LoadedNETAssemblies[] returns a list of all the .NET assemblies that have been loaded into the current session.

LoadedNETObjects[] returns a list of all the .NET objects that have been loaded into the current session.

LoadedNETTypes[] returns a list of all the .NET types that have been loaded into the current session.

MarshalStringsAs is an option to DefineDLLFunction that specifies how string arguments should be marshaled into the DLL function. This applies to any arguments that are ...

NETLink[] returns the MathLink LinkObject that is used to communicate with the .NET/Link .NET runtime.

NETNewDelegate[type, func] creates a new instance of the specified .NET delegate type whose action is to call the named Mathematica function when triggered.

NETObjectQ[expr] gives True if expr is a valid reference to a .NET object, and False otherwise.

ReferencedAssemblies is an option to DefineDLLFunction that specifies assemblies needed to compile your function declaration.

ReleaseNETObject[obj] tells the .NET memory-management system to forget any references to the specified NETObject that are being maintained solely for the sake of Mathematica.

SameObjectQ[object_1, object_2] returns True if and only if the NETObject expressions object_1 and object_2 refer to the same .NET object.