C＃派生类的XML序列化

您好我正在尝试序列化从类派生的对象数组，我使用c＃继续遇到相同的错误。 任何帮助深表感谢。

很明显，这个例子已经按照现实世界中这篇文章的目的缩小了。形状将包含大量不同的形状。

Program.cs中

namespace XMLInheritTests { class Program { static void Main(string[] args) { Shape[] a = new Shape[1] { new Square(1) }; FileStream fS = new FileStream("C:\shape.xml", FileMode.OpenOrCreate); XmlSerializer xS = new XmlSerializer(a.GetType()); Console.WriteLine("writing"); try { xS.Serialize(fS, a); } catch (Exception e) { Console.WriteLine(e.InnerException.ToString()); Console.ReadKey(); } fS.Close(); Console.WriteLine("Fin"); } } } 

Shape.cs

 namespace XMLInheritTests { public abstract class Shape { public Shape() { } public int area; public int edges; } } 

Square.cs

 namespace XMLInheritTests { public class Square : Shape { public int iSize; public Square() { } public Square(int size) { iSize = size; edges = 4; area = size * size; } } } 

错误：System.InvalidOperationException：不期望XMLInheritTests.Square类型。 使用XmlInclude或SoapInclude属性指定静态未知的类型。

在Microsoft.Xml.Serialization.GeneratedAssembly.XmlSerializationWriterShapeA rray.Write2_Shape（String n，String ns，Shape o，Boolean isNullable，Boolean need Type）

在Microsoft.Xml.Serialization.GeneratedAssembly.XmlSerializationWriterShapeA rray.Write3_ArrayOfShape（Object o）

非常感谢

 [XmlInclude(typeof(Square))] public abstract class Shape {...} 

 class Program { static void Main(string[] args) { Shape[] a = new Shape[2] { new Square(1), new Triangle() }; FileStream fS = new FileStream("C:\shape.xml",FileMode.OpenOrCreate); //this could be much cleaner Type[] t = { a[1].GetType(), a[0].GetType() }; XmlSerializer xS = new XmlSerializer(a.GetType(),t); Console.WriteLine("writing"); try { xS.Serialize(fS, a); } catch (Exception e) { Console.WriteLine(e.InnerException.ToString()); Console.ReadKey(); } fS.Close(); Console.WriteLine("Fin"); } } namespace XMLInheritTests { [XmlInclude(typeof(Square))] [XmlInclude(typeof(Triangle))] public abstract class Shape { public Shape() { } public int area; public int edges; } }