Handling Lazy Loading with Entity Framework Core 6 - Unexpected Null Reference Issues
I'm wondering if anyone has experience with I'm deploying to production and I'm currently working on an ASP.NET Core application using Entity Framework Core 6... I have a scenario where I'm using lazy loading to retrieve related entities, but I'm encountering a `NullReferenceException` when accessing properties of the lazy-loaded navigation properties. Here’s a simplified version of my model: ```csharp public class Blog { public int BlogId { get; set; } public string Name { get; set; } public virtual ICollection<Post> Posts { get; set; } } public class Post { public int PostId { get; set; } public string Title { get; set; } public int BlogId { get; set; } public virtual Blog Blog { get; set; } } ``` In my DbContext, I have configured lazy loading like this: ```csharp public class ApplicationDbContext : DbContext { public ApplicationDbContext(DbContextOptions<ApplicationDbContext> 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 controller, I have the following code to retrieve a blog and display its posts: ```csharp public async Task<IActionResult> Details(int id) { var blog = await _context.Blogs.FindAsync(id); return View(blog); } ``` However, when I try to access `blog.Posts` in my view, I get a `NullReferenceException` when the blog has no posts. I've tried checking if `blog.Posts` is null before iterating over it, but that doesn't seem to resolve the issue. I've also verified that the `LazyLoadingProxies` are enabled in my `Startup.cs`: ```csharp services.AddDbContext<ApplicationDbContext>(options => options.UseLazyLoadingProxies() .UseSqlServer(Configuration.GetConnectionString("DefaultConnection"))); ``` If anyone has insights on how to properly handle this situation or why I might be experiencing this exception, I would greatly appreciate any help. I'm currently stuck on this and need to ensure that my application handles these edge cases effectively. I'm coming from a different tech stack and learning C#. My team is using C# for this REST API. Thanks for any help you can provide!