public void SignIn()
{
UpdateUser();
CurControl = MenuControl = new MenuControl();
Dictionary <string, UserControl> elements = new Dictionary <string, UserControl>();
elements.Add("Тесты", new CatalogControl());
elements.Add("Мои тесты", new CatalogControl(User.Id));
elements.Add("Приглашения", new InvitationsControl());
elements.Add("Профиль", new ProfileControl());
MenuControl.Use(elements);
MenuControl.Back();
MenuControl.Updated += (elements["Тесты"] as CatalogControl).UpdatePagesNav;
MenuControl.Updated += (elements["Приглашения"] as InvitationsControl).UpdatePagesNav;
MenuControl.Updated += (elements["Мои тесты"] as CatalogControl).UpdatePagesNav;
TestEditControl = new TestEditControl();
QuestionEditControl = new QuestionEditControl();
}