How to get full host name + port number in Application_Start of Global.aspx?

Question

I tried

Uri uri = HttpContext.Current.Request.Url;
String host = uri.Scheme + Uri.SchemeDelimiter + uri.Host + \":\" + uri.Port;

and it wo

Answer 1

The accepted answer is good, but in most cases (if the first request is a HTTP Request) you should better use the Session_Start event, which is called once per user every 20 minutes or so (not sure how long the session is valid). Application_BeginRequest will be fired at every Request.

public void Session_Start(Object source, EventArgs e)
{
   //Request / Request.Url is available here :)
}