LostFocusEvent Class
An event that occurs when the control loses focus.
#Declaration
export class LostFocusEvent extends RichEditEvent<EventArgs>
#Remarks
You can define the LostFocus event handler either at the server side, at the client side, or at runtime.
Use the OnLostFocus(String) method to specify the event handler.
@(Html.DevExpress().RichEdit("richEdit")
.OnLostFocus("function(s,e){ /* your custom actions */ }")
// ...
The event handler receives an argument of the EventArgs type.