LoadNETType — load and set up a .NET type for use from the Wolfram Language

NETType — expression that represents a .NET type

LoadNETAssembly — load and set up a .NET assembly for use from the Wolfram Language

NETAssembly — expression that represents a .NET assembly

NETNew — create a .NET object of a specified type

MakeNETObject — create a .NET object that represents an expression

CastNETObject — cast the specified object to a different type

NETTypeInfo — information about types

NETObjectQ — whether an expression is a valid .NET object reference

InstanceOf — whether an object is an instance of a certain type or subtype

SameObjectQ — whether two NETObject expressions reference the same .NET object

LoadedNETObjects — list of all .NET objects in use

LoadedNETTypes, LoadedNETAssemblies — list of all .NET types or assemblies in use

ReturnAsNETObject — return an object reference instead of its value

NETObjectToExpression — convert an object reference into its value