SetField[obj@field, val] sets a value of an object field.
UseFrontEnd[expr] evaluates expr in an environment where the kernel can make use of the services of the notebook front end.
$FrontEndInitializationFunction is a function that you can assign to execute when the front end link is first established by ConnectToFrontEnd[].
GetNETException[] returns the .NET exception object that was thrown in the most recent call from Mathematica to .NET.
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.