[c#] Get current application physical path within Application_Start

I'm not able to get the current physical path within Application_Start using

HttpContext.Current.Request.PhysicalApplicationPath

because there is no Request object at that time.

How else can I get the physical path?

I created a website with ASP.Net WebForms where you can see the result of using all forms mentioned in previous responses from a site in Azure.

http://wfserverpaths.azurewebsites.net/

Summary:

Server.MapPath("/") => D:\home\site\wwwroot\

Server.MapPath("~") => D:\home\site\wwwroot\

HttpRuntime.AppDomainAppPath => D:\home\site\wwwroot\

HttpRuntime.AppDomainAppVirtualPath => /

AppDomain.CurrentDomain.BaseDirectory => D:\home\site\wwwroot\

HostingEnvironment.MapPath("/") => D:\home\site\wwwroot\

HostingEnvironment.MapPath("~") => D:\home\site\wwwroot\

use below code

server.mappath() in asp.net

application.startuppath in c# windows application

Use Server.MapPath("~")

Best choice is using

AppDomain.CurrentDomain.BaseDirectory

because it's in the system namespace and there is no dependency to system.web

this way your code will be more portable

There is also the static HostingEnvironment.MapPath

You can also use

HttpRuntime.AppDomainAppVirtualPath

System.AppDomain.CurrentDomain.BaseDirectory

This will give you the running directory of your application. This even works for web applications. Afterwards, you can reach your file.

You can use this code:

AppDomain.CurrentDomain.BaseDirectory

There's, however, slight difference among all these options which

I found out that

If you do

    string URL = Server.MapPath("~");

or

    string URL = Server.MapPath("/");

or

    string URL = HttpRuntime.AppDomainAppPath;

your URL will display resources in your link like this:

    "file:///d:/InetPUB/HOME/Index/bin/Resources/HandlerDoc.htm"

But if you want your URL to show only virtual path not the resources location, you should do

    string URL = HttpRuntime.AppDomainAppVirtualPath; 

then, your URL is displaying a virtual path to your resources as below

    "http://HOME/Index/bin/Resources/HandlerDoc.htm"