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Javascript Event For When CascadingDropdown Finishes Populating?

I have a State DDL and a Country DDL. I have CascadingDropdown controls for each of those DDLs.

When the user selects an entry from the Country DDL, the State dropdown gets populated with the results of a service method call.

I want to disable a submit button while the State dropdown is populating. Is there a way to capture when the State DDL finishes populating so that I can do this in JavaScript?

Solution

  • CascadingDropdown provides no such JavaScript event as far as I have seen.