I am trying to prevent users from creating overlapping events in our calendar. I was able to implement this somewhat successfully using the demo at https://demos.telerik.com/aspnet-ajax/scheduler/examples/limitconcurrentappointments/defaultvb.aspx. I am having an issue though due to the fact that we use a customized Advanced Form template for our events. On insert or update, I can use the ExceedsLimit() function to cancel the insert or update, but the Advanced Form is cleared out and loses all of the information the user has entered. Ideally we would present the user with an error message and allow them to fix the data rather than having to enter it all over from scratch. Is this possible?
I updated the Advanced Insert and Edit Forms demo located at https://demos.telerik.com/aspnet-ajax/scheduler/examples/advancedformtemplate/defaultvb.aspx to demonstrate the issue.