Get image from wwwroot/images in ASP.Net Core

Question

I have an image in wwwroot/img folder and want to use it in my server side code.

How can I get the path to this image in code?

The code is like this:

Graphics graphics = Graphics.FromImage(path) 

Answer 1

Building on Daniel's answer, but specifically for ASP.Net Core 2.2:

Use dependency injection in your controller:

[Route("api/[controller]")] public class GalleryController : Controller {     private readonly IHostingEnvironment _hostingEnvironment;     public GalleryController(IHostingEnvironment hostingEnvironment)     {         _hostingEnvironment = hostingEnvironment;     }              // GET api/<controller>/5     [HttpGet("{id}")]     public IActionResult Get(int id)     {         var path = Path.Combine(_hostingEnvironment.WebRootPath, "images", $"{id}.jpg");         var imageFileStream = System.IO.File.OpenRead(path);         return File(imageFileStream, "image/jpeg");     } } 

A concrete instance of the IHostingEnvironment is injected into your controller, and you can use it to access WebRootPath (wwwroot).

Answer 2

It would be cleaner to inject an IHostingEnvironment and then either use its WebRootPath or WebRootFileProvider properties.

For example in a controller:

private readonly IHostingEnvironment env; public HomeController(IHostingEnvironment env) {     this.env = env; }  public IActionResult About(Guid foo) {     var path = env.WebRootFileProvider.GetFileInfo("images/foo.png")?.PhysicalPath } 

In a view you typically want to use Url.Content("images/foo.png") to get the url for that particular file. However if you need to access the physical path for some reason then you could follow the same approach:

@inject Microsoft.AspNetCore.Hosting.IHostingEnvironment env @{   var path = env.WebRootFileProvider.GetFileInfo("images/foo.png")?.PhysicalPath }