typedef void __fastcall (__closure *TAdapterFieldFileEvent)(System::TObject* Sender, Web::Httpapp::TAbstractWebRequestFile* AFile);
TAdapterFieldFileEvent is the type for event handlers that perform some action on an uploaded file.
TAdapterFieldFileEvent is the type for event handlers that let you perform some function on a file uploaded to an adapter field.
Sender is the adapter field component to which the file is directed.
AFile describes the uploaded file.