Handling FileContentResult when file is not found

Question

I have a controller action that downloads a file from an azure blob based on the container reference name (i.e. full path name of the file in the blob). The code looks somet

Answer 1

In ASP.NET Core, use NotFound()

Your controller must inherit of Controller and the method must return ActionResult

Example:

public ActionResult GetFile(string path)
{
    if (!File.Exists(path))
    {
        return NotFound();
    }
    return new FileContentResult(File.ReadAllBytes(path), "application/octet-stream");
}