public void EditPlacement(Placement m_Placement)
 {
     DBPlacement.EditPlacement(m_Placement);
 }
 public void DeletePlacement(int id)
 {
     DBPlacement.DeletePlacement(id);
 }
 public void AddPlacement(Placement m_Placement)
 {
     DBPlacement.AddPlacement(m_Placement);
 }