Data Types

:confused:

Is there a way to define a custom data type that only allows certain values?

For instance, I would like to create a datatype of SIZE which could hold values of SMALL, MEDIUM, LARGE exclusively. I figure I could do this through making constants for each that translate to 1, 2, and 3 and then doing SIZE as a byte, but I would prefer the more streamlined method.

Thank you.

:)
Upon clicking back over to the VB Help file I noticed that under constants, the topic I had been searching, a heading for 'enumeration', which rang a bell, and thus my question is answered.

Private Enum Size
Small
Medium
Large
End Enum

I think you are talking about enumeration:

The following code goes in the general declarations section of a form or module

Code:

---

Enum enmMySizes
  SMALL = 0
  MEDIUM = 1
  LARGE = 2
End Enum

---

Then assign it to a variable to use it:

Code:

---

Dim Sizes as enmMySizes
If Sizes = MEDIUM Then
  'Do Something
End If

---