title: Communication between User Controls
body: <p>I have a <code>TabControl</code> with two tabs. One tab has a list of stores and the other has a list of employees. On the store tab I have a button that displays all employees of the store; to do that, I want to switch to the other tab and invoke a <code>showEmployeesFromStore(store_id store)</code> method from that tab's User Control. How would I do that? </p>