Hi,

I've got a problem with a bit of code I'm using to instantiate objects
in a remote AppDomain.

I've created a class derived from MarshalByRefObject which I
instantiate into a new AppDomain using CreateInstanceAndUnwrap. The
object is instantiated correctly and gives me back a
__TransaparentProxy. However, when I try to cast that to the actual
class, it's throwing an InvalidCastException.

The strange thing is that if I cast it in the Watch Window, it works a
treat.

So, say the class I'm instantiating is MyMbro, when I use

object obj = remotedomain.CreateInstanceAndUnwrap(assemblyName,
typeName);
MyMbro obj1 = (MyMbro) obj;

I get the exception on the second line, but if I just put

(MyMbro) obj

in a watch, it casts correctly and I can see the object.

I've tried everything I can think of to sort this out. I've checked
all the fusion logs and as far as I can tell, both domains are loading
the same assembly (the codebase and display names are consistent)

Does anyone have any pointers for what I should check next?

As a bit of background, the primary appdomain is a BizTalk Adapter. It
is possible that the assembly within the adapter appdomain is loaded
using LoadFrom... Not sure whether that is contributing to the
problem.

Cheers
Ian