Data types
The data types used across all languages are basically the same, but the terms differ in some cases.
One important difference is between classic VB(A) and the .NET languages. As time goes on, we use larger and larger numbers. So large, sometimes, that the older languages have no support for them. .NET has added support and in doing so, changed the definitions for some of the numeric terms. For example, Long in the classic VB languages is Integer (int) in .NET.
| Com-VB | VB.NET | C# | .NET Framework (all lang.) | expected value |
| String | String | string | String | VBA: a string of ANSI characters. NET: a string of Unicode-characters |
| Boolean (careful! Many older properties require -1 instead of 1 oder True) |
Boolean | bool | Boolean | True / False -1 OR 1 / 0 |
| Byte | Byte | byte | Byte | 0 to 28-1 |
| Integer | ShortInteger | short | Int16 | -215 to 215-1 |
| Long | Integer | int | Int32 | -231 to 231-1 |
| no equivalent | Long | long | Int64 | -264 to 264-1 |
| Single | Single | float | Single | ±(~10-45 to 1038) |
| Double | Double | double | Double | ±(~10-324 to 10308) |
| exists, but can’t be used directly by VBA. | Decimal | decimal | Decimal | ±(~10-28 to 1028) |
| Variant | no exact equivalent. Closest match: Object | no exact equivalent. Closest match: object | no exact equivalent. Closest match: Object | The exact type is unknown at design time, only at runtime. |
| no equivalent | no equivalent | var | no equivalent | The compiler looks up the type based on the object being assigned. |
| no equivalent | no equivalent | dynamic | no equivalent | The type is calculated at runtime. |