注销浏览器后退按钮然后返回最后一个屏幕

Hello I am developing a solution in MVC in first time so I am facing a big issue, When I logout from my application(mvc razor web application) it displays login page, but if i press browser back button it displays last screen, i don't want this, i want if i press back button it still display same login page. here is my code for logoutHello I am developing a solution in MVC in firs