Hi, use "change" instead of "onchange".
dropdown.add(new AjaxFormComponentUpdatingBehavior("change") { This works for me on Wicket 8.4.0 Greetings Matthias -----Ursprüngliche Nachricht----- Von: Sibgha Nazir <sibgha...@gmail.com> Gesendet: Montag, 20. Mai 2019 16:14 An: users@wicket.apache.org Betreff: Wicket DropDown Change event Hi, I am not able to trigger the on change event of the drop down in the wicket. In the class DPanel,java, I am simply trying to print on the console when the change event has occured. dropdown.add(*new* AjaxFormComponentUpdatingBehavior("onchange") { /** * */ *private* *static* *final* *long* *serialVersionUID* = -6744838136235652577L; *protected* *void* onUpdate(AjaxRequestTarget target) { System.*out*.println("Changed"); } }); Need Help. Following is my quick start application. https://github.com/Sibgha360/dropdownexample.git Thanks --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org For additional commands, e-mail: users-h...@wicket.apache.org