public void Close()
 {
     if (!IsClosed)
     {
         _Form?.Close();
     }
     _Form = null;
 }
        public void Show()
        {
            IsClosed           = false;
            _Form              = new TExtentionMenuView();
            _Form.DataContext  = this;
            _Form.Deactivated += _Form_Deactivated;
            _Form.Closing     += _Form_Closing;


            _Form.ShowAsActive();
        }