Showing "tooltips" for list items in RadComboBox

HOW-TO
Show "tooltips" for list items in RadComboBox.

SOLUTION
There are two ways of doing this:

The first approach is to assign directly the text to be displayed to every ComboBoxItem. This is done through the API or through the design time. You must assign the required text to every item’s ToolTipText.





The second approach is to handle the ToolTipTextNeeded event where custom logic can be applied:


Add an event handler to the event of the popup form to listen for the ToolTipTextNeeded event (inside of it the ListBoxElement lives so the form control is responsible for bubbling the tooltip events). This can be done inside the Load event of the form.

The task is to display tooltip only for the second item inside the combobox control and the code is: