how to update that elem value ?

I have question.

I want to increase elem ,

but need check that array() that string is repeat or not.

if not found repeat. increase elem

Code:

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array:
myArr(0,0) = "401"
myArr(1,0) = "2"

myArr(0,1) = "405"
myArr(1,1) = "4"

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if found repear. just only changed something.

Code:

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myArr(0,0) = "401"
myArr(1,0) = "7" '2+5 = increase 5 qty.

myArr(0,1) = "405"
myArr(1,1) = "4"

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how to start ?

textbox: "barcode", "qty" , command1_click

please!

Code:

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'form1
Private Sub Command1_Click()

Debug.Print IsArray(cartR)

Call addElem(cartR, input_barcode.Text, input_qty.Text, "new")


End Sub

Private Sub Command2_Click()
List1.Clear

Dim i As Integer

For i = LBound(cartR, 2) To UBound(cartR, 2)
List1.AddItem cartR(0, i) & ">" & cartR(1, i) & ">" & cartR(2, i) & ">"
Next i

End Sub

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Code:

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'module1
Option Explicit


Public cartR() As String


Public Function addElem(ByRef cartR() As String, ByVal a As String, ByVal b As String, ByVal c As String)

Dim i As Long
   
    If Not Not cartR Then i = UBound(cartR, 2) + 1
   
    ReDim Preserve cartR(0 To 2, i)
   

Dim i2 As Integer

For i2 = LBound(cartR, 2) To UBound(cartR, 2)

    If CStr(cartR(0, i2)) = CStr(a) Then
        cartR(0, i2) = "was" & cartR(0, i2) 'barcode
        cartR(1, i2) = "was" & CStr(CDbl(cartR(1, i2)) + CDbl(b)) 'qty
        cartR(2, i2) = "was" & cartR(2, i2)
    Else
        cartR(0, i) = a
        cartR(1, i) = b
        cartR(2, i) = c
    End If

Next i2

End Function

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