I would like to know if I can prevent a certain value being entered into a
cell if the preceeding cell has acertain value. For example if cell 1A has
the value N entered in it can I prevent the value E being placed into cell
1B, obviously if any other value is in cell 1A I want to be able to enter the
value E. This is not a validating issue as I am also using validation rules
so that only certain values can be put into cells.
Thanks in advance

Try this tiny worksheet event macro. It is only an example for cells A1 and
B1:

Private Sub Worksheet_Change(ByVal Target As Range)
Set t = Target
Set a = Range("A1")
Set b = Range("B1")
If Intersect(t, b) Is Nothing Then Exit Sub
If a.Value < "N" Then Exit Sub
If b.Value < "E" Then Exit Sub
MsgBox ("E is not valid, try again")
Application.EnableEvents = False
b.ClearContents
b.Select
Application.EnableEvents = True
End Sub


Because it is worksheet code, it is very easy to install and automatic to use:

1. right-click the tab name near the bottom of the Excel window
2. select View Code - this brings up a VBE window
3. paste the stuff in and close the VBE window

If you have any concerns, first try it on a trial worksheet.

If you save the workbook, the macro will be saved with it.


To remove the macro:

1. bring up the VBE windows as above
2. clear the code out
3. close the VBE window

To learn more about Event Macros (worksheet code), see:

http://www.mvps.org/dmcritchie/excel/event.htm

--
Gary''s Student - gsnu200771


"Sadcrab" wrote:

I would like to know if I can prevent a certain value being entered into a
cell if the preceeding cell has acertain value. For example if cell 1A has
the value N entered in it can I prevent the value E being placed into cell
1B, obviously if any other value is in cell 1A I want to be able to enter the
value E. This is not a validating issue as I am also using validation rules
so that only certain values can be put into cells.
Thanks in advance