I use gantt chart viewer in my company project.
it's realy perfect but i have some problem with custom provider
i want show a message in UI when something is wrong is customProvider
for example use delete a dependency but in deleteDependency function ,we understand use haven't dependency delete permittion and we throw a exception.
but in UI, dependency line is deleted.
we want show dependency line in UI if delete function return throw exception and show a message to user contain throw message.