Serialization and inheritance

[Gerben]

Hello,

I'm getting an error when I try to serialize a class in my project. Hope
someone can help me out:

Shared assembly:

[Serializable]
public abstract class Person
{
public int PersonData;
}

Project1

[Serializable]
public class Student : Person
{

}

Person person1 = new Student();

Project2:

I like to serialize person1 (using .net remoting) so I can use that object
in this project. Project2 only knows the person class, but that is enough
since I only need to access PersonData and nothing else. When I try this i'm
getting a serializable exception that says that project2 cannot find
Project1. But I don't want to include project1 or the student class. Is
there a way to solve this / can I tell Student to only serialize the Person
data in some way?

greets,

Gerben.

 

[Nicholas Paldino [.NET/C# MVP]]

Gerben,

Unfortunately, no, you can not. You need to have a reference to the
assembly that contains the type you are going to serialize so that the
serialization framework will be able to load the appropriate type/field data
for serialization.

Hope this helps.

 

[Jeff Louie]

Gerben... Net1.1 serialization was version specific. Net2.0 suppports
backward compatibility of versioning if you declare the new methods as
optional. I cannot find a reference to this online right now, but this
approach could be helpful.

Regards,
Jeff

 

[Gerben]

That's a pity. Forces me to move my student class to the shared assembly, it
isn't neat, but it works.

Thanks for your fast reply,

Gerben.

Gerben,

Unfortunately, no, you can not. You need to have a reference to the
assembly that contains the type you are going to serialize so that the
serialization framework will be able to load the appropriate type/field
data for serialization.

Hope this helps.


--
- Nicholas Paldino [.NET/C# MVP]
- (e-mail address removed)

Hello,

I'm getting an error when I try to serialize a class in my project. Hope
someone can help me out:

Shared assembly:

[Serializable]
public abstract class Person
{
public int PersonData;
}

Project1

[Serializable]
public class Student : Person
{

}

Person person1 = new Student();

Project2:

I like to serialize person1 (using .net remoting) so I can use that
object in this project. Project2 only knows the person class, but that is
enough since I only need to access PersonData and nothing else. When I
try this i'm getting a serializable exception that says that project2
cannot find Project1. But I don't want to include project1 or the student
class. Is there a way to solve this / can I tell Student to only
serialize the Person data in some way?

greets,

Gerben.