Using ImageResizer with FileResult, ASP.NET MVC?

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C#

MVC

ImageResizer

We have the following Controller for getting file:

[SessionState(SessionStateBehavior.Disabled)]
public class FileController : BaseController
{
    [HttpGet]
    public FileResult Index(long id)
    {
        if (id <= 0) return null;
        Attachment attachment = Service.GetAttachmentById(id);
        if (attachment == null) return null;
        new Task(() => Service.IncreaseAttachmentViewCount(id)).Start();
        string filename = attachment.Name;
        //"application/octet-stream";
        string mimeType = System.Web.MimeMapping.GetMimeMapping(filename);
        return File(attachment.Path, mimeType);
    }
}

It's OK and works well but it doesn't work with ImagResizer[^] API
e.g:
The following image shows in natural size(1920*1200) and maxwidth or maxheight doesn't work at all. But if I use the absolute file path it works.

<img src="File/Index/1231?maxwidth=300&maxheight=300" alt="" />