DataGridView: Disable/Enable Edit of Column For Edititng/Adding Row

Private Sub DataGridView_CellBeginEdit(ByVal sender As Object, _
   ByVal e As System.Windows.Forms.DataGridViewCellCancelEventArgs) _
   Handles DataGridView.CellBeginEdit
   If e.RowIndex <> DataGridView.NewRowIndex _
      And e.ColumnIndex = Column.Index Then e.Cancel = True
End Sub