//click new appointment button
private void newApptButton_Click(object sender, RoutedEventArgs e)
{
NewApptWindow newApptWindow = new NewApptWindow();
//newApptWindow.Owner = this; //TODO idk if i should remove this
newApptWindow.Show();
}
} //dont understand how binding works but if this is gone it stops working
public NewApptWindow()
{
patientList = new ObservableCollection <Patient>();
NewApptWindow.newWindowOpened += handleNewWindow;
MainWindow.mainClosed += handleMainClose;
NewApptWindow.newWindowOpened(this, null);
InitializeComponent();
this.PatientList.SelectionChanged += Patient_Selected;
loadPatients();
}