How do I know the the complete virtual path that my application is currently hosted? For example:
http://www.mysite.com/myApp
or
http://www.mysite.com/myApp/mySubApp
I know the application path of HttpRequest but it only returns the folder name that my application is currently hosted, but how do I get the initial part?
The domain name part of the path is not really a property of the application itself, but depends on the requesting URL. You might be able to reach a single Web site from many different host names. To get the domain name associated with the current request, along with the virtual path of the current application, you could do:
Request.Url.GetLeftPart(UriPartial.Authority) + Request.ApplicationPath
Technically, an "application" is a virtual directory defined in IIS and Request.ApplicationPath
returns exactly that. If you want to get the folder in which the current request is handled, you can do this:
VirtualPathUtility.GetDirectory(Request.Path)
ASP.NET has no idea how to distinguish your sub-application from a bigger application if it's not defined as a virtual directory in IIS. Without registering in IIS, it just sees the whole thing as a single app.