How It Works
Although this seems to be a simple exercise that uses basic Windows skills, it serves to show that VS
creates a copy of the file when it adds it to the site. So, the original Styles.css file on the desktop is
not affected when you make changes to the copy in VS. This way, it’s easy to drag and drop files from
existing websites into your new one without affecting the originals. The same applies to files you add
using the Add Existing Item dialog box in VS.
If you have added files to your website’s folder outside of VS, they may not show up right away.
You can get a fresh copy of the file list by clicking the Refresh button on the Solution Explorer’s
toolbar.