ASP.NET MVC 2 Reload Pages Without Refresh And Keep URL Changing

I am creating a project using ASP.NET MVC. I want to show content of pages in the placeholder without refreshing the page, something like ajax but WITH the URL changing, How can I

Solution 1:

If you change the url of the browser this will automatically perform a redirect and refresh the entire page. You could use the hash sign (#) which doesn't trigger a refresh. For example if you change /home/index#foo to /home/index#bar the page won't refresh but you could send an AJAX request behind the scenes to update some placeholder.

Solution 2:

I've used the jQuery BBQ plugin (http://benalman.com/projects/jquery-bbq-plugin/) with great success. This and the jQuery Templating engine would be great for what you are trying to accomplish.