Error "NullReferenceException" received when saving changes in EF6 for VB - vb.net

Question

Here is the console app VB.NET code:
Imports System.Data.Entity
Imports System.Linq
Imports System.Configuration
Module Module1
Sub Main()
Using db = New BloggingContext()
Console.Write("Enter a name for a new Blog: ")
Dim name = Console.ReadLine()
Dim blogt As New Blog()
With blogt
.Name = name
End With
db.Blogs.Add(blogt)
db.SaveChanges()
Dim query = From b In db.Blogs
Order By b.Name
Console.WriteLine("All blogs in the database:")
For Each item In query
Console.WriteLine(item.Name)
Next
Console.WriteLine("Press any key to exit...")
Console.ReadKey()
End Using
End Sub
Public Class Blog
Public Property BlogId() As Integer
Public Property Name() As String
End Class
Public Class BloggingContext
Inherits DbContext
Public Sub New()
MyBase.New("dbConnString")
End Sub
Public Blogs As DbSet(Of Blog)
End Class
End Module
My error points to this line in Main() 'db.Blogs.Add(blogt)' stating "System.NullReferenceException: Object reference not set to an instance of an object."
When I mouse over db.Blogs.Add(blogt), it tells me that db.Blogs is nothing. I converted the same code into C# and it works perfectly:
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Data.Entity;
namespace CodeFirstNewDatabaseSample
{
class Program
{
static void Main(string[] args)
{
using (var db = new BloggingContext())
{
// Create and save a new Blog
Console.Write("Enter a name for a new Blog: ");
var name = Console.ReadLine();
var blog = new Blog { Name = name };
db.Blogs.Add(blog);
db.SaveChanges();
// Display all Blogs from the database
var query = from b in db.Blogs
orderby b.Name
select b;
Console.WriteLine("All blogs in the database:");
foreach (var item in query)
{
Console.WriteLine(item.Name);
}
Console.WriteLine("Press any key to exit...");
Console.ReadKey();
}
}
}
public class Blog
{
public int BlogId { get; set; }
public string Name { get; set; }
public virtual List<Post> Posts { get; set; }
}
public class Post
{
public int PostId { get; set; }
public string Title { get; set; }
public string Content { get; set; }
public int BlogId { get; set; }
public virtual Blog Blog { get; set; }
}
public class BloggingContext : DbContext
{
public BloggingContext()
: base("dbConnString")
{
//Database.SetInitializer<BloggingContext>(new CreateDatabaseIfNotExists<BloggingContext>());
}
public DbSet<Blog> Blogs { get; set; }
public DbSet<Post> Posts { get; set; }
}
}
Not sure what's missing. I've read all the other EF posts regarding the NullReferenceException error when attempting to SaveChanges, but none have resolved the issue for me yet. Where's Waldo in this?

Answer 1

Blogs is not a property in the VB code, it should be:
Public Property Blogs As DbSet(Of Blog)
Without "Property" it's just a member variable, so it's not automatically initialized by the DbContext.