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Sweep a defined area replacing certain values with data contained within an array

Posted on 2014-01-26
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Last Modified: 2014-02-01
Hi,

What I am trying to do is define a two dimension array,

dim mydata (1 to 5, 1 to 2) as string

mydata(1,1)="[version]"
mydata(1,2)="v1.4.3"

Then, when a certain defined range within the sheet is changed, it does a check to see if any of the cells equal mydata(1,-) contain [version] and if they do it replaces them with mydata(,2)

So in this if I type into C3 "[update]" it will become v1.4.3 straight away.

This is my current code, which did work until I tried adding arrays in...

Private Sub Worksheet_Change(ByVal Target As Range)
   
Dim mydata(1 To 5, 1 To 2) As String
   
mydata(1, 1) = "[version]"
mydata(1, 2) = "v1.4.3"
   
    For lp = 1 To 40
        For lp2 = 1 To 40
       
            For lp3 = 1 To 5
                If Sheets("Sheet1").Cells(lp, lp2) = mydata(lp3, 1) Then
                    Sheets("Sheet1").Cells(lp, lp2) = mydata(lp3, 2)
                   
                   
                    Beep
                End If
            Next
       
       
        Next
    Next
   
End Sub




As you can see I am using a for loop to check 40 x 40 cells, other than fixing the above so it works please :)  Is there a better way to scan 40x40 cells and change values based on criteria from array?

Cheers
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Question by:DemonForce
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1 Comment
 
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Accepted Solution

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byundt earned 2000 total points
ID: 39810755
Assuming that the users are changing the values of the cells (rather than formulas), you should restrict the operation of the macro to those cells that are changed within the 40 x 40 cell grid of interest. Having done that, you can use VLOOKUP to return the new value.

Note that you need to fully populate the mydata array within the sub.
Private Sub Worksheet_Change(ByVal Target As Range)
Dim cel As Range, targ As Range
Dim mydata As Variant, v As Variant
Set targ = Range("A1:AN40")     'Watch these cells for user-initiated changes
Set targ = Intersect(targ, Target)
If targ Is Nothing Then Exit Sub

    'Add additional Array blocks within the outer array for other rows in mydata array
mydata = Array(Array("[version]", "v1.4.3"), Array("[version1]", "v1.4.3a"))
    
For Each cel In targ.Cells
    Set v = Nothing
    v = Application.VLookup(cel.Value, mydata, 2, False)
    If Not IsError(v) Then
        Beep
        Application.EnableEvents = False
        cel.Value = v
        Application.EnableEvents = True
    End If
Next
End Sub

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