Cascading Dropdownlist & ViewModel

Department has one to many Districts

Districts has one to many Stores

And in the end of the view, this is my JS section:

This section calls this action:

And that's it.

When I run the application, well, the District dropdownlist don't populate

_Questions:

• Is it possible that I can't access this properties inside the JScript

  "#DepartmentID"

  like this since I'm using a viewmodel? Maybe I need to change it to something like "#Departments.DepartmentID"?

• Could this work using a ViewModel? I'm not adding the Department property inside the Store model because it would be irrelevant since it gets its Department thru the District.

• I saw in the example that I followed that they added this line ProxyCreationEnabled = false Inside the JsonResult action. I didn't add it because I don't know what it does and don't know the consecuences in my application if I add it.

Thanks in advance for any help.

Regards,

List DistrictList = _context.Districts.
      Where(x => x.DepartmentID == DepartmentID).ToList();