VBA moving rows through arrays - arrays

Question

I am pretty new with arrays in VBA, and need some help finishing a code...
The objective is to copy from one array to another if a value in the first part of the array is found.
Here's what I have so far, and I have put comments in the lines that I am struggling with.
Option Explicit
Sub ReadingRange()
Dim ARRAY_Multiwage As Variant
Dim ARRAY_TEMP_Multiwage() As Variant
ARRAY_Multiwage = Sheets("Multiwage").Range("A1").CurrentRegion
Dim a As Long
Dim b As Long
For a = LBound(ARRAY_Multiwage, 1) To UBound(ARRAY_Multiwage, 1)
If ARRAY_Multiwage(a, 1) = "60021184_2018/36/HE" Then
'add ARRAY_Multiwage(a, 1) to ARRAY_TEMP_Multiwage
'Debug print to see that it has been added
Else:
End If
Next a
End Sub
Any help would be greatly appreciated

Answer 1

Try this out. What you are looking for is ReDim option to dynamically expand an array before entering data into the newest slot.
Sub ReadingRange()
Dim ARRAY_Multiwage As Variant
Dim ARRAY_TEMP_Multiwage() As String
ARRAY_Multiwage = Sheets("Sheet2").Range("A1").CurrentRegion
Dim a As Long
Dim b As Long
' c is the counter that helps array become larger dynamically
Dim c As Long
c = 0
For a = LBound(ARRAY_Multiwage, 1) To UBound(ARRAY_Multiwage, 1)
If ARRAY_Multiwage(a, 1) = "60021184_2018/36/HE" Then
' change the dimension of the array
ReDim Preserve ARRAY_TEMP_Multiwage(c)
' add data to it
ARRAY_TEMP_Multiwage(c) = ARRAY_Multiwage(a, 1)
' print what was added
Debug.Print ("Ubound is " & UBound(ARRAY_TEMP_Multiwage) & ". Latest item in array is " & ARRAY_TEMP_Multiwage(UBound(ARRAY_TEMP_Multiwage)))
' get ready to expand the array
c = c + 1
Else:
End If
Next a
End Sub

Answer 2

I tend to use a Long data type variable as a counter within the loop for the destination array, that way each time the array is accessed, a new element can be written to. In past I've been steered towards declaring the new array with the maximum upper bound it could hold and resize it once at the end so the below example will follow that.
Option Explicit
Sub ReadingRange()
Dim ARRAY_Multiwage As Variant
Dim ARRAY_TEMP_Multiwage() As Variant
ARRAY_Multiwage = Sheets("Multiwage").Range("A1").CurrentRegion
Dim a As Long
Dim b As Long
Dim ArrayCounter as Long
ArrayCounter = 1 'Or 0, depends on if you are using a zero based array or not
For a = LBound(ARRAY_Multiwage, 1) To UBound(ARRAY_Multiwage, 1)
If ARRAY_Multiwage(a, 1) = "60021184_2018/36/HE" Then
ARRAY_TEMP_Multiwage(ArrayCounter) = ARRAY_Multiwage(a, 1)
Debug.Print ARRAY_TEMP_Multiwage(ArrayCounter)
ArrayCounter = ArrayCounter + 1
Else
'Do nothing
End If
Next a
ReDim Preserve ARRAY_TEMP_Multiwage (1 To (ArrayCounter - 1))
End Sub

Answer 3

Copy Range With Criteria
The following will copy from worksheet Sourceultiwage to worksheet
Targetultiwage both in ThisWorkbook, the workbook containing this
code.
Adjust the values in the constants section including wb.
Additionally you can choose to copy headers (copyHeaders)
The Code
Option Explicit
Sub copyWithCriteria()
' Source
Const srcName As String = "Sourceultiwage"
Const srcFirst As String = "A1"
' Target
Const tgtName As String = "Targetultiwage"
Const tgtFirst As String = "A1"
' Criteria
Const CriteriaColumn As Long = 1
Const Criteria As String = "60021184_2018/36/HE"
' Headers
Const copyHeaders As Boolean = False
' Workboook
Dim wb As Workbook: Set wb = ThisWorkbook
' Write values from Source Range to Source Array.
Dim rng As Range
Set rng = wb.Worksheets(srcName).Range(srcFirst).CurrentRegion
Dim NoR As Long
NoR = WorksheetFunction.CountIf(rng.Columns(CriteriaColumn), Criteria)
Dim Source As Variant: Source = rng.Value
' Write values from Headers Range to Headers Array.
If copyHeaders Then
Dim Headers As Variant: Headers = rng.Rows(1).Value
End If
' Write from Source to Target Array.
Set rng = Nothing
Dim UB1 As Long: UB1 = UBound(Source)
Dim UB2 As Long: UB2 = UBound(Source, 2)
Dim Target As Variant: ReDim Target(1 To NoR, 1 To UB2)
Dim i As Long, j As Long, k As Long
For i = 1 To UB1
If Source(i, CriteriaColumn) = Criteria Then
k = k + 1
For j = 1 To UB2
Target(k, j) = Source(i, j)
Next j
End If
Next i
' Write from Target Array to Target Range.
With wb.Worksheets(tgtName).Range(tgtFirst)
If copyHeaders Then .Resize(, UB2).Value = Headers ' Headers
.Offset(Abs(copyHeaders)).Resize(NoR, UB2).Value = Target ' Data
End With
' Inform user.
MsgBox "Data transferred.", vbInformation, "Success"
End Sub