21. Platform Interoperability and Unsafe Code
C# has great capabilities especially when you consider that the underlying framework is entirely managed. Sometimes, however, you do need to escape out of all the safety that C# provides and step back into the world of memory addresses and pointers. C# supports this action in two significant ways. The first option is to go through Platform Invoke (P/Invoke) and calls into APIs exposed by unmanaged dynamic link libraries (DLLs). The second way is through unsafe code, which enables access to memory pointers and addresses.
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