Can you point me to other resources?

Thanks, Mike

Plus, the video quality is terrible, I can't see the code.

So the bottom line is a big miss. Because obviously you know a lot, and we desperately need sources of information and samples on mvc.

from category in categories

group category by category.ParentID into category_group

select category_group;

That produces an IGrouping<int, Category> which is a hashtable whose key is the Category ID and whose value is an IEnumerable<Category> with categories whose parent ID is the key.

[C#]

categories.GroupBy(c => c.ParentID)

[VB]

categories.GroupBy(Function(c) c.ParentID)

P.S: The guest speaker is almost impossible to hear/understand, specially for me who not talk/use english as my main language. Maybe it would be nice with text in that part of your movies where the guest speakers are involved..

CommerceDB DB = new CommerceDB();

IList<category> categories = DB.categories.Where(c => c.ID == 0).ToList();

Subs:

IList<Category> subCategoriesToCategoryId1 = categories.Single(c => c.ID == 1).subCategories.ToList();

Is that a stupid solution?

(I am quite new to ASP.NET)

IList<category> categories = DB.categories.Where(c => c.parentID == 0).ToList();

Thank you