[Solved] Hierarchical On-Demand Binding

[Dannie F]

Hi I'm evaluation TreeView for use in a project I'm working on. The data looks like this:

Region 1

    -- State 1

         -- City 1

         -- City 2

-- State 2

Region 2

-- State 3

-- State 4

I would like to bind the regions on the server then bind the states on-demand. When a state is clicked, I'd like to bind the cities on-demand.

I see in the examples where this can be done but my problem, the ajax call is done to one controller method and a TreeViewModel is passed but I  don't see a way of knowing if I should be loading State data or City data.

Is this possible? If not, how can I work around it?

Thanks

[Dannie F]

I actually worked around this problem by supplying a composite value to the tree node like "state:{id}" and "region:{id}".