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Passing array between subs

Posted on 2011-09-12
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Last Modified: 2012-06-27
I feel like a total noob for having to ask this question, but, I'm having trouble passing an array between subroutines. What am I missing?

here is a sample of my code:
    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        Dim soup(3, 3) As String
        soup(0, 0) = "nacho"
        soup(0, 1) = "cheese"
        mySub(soup(3, 3))
    End Sub

    Protected Sub mySub(ByRef soup As String)
        soup(0, 0) = "Eggs"
        soup(0, 1) = "Bacon"
    End Sub

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Question by:David11011
  • 2
3 Comments
 
LVL 23

Accepted Solution

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wdosanjos earned 500 total points
ID: 36523709
Please try the following:

	Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
		Dim soup(3, 3) As String
		soup(0, 0) = "nacho"
		soup(0, 1) = "cheese"
		mySub(soup)
	End Sub

	Protected Sub mySub(ByRef soup(,) As String)
		soup(0, 0) = "Eggs"
		soup(0, 1) = "Bacon"
	End Sub

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LVL 2

Author Comment

by:David11011
ID: 36523746
That worked. thanks. One more question for you.
Originally I tried
	Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
		Dim soup(3, 3) As String
		soup(0, 0) = "nacho"
		soup(0, 1) = "cheese"
		mySub(soup)
	End Sub

	Protected Sub mySub(ByRef soup(3, 3) As String)
		soup(0, 0) = "Eggs"
		soup(0, 1) = "Bacon"
	End Sub

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but that throws an error. Why would  soup(,) not throw an error and soup(3, 3) throw an error when  (3,3) is within the array bounds?
0
 
LVL 23

Expert Comment

by:wdosanjos
ID: 36523798
The only time you specify the array size is on the variable declaration.  On the function declaration you just indicate that it's a two-dimension array (soup(,) in this case).

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