Unique value in a cell

Rozallyn

New Member
Joined
Jan 23, 2019
Messages
6
Hi,

how do I ensure within a range of cells in a worksheet only a unique value can be entered even when pasting into the cell. The data validation function works well for this if the data is typed in but not pasted. Is there a VBA function that I can use?
your help will be greatly appreciated
 

Excel Facts

Which lookup functions find a value equal or greater than the lookup value?
MATCH uses -1 to find larger value (lookup table must be sorted ZA). XLOOKUP uses 1 to find values greater and does not need to be sorted.
Do you mean prevent duplicates being entered in a certain range ?
 
Last edited:
Upvote 0
To prevent duplicates in column A :
Code:
Private Sub Worksheet_Change(ByVal Target As Range)
Dim rng As Range, r As Range, c As Range
Set rng = [A:A]
Set r = Intersect(rng, Target)
If Not r Is Nothing Then
    For Each c In r
        If WorksheetFunction.CountIf(rng, c) > 1 Then
            Application.EnableEvents = False
            Application.Undo
            Application.EnableEvents = True
            Exit For
        End If
    Next
End If
End Sub
 
Upvote 0

Forum statistics

Threads
1,218,620
Messages
6,143,518
Members
450,492
Latest member
Rusbus1972

We've detected that you are using an adblocker.

We have a great community of people providing Excel help here, but the hosting costs are enormous. You can help keep this site running by allowing ads on MrExcel.com.
Allow Ads at MrExcel

Which adblocker are you using?

Disable AdBlock

Follow these easy steps to disable AdBlock

1)Click on the icon in the browser’s toolbar.
2)Click on the icon in the browser’s toolbar.
2)Click on the "Pause on this site" option.
Go back

Disable AdBlock Plus

Follow these easy steps to disable AdBlock Plus

1)Click on the icon in the browser’s toolbar.
2)Click on the toggle to disable it for "mrexcel.com".
Go back

Disable uBlock Origin

Follow these easy steps to disable uBlock Origin

1)Click on the icon in the browser’s toolbar.
2)Click on the "Power" button.
3)Click on the "Refresh" button.
Go back

Disable uBlock

Follow these easy steps to disable uBlock

1)Click on the icon in the browser’s toolbar.
2)Click on the "Power" button.
3)Click on the "Refresh" button.
Go back
Back
Top