By cross selection I mean the data that becomes selected when another set of data is being selected.
E.g. I have a sheet where I display a map, and another sheet where I have a list of customers. Each customer has an address. On the map I select some cities. The second sheet now displays only the customers who live in these cities.
I can get the list of the selected cities. Which method or a set of methods I should now call to get the list of the customers?
In the code:
using (var app = await location.AppAsync(appIdentifier))