我可以序列化可序列化对象的一般列表,而无需指定它们的类型。
类似于以下破损代码背后的意图:
List<ISerializable> serializableList = new List<ISerializable>(); XmlSerializer xmlSerializer = new XmlSerializer(serializableList.GetType()); serializableList.Add((ISerializable)PersonList); using (StreamWriter streamWriter = System.IO.File.CreateText(fileName)) { xmlSerializer.Serialize(streamWriter, serializableList); }
编辑:
对于那些想了解细节的人:当我尝试运行此代码时,它在XMLSerializer […]行上的错误如下:
无法序列化接口System.Runtime.Serialization.ISerializable。
如果我改变了List<object>我会得到"There was an error generating the XML document."。InnerException详细信息是"{"The type System.Collections.Generic.List1[[Project1.Person, ConsoleFramework, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]] may not be used in this context."}"
List<object>
"There was an error generating the XML document."
"{"The type System.Collections.Generic.List1[[Project1.Person, ConsoleFramework, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]] may not be used in this context."}"
人员对象定义如下:
[XmlRoot("Person")] public class Person { string _firstName = String.Empty; string _lastName = String.Empty; private Person() { } public Person(string lastName, string firstName) { _lastName = lastName; _firstName = firstName; } [XmlAttribute(DataType = "string", AttributeName = "LastName")] public string LastName { get { return _lastName; } set { _lastName = value; } } [XmlAttribute(DataType = "string", AttributeName = "FirstName")] public string FirstName { get { return _firstName; } set { _firstName = value; } } }
PersonList只是一个List<Person>。
List<Person>
不过,这只是用于测试,因此并不认为细节太重要。关键是我有一个或多个不同的对象,所有这些对象都是可序列化的。我想将它们全部序列化为一个文件。我认为最简单的方法是将它们放在通用列表中,然后一次性序列化列表。但这是行不通的。
我也尝试过List<IXmlSerializable>,但是失败了
List<IXmlSerializable>
System.Xml.Serialization.IXmlSerializable cannot be serialized because it does not have a parameterless constructor.
抱歉,缺少详细信息,但是我是一位初学者,不知道需要什么详细信息。如果人们要求更多细节,而试图以某种方式让我理解需要的细节或概述可能指示的基本答案,那将很有帮助。
也要 感谢 到目前为止我得到的两个答案-如果不理解这些主意,我本可以花更多的时间阅读。人们在此站点上的帮助程度令人惊讶。
我有一个带有动态绑定项的通用List <>的解决方案。
类PersonalList是根元素
[XmlRoot("PersonenListe")] [XmlInclude(typeof(Person))] // include type class Person public class PersonalList { [XmlArray("PersonenArray")] [XmlArrayItem("PersonObjekt")] public List<Person> Persons = new List<Person>(); [XmlElement("Listname")] public string Listname { get; set; } // Konstruktoren public PersonalList() { } public PersonalList(string name) { this.Listname = name; } public void AddPerson(Person person) { Persons.Add(person); } }
类Person这是一个列表元素
[XmlType("Person")] // define Type [XmlInclude(typeof(SpecialPerson)), XmlInclude(typeof(SuperPerson))] // include type class SpecialPerson and class SuperPerson public class Person { [XmlAttribute("PersID", DataType = "string")] public string ID { get; set; } [XmlElement("Name")] public string Name { get; set; } [XmlElement("City")] public string City { get; set; } [XmlElement("Age")] public int Age { get; set; } // Konstruktoren public Person() { } public Person(string name, string city, int age, string id) { this.Name = name; this.City = city; this.Age = age; this.ID = id; } }
类SpecialPerson继承Person
[XmlType("SpecialPerson")] // define Type public class SpecialPerson : Person { [XmlElement("SpecialInterests")] public string Interests { get; set; } public SpecialPerson() { } public SpecialPerson(string name, string city, int age, string id, string interests) { this.Name = name; this.City = city; this.Age = age; this.ID = id; this.Interests = interests; } }
类SuperPerson继承Person
[XmlType("SuperPerson")] // define Type public class SuperPerson : Person { [XmlArray("Skills")] [XmlArrayItem("Skill")] public List<String> Skills { get; set; } [XmlElement("Alias")] public string Alias { get; set; } public SuperPerson() { Skills = new List<String>(); } public SuperPerson(string name, string city, int age, string id, string[] skills, string alias) { Skills = new List<String>(); this.Name = name; this.City = city; this.Age = age; this.ID = id; foreach (string item in skills) { this.Skills.Add(item); } this.Alias = alias; } }
和主要的测试源
static void Main(string[] args) { PersonalList personen = new PersonalList(); personen.Listname = "Friends"; // normal person Person normPerson = new Person(); normPerson.ID = "0"; normPerson.Name = "Max Man"; normPerson.City = "Capitol City"; normPerson.Age = 33; // special person SpecialPerson specPerson = new SpecialPerson(); specPerson.ID = "1"; specPerson.Name = "Albert Einstein"; specPerson.City = "Ulm"; specPerson.Age = 36; specPerson.Interests = "Physics"; // super person SuperPerson supPerson = new SuperPerson(); supPerson.ID = "2"; supPerson.Name = "Superman"; supPerson.Alias = "Clark Kent"; supPerson.City = "Metropolis"; supPerson.Age = int.MaxValue; supPerson.Skills.Add("fly"); supPerson.Skills.Add("strong"); // Add Persons personen.AddPerson(normPerson); personen.AddPerson(specPerson); personen.AddPerson(supPerson); // Serialize Type[] personTypes = { typeof(Person), typeof(SpecialPerson), typeof(SuperPerson) }; XmlSerializer serializer = new XmlSerializer(typeof(PersonalList), personTypes); FileStream fs = new FileStream("Personenliste.xml", FileMode.Create); serializer.Serialize(fs, personen); fs.Close(); personen = null; // Deserialize fs = new FileStream("Personenliste.xml", FileMode.Open); personen = (PersonalList)serializer.Deserialize(fs); serializer.Serialize(Console.Out, personen); Console.ReadLine(); }
重要的是定义,并包括不同的类型。