在asp.net web窗体中防止跨站点请求伪造(csrf)攻击

I have created an ASP.Net Web form application using Visual Studio 2013 and I am using Dot Net Frame Work 4.5, and I want to make sure my site is secure from Cross-Site Request Forgery (CSRF), I have found many articles talking about how this feature is implemented on MVC apps, but a very few talking about web forms, on I have created an ASP.Net Web form application