[IronPython] Subclassing then instantiating from C#

[Michael Foord]

Curt Hagenlocher wrote:
> This isn't really a supported scenario today.  There is a CLS type 
> emitted for your class but it's emitted at runtime.  See also 
> http://blogs.msdn.com/shrib/archive/2008/07/24/cls-compilation-of-ironpython.aspx
>  
> Before joining the IronPython team, I started a project that 
> would allow this operation -- but I haven't been able to put any time 
> into it recently.

It's still something I'm interested in (Coils). There is also a non-zero 
chance that Resolver Systems will *need* something like this at some 
point - if so we will probably push Coils forward.

For the specific use case I would use ObjectOperations to create 
instances of the IronPython class at runtime. Until you can get a 
reference to the type at compile time the fact that it subclasses a C# 
type isn't relevant.

Alternatively you can create a factory function (in Python) to create 
instances - and call that from C#, casting the returned object to the 
known type.

Michael

>  
> On Tue, Aug 26, 2008 at 11:44 AM, hellosticky <hellosticky at gmail.com 
> <mailto:hellosticky at gmail.com>> wrote:
>
>     Hi, I have a C#.NET DLL that has an abstract class. I subclass
>     this class in IronPython, and then build a DLL using pyc.py. Now,
>     I'd like to load this IronPython Assembly from another C# project,
>     instantiate the class (using something like Assembly.GetType())
>     and call the virtual method on it.
>
>     The override of the abstract method worked and the DLL got build,
>     but when I load it in Reflector, I don't see any classes that
>     subclass the original .NET class. Any ideas?
>
>     Thanks,
>
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