void OwnerCanvas_ElementRemoved(object sender, ElementArgs e)
{
MissionElement mElement = e.Element as MissionElement;
if (mElement == null)
return;
if (mlControl.HasMission(e.Element.Caption))
mlControl.RemoveMission(e.Element.Caption);
}
protected void OnElementRemoved(ElementArgs e)
{
EventHandler<ElementArgs> handler = ElementRemoved;
if (handler != null)
handler(this, e);
}