How can I create a Grid with it's X and Y axis bound to different collections?

Question

I need to display something that shows a Week of days along the Columns, and a list of Categories along the Rows, and a list of Tasks that are due in the Cells (See sketch b

Answer 1

I think I might have found a way to do it... I need to rearrange my Data a bit

• My main ViewModel will contain ObservableCollection CurrentWeek and ObservableCollection CurrentTasks

• The Category class should have ObservableCollection Tasks

• And Task should have ObservableCollection Occurences

The main ViewModel should also subscribe to CurrentWeek.CollectionChanged, and based on what the dates are in the collection, update each Category.Task[x].Occurences if Category.Task.IsRecurring == true

Then I think I can use the following structure to get what I want. I'll update this post when I know if this works or not

Update: It works :)