How to get list of contacts in specific engagement plan state?

Question

I have an engagement plan and there are number of contacts in each state.

How can I programmatically obtain list of contacts which are in specific engagement plan state by state ID?

Answer 1

Have just found a method:

var pageableContactIds = AutomationManager.Provider.GetEnrolledContactsIdsByStatePaged(engagementPlanStateId);

This will return an object of type Sitecore.Common.IPageable<ID> which provides a method .GetAll()

Seems to work for me.