ImageResizer.ImageBuilder giving error of Could not load type 'System.Web.Hosting.HostingEnvironment' .Net core MVC 6

Question

I am trying to resizing my image if its extension is among .jpg, .jpeg, .png or .webp. below is my code

if (System.IO.Path.GetExtension(newFileName).ToLower() == ".jpg" || System.IO.Path.GetExtension(newFileName).ToLower() == ".png" || System.IO.Path.GetExtension(newFileName).ToLower() == ".jpeg" || System.IO.Path.GetExtension(newFileName).ToLower() == ".webp")
                {
                    var path = Path.Combine(_webHostEnvironment.WebRootPath, CMSUserAreaDir, "content_media/raw/" + newFileName);
                    var image = new ImageResizer.ImageJob(file, path, new ImageResizer.Instructions("maxwidth=1920"), false, false);
                    string a = ImageResizer.ImageBuilder.Current.Build(image).FinalPath;
                }

and I'm getting this error Anyone please help me to know what I'm doing wrong. Thanks in advance.

I am not sure if I am missing any packages in my setup for this to happen, or I am not supposed to use ImageJob in this manner.

When I'm looking at packages for ImageResizer its shows message like this

Answer 1

above issue is resolved. note that ImageResizer is not compatible with .net 6 yet, maybe it will in future. Till then there are many alternatives available, I've used SixLabors.Imagesharp to resolved my issue. here is updated code :

var path = Path.Combine(_webHostEnvironment.WebRootPath, CMSUserAreaDir, "content_media/raw/" + newFileName);
                //var image = new ImageResizer.ImageJob(file, path, new ImageResizer.Instructions("maxwidth=1920"), false, false);
                //string a = ImageResizer.ImageBuilder.Current.Build(image).FinalPath;
                using (var image = Image.Load(file.OpenReadStream()))
                {
                    if (image.Width > 1920)
                    {
                        image.Mutate(x => x.Resize(new ResizeOptions
                        {
                            Size = new Size(1920, 0),
                            Mode = ResizeMode.Max
                        }));
                    }

                    image.Save(path);
                }

you need to add these packages:

<PackageReference Include="SixLabors.ImageSharp" Version="3.0.0" />

Answer 2

I created ImageResizer and Imageflow. You should use Imageflow.Net on .NET 6. ImageResizer is for legacy .NET.

Imageflow .NET Server is generally the best thing to use for during-a-request image processing since it ships with proper disk caching, but Imageflow.Net offers the equivalent to ImageResizer's .Build method.