private void RemoveAdorner(IGaugeItem gaugeItem)
{
int index = _gaugeItemSelectedList.IndexOf(gaugeItem);
_gaugeItemSelectedList.RemoveAt(index);
Adorner adorner = _adornerList[index];
adorner.IsOpen = false;
_adornerList.RemoveAt(index);
this.CanvasGrid.Children.Remove(adorner.Popup);
adorner.Dispose();
}
