I'm trying to make a simple Blog-application, but I'm a bit stuck on the architecture of the application.

I'd like to create a details-page with the content of the blog-post and a form for adding comment to the post.

My code looks like the following:


public class PostDetailsViewModel
    public Post Post { get; set; }

    public string Comment { get; set; }

    public string Author { get; set; }


public class BlogService {
    public void AddComment(int postId, PostDetailsViewModel model) {
        using(var context = new ApplicationDbContext()) {
            Post post = context.Posts.Include(x => x.Comments).Single(x => x.Id == postId);
            Comment comment = new Comment();
            comment.Content = model.Content;
            comment.Author = model.Author;
            comment.TimeStamp = DateTime.Now;



class BlogController{
    public IActionResult Details(int id)
            PostDetailsViewModel model = service.GetPostDetails(id);
            return View(model);

    public IActionResult Details(int id, PostDetailsViewModel model)
            if (ModelState.IsValid)
                service.AddComment(id, model);
                return RedirectToAction("Details", new { id = id });

            return View(model);

I already did a lot of research on architectural best-practices, but I can't see the wood for the trees anymore...

Could someone provide me with some best-practices/improvements on my architecture?

Thank you in advance!

  • @GregBurghardt: well, it doesn't really answer my question how to create a viewmodel that contains a) data to show in the view b) properties for model-binding in a form
    – Sam
    Dec 8, 2022 at 16:39
  • I see now. I retracted my duplicate vote. Dec 8, 2022 at 18:28
  • Can you edit your question to include information from your last comment? Asking for "best practices" usually results in questions being closed as opinion-based or needing focus. The additional requirement of how to design this specific page for details and data entry might make this a better fit. Dec 8, 2022 at 18:30
  • 1
    Can you focus your question on the problem you have with your current design? Asking for general feedback or best practices prevents the community from agreeing on a single objective answer. Dec 8, 2022 at 20:04


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