.Net Core - Referenced file is not found when publish

Question

Im using ImageSharp with .Net Core to process some images. To load the images and fonts I do as follows:

_image = Image.Load(@"Resources/imgs/quote_background.png");

_fonts = new FontCollection();
_font = _fonts.Install(@"Resources/fonts/Cousine-Italic.ttf");

// Image processing...

My files tree looks like:

    - Solution
    - - MyApp
    - - - Controllers
    - - - Models
    - - - - Code.cs // This is where the above code is
    - - - wwwroot
    - - - Resources
    - - - - imgs
    - - - - fonts

When I am launching the application through visual studio it works fine, it finds the image. But when I deploy to AWS or to my local IIS I get the following error:

DirectoryNotFoundException: Could not find a part of the path 'C:\inetpub\wwwroot\MyApp\Resources\imgs\quote_background.png'.

What is the right way to reference this image?

Thanks

Answer 1

You need to use the ContentRootPath from the IHostingEnvironment, which requires you to inject an IHostingEnvironment into your controller, e.g.:

public class ImageController : Controller
{
    private readonly IHostingEnvironment _hostingEnvironment;

    public ImageController(IHostingEnvironment hostingEnvironment)
    {
        _hostingEnvironment = hostingEnvironment;
    }

    public ActionResult Index()
    {
        var image = Image.Load(String.Format(@"{0}/Resources/imgs/quote_background.png", 
            _hostingEnvironment.ContentRootPath);
        //etc...
    }
}

There is also WebRootPath which gets you to the wwwroot.