The C1Menu control can respond to different trigger events to open a menu item. This topic illustrates how to set the Trigger and TriggerEvent properties to change the trigger that opens the menu items in either the Design View or the Source View.
In Design View
In Source View
In Source View, add TriggerEvent="Rtclick"
and Trigger=".wijmo-wijmenu-item"
to the <cc1:C1Menu>
tags.
Press F5 to run your project. Note that you now need to right-click a menu item to make the submenu drop down.