public void Select(LadderNetworkViewModel lnvmodel)
{
if (this == Empty)
{
return;
}
LadderDiagramViewModel ldvmodel = lnvmodel.LDVModel;
ProjectModel pmodel = ldvmodel.ProjectModel;
InteractionFacade ifacade = pmodel.IFacade;
ldvmodel.AcquireArea(this);
ifacade.MainTabControl.ShowItem(ldvmodel);
}