private void deleteAllEdgeTapesFromDetail()
{
if (_table != null)
{
_table.RemoveAllEdgeTapesFromDetail(_selectedDetail);
}
this.SelectedEdgeTapeOne = null;
this.SelectedEdgeTapeTwo = null;
this.SelectedEdgeTapeThree = null;
this.SelectedEdgeTapeFour = null;
}