Preview an ASP.NET page
Microsoft Expression Development Server enables you to preview both ASP.NET pages and PHP pages locally.
To use Expression Development Server to preview pages
On the Site menu, click Site Settings.
In the Site Settings dialog box, on the Preview tab, select Use Microsoft Expression Development Server, and then select For only PHP and ASP.NET pages.
To preview an ASP.NET page
With the ASPX page that you want to preview open, do one of the following:
Press F12.
On the Common toolbar, click the Preview button , or click the arrow next to the button to select a browser.
On the File menu, point to Preview in Browser, and then click the browser and window size you want.
Note You must save your page before you preview it in a browser.