为什么在 XML 反序列化函数中会出现此错误？

Question

我创建了两个函数，XML 序列化和反序列化。问题是我在反序列化时遇到错误。您可以在下面找到这些功能：

public string Serialize(Object o)
{
    using (var writer = new StringWriter())
    {
        new XmlSerializer(o.GetType()).Serialize(writer, o);
        return writer.ToString();
    }
}

public PathDetailsMessage Deserialize(string xml)
{
    using (TextReader reader = new StringReader(xml))
    {
         XmlSerializer serializer = new XmlSerializer(typeof(PathDetailsMessage));
         return (PathDetailsMessage)serializer.Deserialize(reader);
    }
}

以及调用：

static void Main(string[] args)
{
    PathDetailsBLL train = new PathDetailsBLL();
    PathDetailsMessage pdm = train.GetDetails();
    string xml = train.Serialize(pdm);
    PathDetailsBLL dsa = new PathDetailsBLL();
    PathDetailsMessage fds = new PathDetailsMessage();
    fds = dsa.Deserialize(pdm.ToString());
    Console.Write(fds);
    Console.ReadKey();
}

在线return (PathDetailsMessage)serializer.Deserialize(reader);我收到以下错误：

System.InvalidOperationException: 'There is an error in XML document (1, 1).'

XmlException: Data at the root level is invalid. Line 1, position 1.

你能帮帮我吗？

谢谢。

Answer 1

 fds = dsa.Deserialize(pdm.ToString());

您想反序列化 xml 变量，但改用 pdm.ToString()。尝试

 fds = dsa.Deserialize(xml);

Answer 2

您似乎正在将 train.GetDetails() 返回的对象序列化为 XML 字符串，xml，但您正在尝试反序列化该字符串（不一定是 XML 字符串）由 pdm.ToString() 返回。相反，您是否打算致电 dsa.Deserialize(xml)？

为什么在 XML 反序列化函数中会出现此错误？

Why do I get this error at XML Deserialization function?

.net

c#

xml

serialization

xml-serialization