Excel数据验证（带有或不带有vba）

Question

I have a column of cells eg "column C" whereby I would like to input a data validation.

I would like to restrict users to key in either "Done", "NA" or "any dates eg 01/10/2016, 31/03/2013 etc"

How do I create the above data validation? I am alright with using either Excel's "Data validation" function or VBA.

Thanks

Answer 1

Pretty simple bit of code here you could make to do whatever, highlight the cell or something, this just sets it back to blank. I would also desensitize them to caps and add some other options like "n/a"

Private sub worksheet_change(byval target as range)
   If Target.Value <> "Done" And Target.Value <> "NA" And Not IsDate(Target.Value) Then
      MsgBox ("incorrect entry, enter only blah or blah...")
      Target.Value = ""
   End If
End Sub