base url in an ASP.NET app

I recently needed to generate urls in my codebehind that were full urls to the site. This required getting the url to the root of the site so I could then add the directory/file to that root. The following does, I believe, handle all cases. It has passed all of our tests so far:

string baseUrl = Request.Url.Scheme + "://" + Request.Url.Authority + Request.ApplicationPath.TrimEnd('/') + '/';

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Comments

[Chris M]

Or Request.Url.GetLeftPart(UriPartial.Authority).

[John]

httpcontext.current

this is available everywhere since its static itself

[Jordan]

Ok, now how do you do that when you don't have a HttpRequest. Like say in the constructor or a static method. There has to be a way, this is silly.

[Tim Wilson]

Awesome! Thanks!

[proka]

useful, 10x