XML 到 C# 类中的 StackOverflowException
我正在尝试基于以下 XML 代码在 C# 中创建一个类:
<?xml version="1.0" encoding="ISO-8859-1"?>
<Catalog>
<Book>
<Title><TitleA>ORK</TitleA></Title>
<Author>J.D. Salinger</Author>
<Publisher>Little Brown and Company</Publisher>
<Pub_Date>1951</Pub_Date>
</Book>
<Book>
<Title><TitleA>NAA</TitleA></Title>
<Author>Jan</Author>
<Publisher>Jans forlag</Publisher>
<Pub_Date>2011</Pub_Date>
</Book>
</Catalog>
我查看了此线程 XML 到 c# 的问题,但我一直没能解决这个问题。我的 C# 代码如下所示:
public class Catalog
{
public BookClass Book { get { return Book; } set { Book = value; } }
}
public class BookClass
{
public TitleClass Title { get { return Title; } set { Title = value; } }
public string Author { get { return Author; } set { Author = value; } }
public string Publisher { get { return Publisher; } set { Publisher = value; } }
public string Pub_Date { get { return Pub_Date; } set { Pub_Date = value; } }
}
public class TitleClass
{
public string TitleA { get { return TitleA; } set { TitleA = value; } }
}
我收到以下错误消息:
CADtoXML.exe 中发生类型为“System.StackOverflowException”的未处理异常
我尝试使用 XML 序列化程序,但没有成功;我认为这与 XML 代码中存在 at sub 子元素有关。书->标题->标题A.任何帮助将不胜感激。
更新 1:
我之前尝试过此解决方案,但后来出现此错误:对象引用未设置到对象的实例。我在主类中运行的代码如下
Catalog book1 = new Catalog();
book1.Book.Author = "A";
book1.Book.Publisher = "A";
book1.Book.Pub_Date = "A";
,之后我将它们导入到列表中并使用序列化器创建一个新的 XML 文件。
不知道这是否有帮助。
更新2:
像这样:
BookClass book1 = new BookClass();
book1.Author = "A";
book1.Publisher = "A";
book1.Pub_Date = "A";
book1.Title.TitleA = "A";
我仍然有同样的问题。我无法制作 book1.Title.TitleA,那么我必须这样做:
TitleClass book2 = new TitleClass();
book2.TitleA = "A";
但现在它们是两个不同的对象,book1 和 book2....并且它们基于两个不同的类,因此我不能使用这个(列出该对象,然后将其设置为 XML 代码:
List<BookClass, TitleClass> books = new List<BookClass, TitleClass>() { book1, book2 };
XmlSerializer x = new XmlSerializer(typeof(List<BookClass, TitleClass>), new XmlRootAttribute("TEST"));
x.Serialize(Console.Out, books);
我想这样做,因此我得到了带有 sub 子元素的 XML 代码,如我的第一篇文章中所示,
感谢迄今为止的帮助;)
I am trying to make a class in C# on the basis of the following XML code:
<?xml version="1.0" encoding="ISO-8859-1"?>
<Catalog>
<Book>
<Title><TitleA>ORK</TitleA></Title>
<Author>J.D. Salinger</Author>
<Publisher>Little Brown and Company</Publisher>
<Pub_Date>1951</Pub_Date>
</Book>
<Book>
<Title><TitleA>NAA</TitleA></Title>
<Author>Jan</Author>
<Publisher>Jans forlag</Publisher>
<Pub_Date>2011</Pub_Date>
</Book>
</Catalog>
I have looked on this thread XML to c# Question, but I have not been able to solve the problem. My c# code looks like this:
public class Catalog
{
public BookClass Book { get { return Book; } set { Book = value; } }
}
public class BookClass
{
public TitleClass Title { get { return Title; } set { Title = value; } }
public string Author { get { return Author; } set { Author = value; } }
public string Publisher { get { return Publisher; } set { Publisher = value; } }
public string Pub_Date { get { return Pub_Date; } set { Pub_Date = value; } }
}
public class TitleClass
{
public string TitleA { get { return TitleA; } set { TitleA = value; } }
}
I get the following error message:
An unhandled exception of type 'System.StackOverflowException' occurred in CADtoXML.exe
I have tried to use the XML serializer with no luck; I think it has something to do with the fact that there is at sub sub element in the XML code. Book -> Title -> TitleA. Any help will be greatly appreciated.
Update 1:
I have tried this solution before, but then i get this error: Object reference not set to an instance of an object. The code i am running in the main class is the following
Catalog book1 = new Catalog();
book1.Book.Author = "A";
book1.Book.Publisher = "A";
book1.Book.Pub_Date = "A";
And after this I import them to a list and use the Serializer to make a new XML file.
Don't know if this can help.
Update 2:
Like this:
BookClass book1 = new BookClass();
book1.Author = "A";
book1.Publisher = "A";
book1.Pub_Date = "A";
book1.Title.TitleA = "A";
I still have the same problem. I can't make the book1.Title.TitleA, then I have to do this:
TitleClass book2 = new TitleClass();
book2.TitleA = "A";
But now they are two different objects, book1 and book2.... And they are based on two different classes, and therefore I cannot use this (list the object and afterwards make it an XML code:
List<BookClass, TitleClass> books = new List<BookClass, TitleClass>() { book1, book2 };
XmlSerializer x = new XmlSerializer(typeof(List<BookClass, TitleClass>), new XmlRootAttribute("TEST"));
x.Serialize(Console.Out, books);
I want to do that, so I get my XML code, with the sub sub element, like presented in my first post.
Thanks for the help so far ;)
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您收到
StackOverflowException
是因为您的属性正在访问自身,这会导致某种无休止的递归:Book 属性调用 Book 属性调用 Book 属性调用 Book 属性...
您应该使用支持字段,或使用自动属性:
You're getting a
StackOverflowException
because your property is accessing itself, which results in some kind of endless recursion:The Book property calls the Book property calls the Book property calls the Book property ...
You should use a backing field, or use automatic properties instead: