Linq: C# to VB conversion help needed

[JumpyNET]

I am trying to convert the C# LongListSelectorSample from http://phone.codeplex.com/ to VisualBasic.

Here is the original C# code (with the problematic linq-query included):

        private void LoadLinqMovies()
        {
            List<Movie> movies = new List<Movie>();

            for (int i = 0; i < 50; ++i)
            {
                movies.Add(Movie.CreateRandom());
            }

            var moviesByCategory = from movie in movies
                                   group movie by movie.Category into c
                                   orderby c.Key
                                   select new PublicGrouping<string, Movie>(c);

            linqMovies.ItemsSource = moviesByCategory;
        }

And here is my VB attempt to populate the LongListSelector with grouped movie items:

    Private Sub LoadLinqMovies()
        Dim MovieList As New List(Of Movie)

        For i As Integer = 0 To 49
            MovieList.Add(Movie.CreateRandom())
        Next

        Dim MoviesByCategory = _
                       From OneMovie In MovieList _
                       Group OneMovie By Cat = OneMovie.Category _
                       Into GroupedMovies = Group _
                       Select New PublicGrouping(Of String, Movie)(GroupedMovies)

        Movies_LLS.ItemsSource = MoviesByCategory
    End Sub

Apparently something goes wrong with the linq query but what?