Serialization of non-Serialized collection

[Tamir Khason]

I have collection based class wich is non serializable (for some reason)
[NonSerClass]
I want to create another class with similar to [NonSerClass], but
serializable [SerClass]
so doing:

public class NonSerClass:CollectionBase
{Whatever}

[Serializable]
public class SerClass : NonSerClass

This working fine, except the little problem. while casting from NonSerClass
to SerClass I recieve "Invalid Cast" exception, as well as attempts like
NonSerClass no_ser_foo = new NonSerClass();
SerClass ser_foo =no_ser_foo as SerClass;
returns null

Please advice. Why is it

TNX

--
Tamir Khason
You want dot.NET? Just ask:
"Please, www.dotnet.us "

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

Tamir,

The reason that this doesn't work is that you can not cast a reference
up when the type is not that of the derived type. no_ser_foo is just a
reference to an instance of NonSerClass. If you want an instance of
SerClass, you have to create it yourself.

Hope this helps.
--
- Nicholas Paldino [.NET/C# MVP]
- mv*@spam.guard.caspershouse.com
"Tamir Khason" <ta**********@tcon-NOSPAM.co.il> wrote in message
news:On**************@TK2MSFTNGP10.phx.gbl...

I have collection based class wich is non serializable (for some reason)
[NonSerClass]
I want to create another class with similar to [NonSerClass], but
serializable [SerClass]
so doing:

public class NonSerClass:CollectionBase
{Whatever}

[Serializable]
public class SerClass : NonSerClass

This working fine, except the little problem. while casting from
NonSerClass to SerClass I recieve "Invalid Cast" exception, as well as
attempts like
NonSerClass no_ser_foo = new NonSerClass();
SerClass ser_foo =no_ser_foo as SerClass;
returns null

Please advice. Why is it

TNX

--
Tamir Khason
You want dot.NET? Just ask:
"Please, www.dotnet.us "