Hello Valentino,
Thank you for writing.
To implement context menus use
RadContextMenu in your application.
RadContextMenu is a non-visual component that sits in the component tray located below the form design surface.
RadContextMenu, like
RadMenu, can be themed and has an items collection that accepts
RadMenuItem,
RadMenuComboBoxItem,
RadMenuSeparatorItem and
RadMenuContextItem. It can be setup at design time as well. Please refer to the attached gif file.
I hope this information helps. Should you have further questions I would be glad to help.
Regards,
Dess
Progress Telerik