How can I get the root domain URI in ASP.NET?

Question

Let\'s say I\'m hosting a website at http://www.foobar.com.

Is there a way I can programmatically ascertain \"http://www.foobar.com/\" in my code behind (i.e. witho

Answer 1

To get the entire request URL string:

HttpContext.Current.Request.Url

To get the www.foo.com portion of the request:

HttpContext.Current.Request.Url.Host

Note that you are, to some degree, at the mercy of factors outside your ASP.NET application. If IIS is configured to accept multiple or any host header for your application, then any of those domains which resolved to your application via DNS may show up as the Request Url, depending on which one the user entered.