| Constant | Value | Description |
| vbVEmpty | 0 | Empty (uninitialized) |
| vbVNull | 1 | Null (no valid data) |
| vbVInteger | 2 | Integer data type |
| vbVLong | 3 | Long integer data type |
| vbVSingle | 4 | Single-precision floating-point data type |
| vbVDouble | 5 | Double-precision floating-point data type |
| vbVCurrency | 6 | Currency (scaled integer) data type |
| vbVDate | 7 | Date data type |
| vbVString | 8 | String data type |