trying to delete automatically added and sorted answers from a VBA textbox into excel cells

Question

I have code that adds and that if an answer is provided based on a certain criteria it adds itself to a list. As I have been troubleshooting the rest of the program I have accrued a lot of answers that have been added. If I select the cells it blinks in and out and if I try to delete manually it gets stuck in a 'loop' and in order to do anything I have to crash excel.

Private Sub Worksheet_SelectionChange(ByVal Target As Range)
'sorts supervisor add list
Const myCol As String = "H"
Const N As Long = 2
Dim r As Long
If Not Intersect(Target, Range(myCol & ":" & myCol)) Is Nothing Then
r = Cells(Rows.Count, myCol).End(xlUp).Row
If r < N Then r = N
With Sheet2.Sort
.SortFields.Clear
.SortFields.add Key:=Range(myCol & N), SortOn:=xlSortOnValues, _ Order:=xlAscending, DataOption:=xlSortNormal
.SetRange Range(myCol & N & ":" & myCol & r)
.Header = xlNo
.MatchCase = False
.Orientation = xlTopToBottom
.SortMethod = xlPinYin
.Apply
End With
For x = r To N + 1 Step -1
If Cells(x, myCol).Value = Cells(x - 1, myCol).Value Then Cells(x, _ myCol).Delete shift:=xlUp
Next 
End If

The error appears to occur on

If Cells(x, myCol).Value = Cells(x - 1, myCol).Value Then Cells(x, _ myCol).Delete shift:=xlUp

also it has had problems deleting the duplicates.

Answer 1

It is generally recommended to disable events inside event processing code if you are likely to trigger the event you are processing.

Delete will cause the Selection to change which will cause this event to fire again. See this excellent post on the topic.

To resolve, add Application.EnableEvents = False at the start and then True at the end.

Private Sub Worksheet_SelectionChange(ByVal Target As Range)

    Application.EnableEvents = False
    '...your code here
    Application.EnableEvents = True

End Sub