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. without having to hardcode it in my web config)?
14 Answers
HttpContext.Current.Request.Url can get you all the info on the URL. And can break down the url into its fragments.
string hostUrl = Request.Url.Scheme + "://" + Request.Url.Host; //should be "http://hostnamehere.com"
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.
C# Example Below:
string scheme = "http://";
string rootUrl = default(string);
if (Request.ServerVariables["HTTPS"].ToString().ToLower() == "on")
{
scheme = "https://";
}
rootUrl = scheme + Request.ServerVariables["SERVER_NAME"].ToString();
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