XML 文件中不同类的反序列化

Question

I get a file with different content (currently 4 different classes), either

<ClassA><!-- content --></ClassA>

or

<ClassB><!-- content --></ClassB>

or...

At time of parsing I have no further information which class is in the file.

So, currently, I try to parse by trial and error:

try
{
  ClassA result = (ClassA)new XmlSerializer(typeof(ClassA)).Deserialize(reader);
  if(!(result is null)) { \\do something }
}
catch (Exception) {}

And the same for ClassB and so on...

Is there a more elegant way to parse the classes?

I can give all classes the same base class, although the are quite different in their form.

Answer 1

I solved this issue with XmlSerializer.CanDeserialize(XmlReader)

            using (var reader = XmlReader.Create(stream))
            {
                foreach (var type in types)
                {
                    var serializer = new XmlSerializer(type);
                    if (serializer.CanDeserialize(reader))
                    {
                        return serializer.Deserialize(reader);
                    }
                }
                throw new XmlException("Invalid xml type");
            }