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Advanced .NET Debugging by Mario Hewardt

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Chapter 7. Interoperability

When .NET 1.0 was first introduced back in 2002, the .NET team was faced with the question of how much support it should provide for interacting with legacy code written outside of the brand new managed runtime. Because the success of the new platform depended, to a large degree, on the adoption rate, the .NET team decided to provide a rich and seamless integration with existing native code. The two primary areas of focus were allowing managed code to call into native code via COM (or vice versa); or, alternatively, call into exported DLL functions. Managed code calling into COM (or vice versa) is called COM interoperability (also called interop) and calls into exported DLL functions are referred to as Platform Invocation ...

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