如何使用保存在DB中的值实现Like / Different按钮（或链接）？

I plan to develop a website [asp.net mvc4, C#, simplemembership and EF] where my users can create a post, and users (owner of the post or the others) could like/unlike it. At this point, I can't see how to implement this feature. I thought about many things :I plan to develop a website [asp.net mvc4, C#,