Excel VBA cell upper/lower case depending other cell - vba

Question

I'm writing a code to loop through an excel sheet and changing the text (in column B) to uppercase/lowercase, depending on the value of cell in column N on the same row.
Macros purpose:
loop through cells in column B starting at row 2 and changing the string from upper to lowercase or vice versa, depending on the value of the cell in column N (lowercase if value = 5, other cases text should be uppercase)
Code I've got so far:
Sub CAPS()
'
' CAPS Macro
'
Dim Rang As Integer
Dim j As Integer
j = 2
For Each N In Source.Range("N2:N10000") ' Do 10000 rows
Rang = Cells(j, 14)
If Rang = 5 Then
Cells(j, 2).Range("A1").Select
ActiveCell.Value = LCase$(ActiveCell.Text)
Else
ActiveCell.Value = UCase$(ActiveCell.Text)
j = j + 1
End If
Next N
End Sub
I'm a little bit stuck in the looping part, not really a clue how to fix the error(s) in the current code.
Thanks in advance :)

Answer 1

Sub CAPS()
'
' CAPS Macro
'
Dim N as long 'use long here as integer is limite to a 32b character
For N Is 2 to 10000 ' Do 10000 rows
If Cells(N, 14) = 5 Then
Cells(N, 2) = LCase(Cells(N,2)
Else
Cells(N, 2) = UCase(Cells(N,2)
EndIf
Next N
End Sub
This should do the trick, untested though.
You currently have a fixed number of rows you want to test. To optimize your code you could first check how many rows are filled with data. To do so you can use:
DIM lastrow as long
lastrow = Cells(Rows.Count, "B").End(xlUp).Row
And then make the loop with For N Is 2 to lastrow
Also it is good practice to explicitly reference your worksheets, as this prevents undesired results. For example you click on another worksheet whilst the code is running it will continue formatting on that sheet. To do so declare a variable as your worksheet:
DIM ws as worksheet
And set a value to your variable, in this case Sheet1.
Set ws as ThisWorkbook.Worksheets("Sheet1")
Now every time you reference a Cells(), you explicitly say on what sheet that has to be by adding ws. in front of it like such: ws.Cells()
To summarize all that into your code:
Sub CAPS()
'
' CAPS Macro
'
Dim N as long 'use long here as integer is limite to a 32b character
Dim lastrow as long
Dim ws as worksheet
Set ws = ThisWorkbook.Worksheets("Sheet1") 'Set the code to run on Sheet 1 of your current workbook.
lastrow = ws.Cells(Rows.Count, "B").End(xlUp).Row
For N Is 2 to lastrow ' Do all rows that have data in column B
If ws.Cells(N, 14) = 5 Then
ws.Cells(N, 2) = LCase(ws.Cells(N,2)
Else
ws.Cells(N, 2) = UCase(ws.Cells(N,2)
EndIf
Next N
End Sub

Answer 2

Try processing in an array,
Sub CAPS()
'
' CAPS Macro
'
Dim arr As variant, j As Integer
with worksheets("sheet1")
arr = .range(.cells(2, "B"), .cells(.rows.count, "B").end(xlup).offset(0, 12)).value2
for j= lbound(arr, 1) to ubound(arr, 1)
if arr(j, 13) = 5 then
arr(j, 1) = lcase(arr(j, 1))
else
arr(j, 1) = ucase(arr(j, 1))
end if
next j
redim preserve arr(lbound(arr, 1) to ubound(arr, 1), 1 to 1)
.cells(2, "B").resize(ubound(arr, 1), ubound(arr, 2)) = arr
end with
End Sub

Answer 3

You may try something like this...
Sub CAPS()
Dim ws As Worksheet
Dim lr As Long, i As Long
Application.ScreenUpdating = False
Set ws = Sheets("Sheet1") 'Sheet where you have to change the letter case
lr = ws.Cells(Rows.Count, "B").End(xlUp).Row
For i = 2 To lr
Select Case ws.Cells(i, "N")
Case 5
ws.Cells(i, "B") = LCase(ws.Cells(i, "B"))
Case Else
ws.Cells(i, "B") = UCase(ws.Cells(i, "B"))
End Select
Next i
Application.ScreenUpdating = True
End Sub

Answer 4

Another approach using for each loop with Range:
Sub UCaseLCase()
Dim rng, cell As Range
Dim Test As Integer
Test = 5
Set rng = Range(Cells(2, 14), Cells(10000, 14))
For Each cell In rng.Cells
If cell.Value = Test Then
cell.Offset(0, -12) = LCase(cell.Offset(0, -12))
Else
cell.Offset(0, -12) = UCase(cell.Offset(0, -12))
End If
Next cell
End Sub

Answer 5

I know you said in your question starting at row 2 but it's easier just going from last row until row 2.
Hope this can help or at least, learn something new about Loops :)
Sub CAPS()
Dim j As Integer
For j = Range("B2").End(xlDown).Row To 2 Step -1
If Range("N" & j).Value = 5 Then
'uppercase
Range("B" & j).Value = UCase(Range("B" & j).Value)
Else
'lowercase
Range("B" & j).Value = LCase(Range("B" & j).Value)
End If
Next j
End Sub