Unexpected Behavior When Using Entity Framework Core with Lazy Loading Proxies in .NET 7
I've been banging my head against this for hours. I'm encountering unexpected behavior when using Entity Framework Core with lazy loading proxies in my .NET 7 application. I have a simple model with a `Blog` entity that has a collection of `Post` entities. I enabled lazy loading in my `DbContext` like this: ```csharp public class BloggingContext : DbContext { public BloggingContext(DbContextOptions<BloggingContext> options) : base(options) { } public DbSet<Blog> Blogs { get; set; } public DbSet<Post> Posts { get; set; } protected override void OnModelCreating(ModelBuilder modelBuilder) { modelBuilder.Entity<Blog>() .HasMany(b => b.Posts) .WithOne(p => p.Blog) .OnDelete(DeleteBehavior.Cascade); } } ``` In my `Blog` class, I have a collection of `Post` objects: ```csharp public class Blog { public int BlogId { get; set; } public string Url { get; set; } public virtual ICollection<Post> Posts { get; set; } } ``` And my `Post` class looks like this: ```csharp public class Post { public int PostId { get; set; } public string Title { get; set; } public int BlogId { get; set; } public virtual Blog Blog { get; set; } } ``` When I try to retrieve a `Blog` and then access its `Posts` collection, I don't see the expected lazy loading behavior. For instance: ```csharp using (var context = new BloggingContext(options)) { var blog = context.Blogs.Find(1); var posts = blog.Posts; // Should trigger lazy loading } ``` Instead of lazily loading the posts, I get an empty collection. I have ensured that I have installed the necessary package for lazy loading proxies: ``` <PackageReference Include="Microsoft.EntityFrameworkCore.Proxies" Version="7.0.0" /> ``` I also configured it in `OnConfiguring`: ```csharp protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder) { optionsBuilder.UseLazyLoadingProxies(); } ``` I've tried cleaning and rebuilding the solution, and I've verified that the navigation properties are marked as `virtual`. However, the posts still don't load as expected. Is there any special configuration or best practice I might be missing? How can I troubleshoot or resolve this issue?