| Delphi | C# | Supported |
| dynarrayfromvariant | No | |
| dynarraytovariant | No | |
| findcustomvarianttype | No | |
| findvardata | No | |
| handleconversionexception | No | |
| null | No | |
| unassigned | No | |
| vararraycreate | No | |
| vararraycreateerror | No | |
| vararraydimcount | No | |
| vararrayget | No | |
| vararrayhighbound | No | |
| vararraylock | No | |
| vararraylowbound | No | |
| vararrayof | No | |
| vararrayput | No | |
| vararrayref | No | |
| vararrayunlock | No | |
| varaserror | No | |
| varastype | No | |
| varcasterror | No | |
| varcheckempty | No | |
| varcomparevalue | No | |
| varcopynoind | No | |
| vardispproc | No | |
| varensurerange | No | |
| varfromdatetime | No | |
| varinrange | No | |
| varinvalidnullop | No | |
| varinvalidop | No | |
| varisarray | No | |
| varisbyref | No | |
| varisclear | No | |
| variscustom | No | |
| varisempty | No | |
| varisemptyparam | No | |
| variserror | No | |
| varisfloat | No | |
| varisnull | No | |
| varisnumeric | No | |
| varisordinal | No | |
| varisstr | No | |
| varistype | No | |
| varoverflowerror | No | |
| varrangecheckerror | No | |
| varresultcheck | No | |
| varsamevalue | No | |
| varsupports | No | |
| vartodatetime | No | |
| vartostr | Object.ToString | Yes |
| vartostrdef | No | |
| vartowidestr | No | |
| vartowidestrdef | No | |
| vartype | No | |
| vartypeastext | No | |
| vartypeisvalidarraytype | No | |
| vartypeisvalidelementtype | No |