personalize Routes in asp.net mvc 4

Question

Good evening everyone.

I am in the middle phase in dotnet MVC 4

for a learning project, I created a web application mvc 4 containing an User profile.

I want to know how to customize the Routing (if that is the term to use):

For example: When a user registers or logs, it has the following link into their browser: http: // localhost / Profile / index

I would rather this: http://localhost/Profile/Username

Where Username is the name of the current user (the one that has just authetifier).

 

Much like facebook. Example: https://www.facebook.com/Ramses 

Thanks.