nubie: constants

i would like to set the limit for an array that i'm creating to a value that is not a const,

Dim Ordered(sqlcol) As Integer

but it won't compile due to the fact that sqlcol is not a constant value, have do i get this to work, any help is much appreciated.

Piers

Unfortunately, I do not believe it is possible to delare an array using a variable to set the size. It's just something VB (or any other programming language to my knowledge) dosen't allow. You either use constants, which cannot be changed, or you use actual numbers. From what I see, you seem to be trying to create a dynamic array - one that will take on a different size according to the situation. If this is the case, I strongly suggest you take a look at collections. You say you are a newbie (which is fine - we were all there once :) ) so I don't know if you feel ready to work with objects yet, but that would definitely be the way I would do it. A collection is a dynamic array of objects, and is much more powerful (IMHO) than a standard Dimmed array.

Hope this helps!

JFDman

dim sqlcol as long
reDim Ordered(sqlcol) As Integer

vb absolutely allows the use of a variable to declare the size. try this, start a new standard exe, put one command button on Form1 named Command1 and cut and paste the following code into Form1's code module. Run the project and put in a number for whatever size array you want and it will create an array that size, fill it with random numbers and spit the contents out to the immediate window:

Code:

---



Option Explicit
Dim aryNumbers() As Single

Private Sub LoadDynamicArray()
    Dim strUbound As String
    Dim intUbound As Integer
    Dim intCount As Integer
   
    strUbound = InputBox("Enter upper bound of your array", "UPPER BOUND", 10)
   
    If Trim$(strUbound) = "" Or IsNumeric(Trim$(strUbound)) = False Then Exit Sub
           
    intUbound = CInt(strUbound)
    ReDim aryNumbers(intUbound)
    Debug.Print "Upper bound of the array is " & UBound(aryNumbers)
    Randomize
    For intCount = 0 To intUbound - 1
        aryNumbers(intCount) = (Round((intUbound * Rnd)) + 1) * (Round((intUbound * Rnd)) + 1)
        Debug.Print "Array Element " & intCount & " contains " & aryNumbers(intCount)
    Next
End Sub

Private Sub Command1_Click()
    LoadDynamicArray
End Sub

---

Edited by pvb on 03-10-2000 at 12:39 PM