReader = new XmlSerializer(typeof (List<CustomPolygon>));
                 var listcp = (List<CustomPolygon>)xmlReader.Deserialize(reader);
                        }
               else
                    {
                        XmlSerializer xmlReaderResult = new XmlSerializer((typeof (CustomPolygon)));
                        CustomPolygon loadedResultPolygon = (CustomPolygon) xmlReaderResult.Deserialize(reader); **// MORE OVER I USE IT IN THIS PLACE, WITHOUT CLOSE()** BEFORE
                        resultOfTwoPolygonsUnion = loadedResultPolygon;
                    }
                    reader.Close();
                }

Answer 3

而不是它，我应该这样使用：

            StreamReader file=new StreamReader(openFileDialog.FileName);
            // Найдем количество полигонов в Xml-файле
            XmlDocument loadedXml = new XmlDocument();
            loadedXml.Load(file);
            XmlNodeList polygonNodeList = loadedXml.GetElementsByTagName("CustomPolygon");
            file.Close();

            using (StreamReader reader = new StreamReader(openFileDialog.FileName))
            {

                XmlSerializer xmlReader = new XmlSerializer(typeof(CustomPolygon));
                CustomPolygon resultPolygon = new CustomPolygon();
                resultPolygon = (CustomPolygon)xmlReader.Deserialize(reader);

            }

如何序列化Point

3 个答案: