Unlock cell on a condition from adjacent cell - vba

I have two columns but the codition I would like is to be evaluated from one cell to another.
The first column has cells which have a drop down validation with names, and the second will activate only if a certain name from the adjacent cell is selected.
so far i only found this code but it does not seem to work:
Private Sub Worksheet_Change(ByVal Target As Range)
If Range("A1").Value = "Car" Then
Range("B1").Locked = False
Else
Range("B1").Locked = True
End If
End Sub
I would need this code go from (for example) A1:A10 and B1:B10.
I hope I am making sense. If there is a way to do it without VBA, that would be great.
Thanks for the help.

The Target parameter tells you the range that is being changed.
You need to do something like the following:
Private Sub Worksheet_Change(ByVal Target As Range)
Dim rng As Range
Set rng = Intersect(Range("A1:A10"), Target)
If rng Is Nothing Then
' Not updating the range we care about
Exit Sub
Else
rng.Offset(0, 1).Locked = ... whatever ...
End If
End Sub
Note that your target range can be more than one cell (e.g. when using copy/paste), so you need to handle and test this case.
Calling Intersect returns you the intersection of the target range and the range you are interested in testing (A1:A10 in this sample).
You can then access the corresponding adjacent cell(s) using .Offset(0,1)

That code snippet works perfectly for me.
Did you place that code in the proper WorkSheet object? It won't work if you just put it into a VBA module. When you are in the Visual Basic Editor, look for a directory on the left side of the screen labeled "Microsoft Excel Objects". In that directory should be a WorkSheet object for every sheet in your file. Double-click on one of these to edit the code for that WorkSheet. This is where your code snippet should go.

Private Sub Worksheet_Change(ByVal Target As Range)
If Range("A1").Value = "Car" Then
Range("B1").Locked = False
Me.Unprotect ("password")
Else
Range("B1").Locked = True
Me.Protect ("password")
End If
End Sub
Use Me.Protect so the .Locked method does something. You should probably unlock every other cell though.

Related

excel hide rows with error values based on dropdown change

I would like to hide rows in column B9-B40 when Index/Match formula returns "N/A" , now I managed to get it done in VBA when the table is static but I have a dynamic table based on drop-down selection which means the number of N/As returned can be different for each time drop-down selection changes.
Here is what I have right now which hides the rows with N/A based on current drop-down selection, my dropdowns are in C2,C3 and C4. But it doesn't takes any further change in the dropdown into consideration afterwards. I am not very competent with the VBA so any help would be great.
Thanks.
Option Explicit
Sub hide_if_error()
Dim MyCell As Range, Rng As Range
Set Rng = Range("B9:B40")
For Each MyCell In Rng
If IsError(MyCell) Then
MyCell.EntireRow.Hidden = True
End If
Next MyCell
End Sub
You can do
Range("B9:B40").SpecialCells(xlCellTypeFormulas, xlErrors).EntireRow.Hidden = True
You will need a test in advance that errors are present though.
That might look like:
Option Explicit
Public Sub hide_if_error()
With ThisWorkbook.Worksheets("Sheet4")
.Range("B9:B40").EntireRow.Hidden = False
If Evaluate("=SUM(IF(ISERROR(" & .Range("B9:B40").Address & "),1))") > 0 Then '<==check if any errors present
.Range("B9:B40").SpecialCells(xlCellTypeFormulas, xlErrors).EntireRow.Hidden = True
End If
End With
End Sub
If necessary, you could link the above to a worksheet change or dropdown change event so it is fired each time there is an update using the dropdown(s)
For example:
If you data validation was in C2:C4 you would put in the code pane for the sheet the following event code:
Option Explicit
Private Sub Worksheet_Change(ByVal Target As Range)
On Error GoTo ErrHand
If Not Intersect(Target, Range("C2:C4")) Is Nothing Then
Application.EnableEvents = False
hide_if_error
End If
ErrHand:
Application.EnableEvents = True
End Sub
Note:
The worksheet event code goes in the code pane associate with sheet 4:
The other code goes in a standard module (module 1 here):
Example run:

Excel VBA code to select all cells with data sometimes working

I once built a VBA button to automatically lock all cells with data in them. And it was working perfectly. Now I wanted to copy that button to another worksheet. So I created another button, copy and pasted the whole VBA over, then edited the worksheet names and range. And, it's only working like 5% of the time, the rest of the time, I'm getting an "Run-Time error '1004': No cells were found." I've tried a few fixed, changing Sheets to Worksheets, or adding a ", 23" to the specialcells argument. However, nothing is working right now. When I try stepping in, it sometimes say both rng and lckrng as empty, and sometimes only show lockrng as empty and not show rng at all. Problem is this used to be a working code, and now, it still works around 5% of time. Any idea why? Thank you very much!
Private Sub CommandButton1_Click()
Dim rng As Range
Dim lockrng As Range
Sheets("Uploading Checklist (M)").Unprotect Password:="signature"
Set rng = Range("A1:M14")
'Selecting hardcoded data and formulas
Set lockrng = Union(rng.SpecialCells(xlCellTypeConstants), rng.SpecialCells(xlCellTypeFormulas))
lockrng.Locked = True
Sheets("Uploading Checklist (M)").Protect Password:="signature"
End Sub
Maybe this is too simplistic, but it seems to do what you want. The animated .gif shows it working to "lock all cells with data in them". (I made the second button just for convenience). If nothing else it might be good to start from something like this that works and modify to suit your needs.
Dim cell As Range, sh As Worksheet
Sub Button4_Click()
Set sh = Worksheets("Sheet1")
sh.Unprotect Password:="s"
For Each cell In sh.UsedRange
If cell <> "" Then cell.Locked = True Else cell.Locked = False
Next
sh.Protect Password:="s"
End Sub
Sub Button5_Click()
Set sh = Worksheets("Sheet1")
sh.Unprotect Password:="s"
End Sub
The Union you are attempting will not work if either of the parameters is Nothing (i.e. you either have no constants in the range, or you have no formulas in the range).
Prior to doing the Union, you should check the parameters aren't Nothing but, once you start changing your code to do that, it would be just as simple to do the locking in two parts - so I recommend you rewrite the code as follows:
Private Sub CommandButton1_Click()
With Sheets("Uploading Checklist (M)")
.Unprotect Password:="signature"
With .Range("A1:M14")
'Lock any constants
If Not .SpecialCells(xlCellTypeConstants) Is Nothing Then
.SpecialCells(xlCellTypeConstants).Locked = True
End If
'Lock any formulas
If Not .SpecialCells(xlCellTypeFormulas) Is Nothing Then
.SpecialCells(xlCellTypeFormulas).Locked = True
End If
End With
.Protect Password:="signature"
End With
End Sub

unlock specific area in a protected excel sheet with vba

I have to unlock a specific range (D6:BC116) in a excel sheet. It should be able for other people editing this specific area. So it should be unlocked for them.
At first I manually protect the whole sheet without any code. And after that I want to unprotect the specific area for editing. But something always goes wrong. I have these two codes. The first code has the hidden property it only hides empty cells. The other code I am trying to unprotect specific area I want to edit after protecting the whole sheet.
I am not really sure if the problem is in the first code because of the hidden property? And I am not sure if they are in a relation?
Private Sub Worksheet_Change(ByVal Target As Range)
For Each cell In Range("B6:B112")
If cell.Value <> "" Then
cell.EntireRow.Hidden = False
Else
cell.EntireRow.Hidden = True
End If
Next cell
End Sub
Sub UnlockCells()
Worksheets("Sheet1").Range("D6:BC116").Locked = False
Worksheets("Sheet1").Protect
End Sub
And when I execute this I always get "Index out of range"
Thanks!
I think you need to unprotect before unlocking.
Like this:
With Worksheets("Sheet1")
.Unprotect "MyLongAndSecurePassword"
.Range("D6:BC116").Locked = False
.Protect
End with
Concerning the first part of the code - make sure that you use a variable, which is not named cell, because cell is used by the VBEditor. Name your variable rngCell, myCell or anything else but cell. And declare it like this: Dim rngCell as Range.
Last point - lock your worksheet and try to hide and unhide manually the rows. Is it possible? If not, you know the reason for the error.
Edit:
To check whether the sheet is protected, try this in the Worksheet_Change:
Private Sub Worksheet_Change(ByVal Target As Range)
If Worksheets("Sheet1").ProtectContents Then Exit Sub
For Each cell In Range("B6:B112")
If cell.Value <> "" Then
cell.EntireRow.Hidden = False
Else
cell.EntireRow.Hidden = True
End If
Next cell
End Sub

Highlight Individual Cell based on a change of cell

I want to highlight an individual cell based upon it being changed. The code below gives me a debug error. The range I am using is A7:AH500 if any of this individual cells changes, then highlight that cell that changed. And also can I add this to a module, or does this have to go on the sheet directly?
If Not Intersect(Target, Range("A7:AH500")) Is Nothing Or _
Not Intersect(Target, Range("A7:AH500")) Is Nothing Then
Target.Interior.ColorIndex = 3
End If
From other thread to complete this off;
Okay try this - Delete what you've just added to the ThisWorkbook object. Then with the drop-downs select 'Workbook' from the left hand one, and 'SheetChange' from the right hand one. It should insert some code. Inside the Sub (before the End Sub code) - Add the code
Target.Interior.ColorIndex = 3
The code to detect a change in a cell must be in the sheet. The code that executes whatever changes you want can be in a module.
So you could have in each sheet (if more than one):
Private Sub Worksheet_Change(ByVal Target as Range)
If Not Intersect(Target, Range("A7:AH500")) Is Nothing Or _
Not Intersect(Target, Range("A7:AH500")) Is Nothing Then
Call UpdateFormat(Target)
End If
End Sub
And in a module
Sub UpdateFormat(p_rngCell As Range)
p_rngCell.Interior.ColorIndex = 3
End Sub
This will allow you to make any changes to actual logic only once across multiple sheets.

Retrieve the cell you used a macro in

I want to find the exact cell where my macro is if I press it
For example, all of these pictures are the same macro. Somehow I need to find the cell where I pressed on.
I find this quite hard to explain so not sure if you will understand what I mean but it would be great if someone could help me.
Thank you in advance
Look at the Worksheet_SelectionChange event.
The Target is a range that you can access the properties of and work with.
Private Sub Worksheet_SelectionChange(ByVal Target As Range)
'You can access the row and column of the target itself
With ActiveWindow
.ScrollRow = Target.Row
.ScrollColumn = Target.Column
End With
End Sub
If you have a value in the cells with the pictures you can access that.
Private Sub Worksheet_SelectionChange(ByVal Target As Range)
Dim str as String
str = Target.Value
msgbox (str)
End Sub