![]() ![]() All components should implement the IUnknown interface. When this count drops down to zero, the component is unloaded. The component’s IUnknown interface helps to maintain a reference count of the number of clients using the component. It imposes a standard for the interfaces through which client code talks to component classes. What is COM?ĬOM stands for Component Object Model, which is a binary specification for software code re-use. NET component.īefore we move on to the core concepts, let’s have a small primer on COM. NET components believe that they are talking to just another. This is where Interoperability pitches in it’s a Runtime Callable Wrapper (RCW) that translates specific calls from managed clients into COM specific invocation requests on unmanaged COM components. ![]() These legacy components ought to be exploited by managed code in the. Most organizations, which have built their enterprise applications on COM objects for their middle tier services, cannot write off the investments on these solutions. NET components, hence they are not innately compatible. What is the need for Interoperability?ĬOM components have a different internal architecture from. In this article, we review the concepts and walk-through an example that demonstrates COM interoperability in.
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