If cell value same with upper cell value - excel

Question

I tried to make macro for my daily job, but i cannot use IF as formula due to so many item in my excel file, so solution is to convert formula to VBA code.
I need help to convert if formula to VBA code in excel as below:
=IF(J2<>J1,AD2-X2,AE1-X2).

Answer 1

Here is an answer to your question. However, it is limited to only work with OP information. Also, if the calculations are taking too long then, you should try setting your calculation to Manual (Formulas->Calculation Options->Manual).
Option Explicit
Public Sub RunIF()
Dim vntOut As Variant
Dim rngSame As Range
With ActiveSheet
Set rngSave = .Range("X2")
If (LCase(Trim(.Range("J2").Value)) <> LCase(Trim(.Range("J1").Value))) Then
vntOut = .Range("AD2").Value - rngSave.Value
Else
vntOut = .Range("AE1").Value - rngSave.Value
End If
.Range("AE2").value = vntOut
Set rngSave = Nothing
End With
End Sub
And here is your code converted to use Column J:
Private Sub CommandButton12_Click()
Dim x As Long
Dim LastRow As Long
Dim i as long
With Sheets("Shipping Schedule")
LastRow = .Cells(.Rows.Count, "J").End(xlUp).Row
For i = 2 to LastRow
set r = .Range("J" & I)
'For Each r In .Range("J2:J" & LastRow)
If LCase(Trim(r.Value)) <> LCase(Trim(r.Offset(-1, 0).Value)) Then
'ae2 = "AD2" - "x2"
r.Offset(0, 21).Value = r.Offset(0, 20).Value - r.Offset(0, 14).Value
Else
'ae2 = "AE1" - "x2"
r.Offset(0, 21).Value = r.Offset(-1, 21).Value - r.Offset(0, 14).Value
End If
set r = nothing
Next i
End With
End Sub
However, you should increment with I instead of for each as the cells are dependent on the previous row and excel may not loop through the range like you would prefer.

Answer 2

Excel Formula to VBA: Fill Column
Sub FillColumn()
Const cCol As Variant = "J" ' Last-Row-Column Letter/Number
Const cCol1 As Variant = "AD"
Const cCol2 As Variant = "X"
Const cCol3 As Variant = "AE"
Const cFirstR As Long = 1 ' First Row
Dim rng As Range ' Last Used Cell in Last-Row-Column
Dim i As Long ' Row Counter
Set rng = Columns(cCol).Find("*", , xlFormulas, , xlByColumns, xlPrevious)
If rng Is Nothing Then Exit Sub
For i = cFirstR To rng.Row - 1
If Cells(i + 1, cCol) <> Cells(i, cCol) Then
Cells(i + 1, cCol3) = Cells(i + 1, cCol1) - Cells(i + 1, cCol2)
Else
Cells(i + 1, cCol3) = Cells(i, cCol3) - Cells(i + 1, cCol2)
End If
Next
End Sub

Answer 3

Private Sub CommandButton12_Click()
Dim x As Long
Dim LastRow As Long
Sheets("Shipping Schedule").Select
With Sheets("Shipping Schedule")
LastRow = .Cells(.Rows.Count, "N").End(xlUp).Row
For Each r In .Range("N2:N" & LastRow)
If r.Value <> "" Then
r.Offset(0, 19).Value = ………………………………….
End if
Next r
End With
End Sub