How do you resolve a virtual path to a file under an OWIN host?

Question

Under ASP.NET and IIS, if I have a virtual path in the form "~/content", I can resolve this to a physical location using the MapPath method:

HttpContext.Server.MapPath("~/content"); 

How can you resolve a virtual paths to a physical location under an OWIN host?

Answer 1

You may use AppDomain.CurrentDomain.SetupInformation.ApplicationBase to get root of your application. With the root path, you can implement "MapPath" for Owin.

I do not know another way yet. (The ApplicationBase property is also used by Microsoft.Owin.FileSystems.PhysicalFileSystem.)

Answer 2

You shouldn't use HttpContext.Server as it's only available for MVC. HostingEnvironment.MapPath() is the way to go. However, it's not available for self-hosting owin. So, you should get it directly.

var path = HostingEnvironment.MapPath("~/content"); if (path == null) {     var uriPath = Path.GetDirectoryName(Assembly.GetExecutingAssembly().GetName().CodeBase);     path = new Uri(uriPath).LocalPath + "/content"; }