What is the best way to get the base url from the controller

Question

Inside my controller, how would I get the base URL.

for example if my url:

http://www.mysite.com/MyController/MyAction 

I want to get the returned function:

 http://www.mysite.com 

Answer 1

I use:

 Request.Url.GetLeftPart(UriPartial.Authority); 

Answer 2

This is the method that I use in my C # application

  public static string base_url() { return string.Format("{0}://{1}/", HttpContext.Current.Request.Url.Scheme, HttpContext.Current.Request.Url.Authority); } 

Note that this returns the port also if your development server uses a different port than 80