private void courseOrderMenu_Click(object sender, EventArgs e)
{
// Initialize dialog.
ChangeCourseOrder courseOrderDialog = new ChangeCourseOrder(controller.GetAllCourseOrders());
// Show the dialog.
DialogResult result = courseOrderDialog.ShowDialog(this);
// Apply the changes.
if (result == DialogResult.OK) {
controller.SetAllCourseOrders(courseOrderDialog.GetCourseOrders());
}
courseOrderDialog.Dispose();
}