I want a commandbutton to sort A3:Q. Though column Q is included in the
range, the cells in column Q may be empty. Therefore, I need to locate the
last row using column A, then sort A3:Q(lastrow).

Here is the code I was working with:

Private Sub CommandButton3_Click()
Lastrow = Range("A65536").End(xlUp).Select
Range("A3:Q" & Lastrow).Select
Selection.Sort Key1:=Range("A3"), Order1:=xlAscending, Key2:=Range("B3") _
, Order2:=xlAscending, Header:=xlGuess, OrderCustom:=1, MatchCase:= _
False, Orientation:=xlTopToBottom
End Sub

Thanks for your help!

Les