Warn if data is in range
 

I need a warning to appear when a user enter a value into A1, if there is a
value in any cell in the range B1:T1

Any one got a solution?
Thanks
Pat

Hi Pat,

One way

Option Explicit

Private Sub Worksheet_Change(ByVal Target As Range)

On Error GoTo ws_exit:
Application.EnableEvents = False
With Target
If .Address = "$A$1" Then
If Application.CountA(Range("B1:T1")) 0 Then
MsgBox "Data in B1:T1"
End If
End If
End With

ws_exit:
Application.EnableEvents = True
End Sub

'This is worksheet event code, which means that it needs to be
'placed in the appropriate worksheet code module, not a standard
'code module. To do this, right-click on the sheet tab, select
'the View Code option from the menu, and paste the code in.


--

HTH

RP
(remove nothere from the email address if mailing direct)


"Pat" wrote in message
...
I need a warning to appear when a user enter a value into A1, if there is
a
value in any cell in the range B1:T1

Any one got a solution?
Thanks
Pat

Try this:
Goto cell A1. Select menu: Data Validation...
Tab: Settings Allow: Custom Formula: =COUNT(B1:T1)=0
Tab: Error Alert Title: Error Values present in B1:T1

Done!

Ola Sandstrom

Hi Pat

you can code a worksheet_change even to check to see if there is anything in
B1:T1 when data is entered in A1 - e.g.

----
Private Sub Worksheet_Change(ByVal Target As Range)
If Target.Address = "$A$1" And Target.Value < "" Then
If
Application.WorksheetFunction.CountIf(Sheets("Shee t3").Range("B1:T1"), "*")
= 1 Then
MsgBox "Range B1:T1 is not empty"
End If
End If
End Sub
---

to use the code, right mouse click on the sheet that you want to run the
code against and choose view code
copy & paste the above directly into the right hand side screen - if you get
any red lines, click at the end of the line and press the delete key - this
should fix up any line break problems.
change "Sheet3" to the name of your sheet
use alt & f11 to switch back to your worksheet and test

Hope this helps
Cheers
JulieD

"Pat" wrote in message
...
I need a warning to appear when a user enter a value into A1, if there is a
value in any cell in the range B1:T1

Any one got a solution?
Thanks
Pat