Hi,

I have a linked list which is built using unmanaged code. Is there a way in which I can store a non-primitive object such as a class instance? What i want is to be able to store an instance of Class1 for example in the list and than read the instance from the list.

Thanks

I am not sure there is a way, but if there were, it is probably extremely dangerous. So there probably isn't.
The thing is that the Framework cannot keep track of references stored in unmanaged code. So there is a great risk that the Framework's garbage collector destroys the instance of your class while your unmanaged linked list still holds a reference to it.
Reading the instance back from the list and using it will then result in disaster.


: Hi,
:
: I have a linked list which is built using unmanaged code. Is there a way in which I can store a non-primitive object such as a class instance? What i want is to be able to store an instance of Class1 for example in the list and than read the instance from the list.
:
: Thanks
:


Greets,
Eric Goldstein
www.gvh-maatwerk.nl

This message was edited by suburbanmt at 2006-2-13 11:5:33

---

The problem is that the application i'm developing is quite dependent on performance, so using an arraylist for the job wouldn't be that efficient. Do you have any suggestions regarding any other available data structures?

Thanks for your help


: I am not sure there is a way, but if there were, it is probably extremely dangerous. So there probably isn't.
: The thing is that the Framework cannot keep track of references stored in unmanaged code. So there is a great risk that the Framework's garbage collector destroys the instance of your class while your unmanaged linked list still holds a reference to it.
: Reading the instance back from the list and using it will then result in disaster.
:
:
: : Hi,
: :
: : I have a linked list which is built using unmanaged code. Is there a way in which I can store a non-primitive object such as a class instance? What i want is to be able to store an instance of Class1 for example in the list and than read the instance from the list.
: :
: : Thanks
: :
:
:
: Greets,
: Eric Goldstein
: www.gvh-maatwerk.nl
:
:

Read these articles on unsafe code (C# pointers etc ... )

http://www.c-sharpcorner.com/Code/2004/Oct/WritingUnsafeCode.asp

http://www.codersource.net/csharp_unsafe_code.html

Tx, my problem is that the type is unknown as it is dynamic so I want the objects stored as OBJECT so that I can typecast them when I retrieve them from the list. What I want to do is as follows :

1) I have an object of unknown type

2) Store it in linked list (unmanaged code)

3) Retrieve it from the list and type cast it