Comments on: Get Application Path [C# / ASP.NET]

By: arash

arash — Sat, 10 Oct 2009 12:26:38 +0000

string relative = System.Web.HttpContext.Current.Request.Url.AbsoluteUri;
relative = relative.Substring(0, relative.LastIndexOf(”/”));

By: NAME

NAME — Wed, 10 Jun 2009 03:10:30 +0000

Save yourselves some time:
HttpContext.Current.Request.PhysicalApplicationPath

By: eok

eok — Mon, 24 Nov 2008 22:36:50 +0000

Request.Url.GetLeftPart(UriPartial.Authority) + Page.ResolveUrl(”~/Page.aspx”)

By: Steve71

Steve71 — Fri, 17 Oct 2008 14:31:06 +0000

My personal method, not as short as others, but fail-proof and ultra-tested. Bye!

public static class clsHTTPManager
{
public static string GetApplicationUrl()
{
HttpContext ctx = HttpContext.Current;

string toReturn = (string)ctx.Cache.Get(“ApplicationUrl”);

if (String.IsNullOrEmpty(toReturn))
{
string protocol = ctx.Request.ServerVariables.Get(“SERVER_PORT_SECURE”);
string port = ctx.Request.ServerVariables.Get(“SERVER_PORT”);
string host = ctx.Request.ServerVariables.Get(“SERVER_NAME”);

if (protocol.Equals(“off”, StringComparison.OrdinalIgnoreCase) || protocol.Equals(“0”))
protocol = “http://”;
else
protocol = “https://”;

if (port.Equals(“80”))
port = String.Empty;
else
port = “:” + port;

toReturn = String.Format(”{0}{1}{2}{3}”, protocol, host, port, ctx.Request.ApplicationPath);

ctx.Cache.Insert(“ApplicationUrl”, toReturn);
}

return toReturn;
}
}

By: Quang Vo

Quang Vo — Wed, 24 Sep 2008 09:32:17 +0000

You can try it this way and it works great. http://connectionstringexamples.com/article.php?story=20080924032917497

By: Gauthier Segay

Gauthier Segay — Sun, 13 Jul 2008 20:11:54 +0000

This is so scary how unfriendly ASP.NET can be…

I’ve refactored the function to something that is Page agnostic and with less duplication of unecessary property access:

public string GetApplicationAbsolutePath(Uri requestUri, string siteRootRelativeApplicationPath) {
string
requestAbsoluteUri = requestUri.AbsoluteUri,
requestAuthority = requestUri.Authority;
return
requestAbsoluteUri.Substring(0,
requestAbsoluteUri.IndexOf(
siteRootRelativeApplicationPath.ToLower(),
requestAbsoluteUri.IndexOf(
requestAuthority,
StringComparison.InvariantCultureIgnoreCase
)
+ requestAuthority.Length,
StringComparison.InvariantCultureIgnoreCase
)
+ siteRootRelativeApplicationPath.Length
);
}

By: Allan McLemore

Allan McLemore — Sat, 05 Apr 2008 17:23:20 +0000

I’ll have to try this methodology. You can use Singleton pattern on this and persist the Application path in an object property. That way the evaluation only happens once in each application instance.

I took a slightly different approach to solving this issue. When you try to generate Urls using the various values built into ASP.NET (ApplicationPath, “~”, etc), you will encounter problems in some scenarios.

Check out my post on this issue: http://www.zenternal.com/weblog/?p=6

The code sample provided in my article does not address the issue with ASP.NET returning localhost when running on XP Workstation. However, the URL methodology in the code can be improved to use System.Environment.MachineName whenever Request.ServerVariables[“SERVER_NAME”] returns localhost. I’ll try to post an update to the article soon.

By: Ken

Ken — Tue, 01 Apr 2008 19:54:46 +0000

This requires less code:

Request.Url.AbsoluteUri.Substring(0, Request.Url.AbsoluteUri.LastIndexOf(”/”))