//added to ComponentSelected Event when Link button is clicked
public void StartTempConnector(ComponentViewModel start, EventArgs e)
{
//Create temporary connector for visual display
TemporaryConnectorViewModel temp = new TemporaryConnectorViewModel(start as SystemViewModel);
ComponentVMs.Add(temp);
//remove handler from event to prevent being called again
ComponentSelected -= StartTempConnector;
//create event handler closure to remember start
ComponentSelectionHandler h = null;
h = (end, args) =>
{
//create real connector with remembered start and new end
CreateConnector(start as SystemViewModel, end as SystemViewModel);
//remove h so not called again
ComponentSelected -= h;
//remove temporary connector
ComponentVMs.Remove(temp);
};
//add anonymous event handler "h" to ComponentSelected
ComponentSelected += h;
}
void OnComponentSelected(ComponentViewModel cvm, EventArgs e)
{
SelectedComponentVM = cvm;
}