ASP.NET - Getting the Virtual Application Root Path for Your Site

HttpContext.Current.Request.ApplicationPath

I had to blog this here, because I have the need for it every once in a while, but not frequent enough to remember it... :)

Examples:
A site hosted without a virtual directory: mysite.com/
Returns: "/"

A site hosted from a virtual directory: mysite.com/myVirtualDir
Returns: "/myVirtualDir"

See the MSDN Documentation for more details and code examples.
See the "ASP.NET Web Site Paths" article for more ways to discover paths.