How to highlight a row if three conditions are met? - excel

Question

If the following conditions are met:
For any given row between row 10 and row 100 inclusively:
The cell in column A is not empty
The cell in column B is not empty
The cell in column O is empty
I would like to highlight a specific cell (let's say A1).
Example:
I populate A10 and E10 while leaving O10 empty, then cell A1 gets highlighted. If I then populate cell O10, the highlight in cell A1 disappears.
I can proceed to the next row. Any row at any time should generate these actions.
Thanks!

Answer 1

This will do the highlights based on the conditions you specified. When you run it, it'll stop at the first row you need to input something in column O. If you want it to keep running until row 101 and highlight all the rows, then remove then Exit Do command that's between the 2 End If statements.
Sub Highlight()
Dim TheRow As Integer
TheRow = 9
Application.ScreenUpdating = False 'This hides the visual process and speeds up
'the execution
Do
TheRow = TheRow + 1
If TheRow = 101 Then Exit Do
Cells(TheRow, 1).Select
Selection.Interior.Pattern = 0
Cells(TheRow, 2).Select
Selection.Interior.Pattern = 0
If Not Cells(TheRow, 1).Value = "" And Not Cells(TheRow, 2).Value = "" And Cells(TheRow, 15).Value = "" Then
If Cells(TheRow, 1).Value = "" Then
Cells(TheRow, 1).Select
Selection.Interior.Color = 656
End If
If Cells(TheRow, 2).Value = "" Then
Cells(TheRow, 2).Select
Selection.Interior.Color = 656
End If
Exit Do 'this is the line to remove if you want to highlight all cells
End If
Loop
Application.ScreenUpdating = True
End Sub
And then, create an event handler that triggers when a cell in column 15 changes. Put the following code in the module of the actual worksheet (in the VBA project explorer, double click on the sheet you want have this functionality for; don't put this in a different module!)
Private Sub Worksheet_Change(ByVal Target As Range)
If Target.Column = 15 Then
If Target.Row > 9 And Target.Row < 101 Then Call Highlight
End Sub
Let me know if this solution works and remember to click "accept solution" and to vote for it!
Happy coding.

Answer 2

You don't need VBA: just use conditional formatting on cell A10 with the following formula:
=AND(NOT(ISBLANK($A10)),NOT(ISBLANK($B10)),ISBLANK($O10))

Answer 3

OK - I misunderstood what you wanted. Here is a VBA UDF to do the checking.
Enter =Checker($A$10:$B$100,$O$10:$O$100) in cell A1, then use conditional formatting on cell A1 that is triggered when it becomes True.
Public Function Checker(theRangeAB As Range, theRangeO As Variant) As Boolean
Dim varAB As Variant
Dim varO As Variant
Dim j As Long
varAB = theRangeAB.Value2
varO = theRangeO.Value2
Checker = False
For j = 1 To UBound(varAB)
If Not IsEmpty(varAB(j, 1)) And Not IsEmpty(varAB(j, 2)) Then
If IsEmpty(varO(j, 1)) Then
Checker = True
Exit For
End If
End If
Next j
End Function